/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:19:25,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:19:25,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:19:25,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 16:19:25,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 16:19:25,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 16:19:25,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 16:19:25,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 16:19:25,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 16:19:25,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 16:19:25,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 16:19:25,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 16:19:25,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:19:25,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:19:25,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:19:25,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:19:25,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:19:25,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:19:25,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:19:25,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:19:25,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:19:25,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:19:25,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:19:25,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:19:25,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 16:19:25,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 16:19:25,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 16:19:25,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 16:19:25,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 16:19:25,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 16:19:25,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 16:19:25,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 16:19:25,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 16:19:25,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 16:19:25,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 16:19:25,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 16:19:25,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 16:19:25,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 16:19:25,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:19:25,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:19:25,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:19:25,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:19:25,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:19:25,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:19:25,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:19:25,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:19:25,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:19:25,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:19:25,778 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:19:25,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:19:25,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:19:25,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:19:25,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:19:25,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:19:25,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:19:25,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:19:25,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:19:25,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:19:25,781 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:19:25,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:19:25,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:19:25,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:19:25,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:19:25,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:19:25,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:19:25,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:19:25,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:19:25,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:19:25,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:19:25,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:19:25,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:19:25,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:19:25,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:19:25,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:19:25,785 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:19:26,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:19:26,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:19:26,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:19:26,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:19:26,223 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:19:26,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c [2021-10-06 16:19:26,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b8fcb70c/33cf0d99c99d4aecab4d219a7b3d998a/FLAG4c6f8fe10 [2021-10-06 16:19:26,906 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:19:26,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c [2021-10-06 16:19:26,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b8fcb70c/33cf0d99c99d4aecab4d219a7b3d998a/FLAG4c6f8fe10 [2021-10-06 16:19:27,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b8fcb70c/33cf0d99c99d4aecab4d219a7b3d998a [2021-10-06 16:19:27,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:19:27,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:19:27,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:19:27,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:19:27,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:19:27,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9c4b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27, skipping insertion in model container [2021-10-06 16:19:27,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:19:27,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:19:27,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c[2782,2795] [2021-10-06 16:19:27,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:19:27,592 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:19:27,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c[2782,2795] [2021-10-06 16:19:27,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:19:27,639 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:19:27,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27 WrapperNode [2021-10-06 16:19:27,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:19:27,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:19:27,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:19:27,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:19:27,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:19:27,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:19:27,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:19:27,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:19:27,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:19:27,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:19:27,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:19:27,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:19:27,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (1/1) ... [2021-10-06 16:19:27,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:19:27,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:27,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 16:19:27,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 16:19:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:19:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:19:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:19:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:19:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 16:19:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 16:19:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 16:19:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 16:19:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:19:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:19:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:19:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:19:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:19:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:19:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:19:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:19:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:19:27,857 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:19:28,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:19:28,515 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-06 16:19:28,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:19:28 BoogieIcfgContainer [2021-10-06 16:19:28,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:19:28,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:19:28,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:19:28,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:19:28,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:19:27" (1/3) ... [2021-10-06 16:19:28,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db1e412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:19:28, skipping insertion in model container [2021-10-06 16:19:28,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:27" (2/3) ... [2021-10-06 16:19:28,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db1e412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:19:28, skipping insertion in model container [2021-10-06 16:19:28,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:19:28" (3/3) ... [2021-10-06 16:19:28,527 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.c [2021-10-06 16:19:28,533 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:19:28,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:19:28,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-06 16:19:28,534 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:19:28,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,588 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,589 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,589 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,589 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,597 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,597 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,597 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,603 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,603 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,603 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,605 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,605 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,605 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,607 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,611 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,611 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,612 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,612 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,612 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,612 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,613 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,614 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,615 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,615 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,615 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,615 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,618 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,618 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,618 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,622 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,622 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,622 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,622 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,623 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,623 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,627 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,629 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,629 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,629 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,629 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,630 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,630 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,633 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:28,643 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 16:19:28,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:19:28,696 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 16:19:28,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-06 16:19:28,719 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:19:28,733 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 182 transitions, 396 flow [2021-10-06 16:19:28,736 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 182 transitions, 396 flow [2021-10-06 16:19:28,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 182 transitions, 396 flow [2021-10-06 16:19:28,868 INFO L129 PetriNetUnfolder]: 6/178 cut-off events. [2021-10-06 16:19:28,869 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 16:19:28,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 178 events. 6/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 249 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2021-10-06 16:19:28,896 INFO L116 LiptonReduction]: Number of co-enabled transitions 6996 [2021-10-06 16:19:35,258 INFO L131 LiptonReduction]: Checked pairs total: 18853 [2021-10-06 16:19:35,258 INFO L133 LiptonReduction]: Total number of compositions: 154 [2021-10-06 16:19:35,268 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 59 transitions, 150 flow [2021-10-06 16:19:36,895 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26648 states, 26021 states have (on average 4.2198993120940775) internal successors, (109806), 26647 states have internal predecessors, (109806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 26648 states, 26021 states have (on average 4.2198993120940775) internal successors, (109806), 26647 states have internal predecessors, (109806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:19:36,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:36,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:19:36,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash 692941, now seen corresponding path program 1 times [2021-10-06 16:19:36,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:36,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420888596] [2021-10-06 16:19:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:36,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:37,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:37,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420888596] [2021-10-06 16:19:37,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420888596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:37,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:37,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:37,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703332564] [2021-10-06 16:19:37,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:37,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:37,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:37,309 INFO L87 Difference]: Start difference. First operand has 26648 states, 26021 states have (on average 4.2198993120940775) internal successors, (109806), 26647 states have internal predecessors, (109806), 0 states have call successors, (0), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:38,249 INFO L93 Difference]: Finished difference Result 26416 states and 106182 transitions. [2021-10-06 16:19:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-06 16:19:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:38,768 INFO L225 Difference]: With dead ends: 26416 [2021-10-06 16:19:38,769 INFO L226 Difference]: Without dead ends: 26372 [2021-10-06 16:19:38,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26372 states. [2021-10-06 16:19:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26372 to 26372. [2021-10-06 16:19:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26372 states, 25764 states have (on average 4.11411271541686) internal successors, (105996), 26371 states have internal predecessors, (105996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 105996 transitions. [2021-10-06 16:19:41,267 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 105996 transitions. Word has length 3 [2021-10-06 16:19:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:41,275 INFO L470 AbstractCegarLoop]: Abstraction has 26372 states and 105996 transitions. [2021-10-06 16:19:41,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 105996 transitions. [2021-10-06 16:19:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:19:41,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:41,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-06 16:19:41,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:19:41,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash -830760416, now seen corresponding path program 1 times [2021-10-06 16:19:41,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:41,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009452322] [2021-10-06 16:19:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:41,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:41,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:41,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009452322] [2021-10-06 16:19:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009452322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:41,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:41,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:41,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946212951] [2021-10-06 16:19:41,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:41,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:41,432 INFO L87 Difference]: Start difference. First operand 26372 states and 105996 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:42,250 INFO L93 Difference]: Finished difference Result 32036 states and 121305 transitions. [2021-10-06 16:19:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-06 16:19:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:42,653 INFO L225 Difference]: With dead ends: 32036 [2021-10-06 16:19:42,653 INFO L226 Difference]: Without dead ends: 32036 [2021-10-06 16:19:42,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32036 states. [2021-10-06 16:19:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32036 to 26652. [2021-10-06 16:19:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26652 states, 26128 states have (on average 4.0813303735456214) internal successors, (106637), 26651 states have internal predecessors, (106637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26652 states to 26652 states and 106637 transitions. [2021-10-06 16:19:44,650 INFO L78 Accepts]: Start accepts. Automaton has 26652 states and 106637 transitions. Word has length 6 [2021-10-06 16:19:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:44,651 INFO L470 AbstractCegarLoop]: Abstraction has 26652 states and 106637 transitions. [2021-10-06 16:19:44,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 26652 states and 106637 transitions. [2021-10-06 16:19:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:19:44,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:44,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-06 16:19:44,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:19:44,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash -830760415, now seen corresponding path program 1 times [2021-10-06 16:19:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:44,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913801116] [2021-10-06 16:19:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:44,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:44,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:44,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913801116] [2021-10-06 16:19:44,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913801116] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:44,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:44,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:44,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554948570] [2021-10-06 16:19:44,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:44,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:44,712 INFO L87 Difference]: Start difference. First operand 26652 states and 106637 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:45,274 INFO L93 Difference]: Finished difference Result 17346 states and 68746 transitions. [2021-10-06 16:19:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-06 16:19:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:45,480 INFO L225 Difference]: With dead ends: 17346 [2021-10-06 16:19:45,480 INFO L226 Difference]: Without dead ends: 17346 [2021-10-06 16:19:45,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17346 states. [2021-10-06 16:19:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17346 to 17346. [2021-10-06 16:19:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17346 states, 17104 states have (on average 4.019293732460243) internal successors, (68746), 17345 states have internal predecessors, (68746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 68746 transitions. [2021-10-06 16:19:46,491 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 68746 transitions. Word has length 6 [2021-10-06 16:19:46,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:46,491 INFO L470 AbstractCegarLoop]: Abstraction has 17346 states and 68746 transitions. [2021-10-06 16:19:46,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 68746 transitions. [2021-10-06 16:19:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 16:19:46,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:46,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:46,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:19:46,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 13461596, now seen corresponding path program 1 times [2021-10-06 16:19:46,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:46,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459447956] [2021-10-06 16:19:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:46,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:46,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459447956] [2021-10-06 16:19:46,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459447956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:46,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:46,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:46,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601324241] [2021-10-06 16:19:46,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:46,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:46,610 INFO L87 Difference]: Start difference. First operand 17346 states and 68746 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:47,083 INFO L93 Difference]: Finished difference Result 10598 states and 38774 transitions. [2021-10-06 16:19:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:47,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-06 16:19:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:47,148 INFO L225 Difference]: With dead ends: 10598 [2021-10-06 16:19:47,149 INFO L226 Difference]: Without dead ends: 10598 [2021-10-06 16:19:47,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2021-10-06 16:19:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 10598. [2021-10-06 16:19:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10598 states, 10428 states have (on average 3.7182585347142307) internal successors, (38774), 10597 states have internal predecessors, (38774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10598 states to 10598 states and 38774 transitions. [2021-10-06 16:19:47,830 INFO L78 Accepts]: Start accepts. Automaton has 10598 states and 38774 transitions. Word has length 7 [2021-10-06 16:19:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:47,831 INFO L470 AbstractCegarLoop]: Abstraction has 10598 states and 38774 transitions. [2021-10-06 16:19:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10598 states and 38774 transitions. [2021-10-06 16:19:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:47,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:47,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:47,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:19:47,840 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1575825708, now seen corresponding path program 1 times [2021-10-06 16:19:47,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:47,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404513415] [2021-10-06 16:19:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:47,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:47,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:47,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404513415] [2021-10-06 16:19:47,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404513415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:47,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:47,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-06 16:19:47,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699272966] [2021-10-06 16:19:47,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:47,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:47,921 INFO L87 Difference]: Start difference. First operand 10598 states and 38774 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:48,060 INFO L93 Difference]: Finished difference Result 9138 states and 33001 transitions. [2021-10-06 16:19:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:19:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-06 16:19:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:48,124 INFO L225 Difference]: With dead ends: 9138 [2021-10-06 16:19:48,124 INFO L226 Difference]: Without dead ends: 9138 [2021-10-06 16:19:48,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2021-10-06 16:19:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 9138. [2021-10-06 16:19:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9138 states, 8998 states have (on average 3.6675927983996446) internal successors, (33001), 9137 states have internal predecessors, (33001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9138 states to 9138 states and 33001 transitions. [2021-10-06 16:19:48,528 INFO L78 Accepts]: Start accepts. Automaton has 9138 states and 33001 transitions. Word has length 9 [2021-10-06 16:19:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:48,529 INFO L470 AbstractCegarLoop]: Abstraction has 9138 states and 33001 transitions. [2021-10-06 16:19:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9138 states and 33001 transitions. [2021-10-06 16:19:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:19:48,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:48,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:48,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-06 16:19:48,534 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1430418365, now seen corresponding path program 1 times [2021-10-06 16:19:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:48,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679841343] [2021-10-06 16:19:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:48,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:48,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:48,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679841343] [2021-10-06 16:19:48,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679841343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:48,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:48,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-06 16:19:48,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425965987] [2021-10-06 16:19:48,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 16:19:48,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 16:19:48,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:48,598 INFO L87 Difference]: Start difference. First operand 9138 states and 33001 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:48,702 INFO L93 Difference]: Finished difference Result 7112 states and 25426 transitions. [2021-10-06 16:19:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 16:19:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-06 16:19:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:48,738 INFO L225 Difference]: With dead ends: 7112 [2021-10-06 16:19:48,738 INFO L226 Difference]: Without dead ends: 7112 [2021-10-06 16:19:48,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2021-10-06 16:19:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7112. [2021-10-06 16:19:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7112 states, 7048 states have (on average 3.607548240635641) internal successors, (25426), 7111 states have internal predecessors, (25426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 25426 transitions. [2021-10-06 16:19:49,209 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 25426 transitions. Word has length 12 [2021-10-06 16:19:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:49,209 INFO L470 AbstractCegarLoop]: Abstraction has 7112 states and 25426 transitions. [2021-10-06 16:19:49,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 25426 transitions. [2021-10-06 16:19:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:49,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:49,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:49,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-06 16:19:49,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -611407336, now seen corresponding path program 1 times [2021-10-06 16:19:49,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:49,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968991872] [2021-10-06 16:19:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:49,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:49,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:49,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968991872] [2021-10-06 16:19:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968991872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:49,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:49,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:49,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663604487] [2021-10-06 16:19:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:49,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:49,252 INFO L87 Difference]: Start difference. First operand 7112 states and 25426 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:49,335 INFO L93 Difference]: Finished difference Result 6272 states and 21815 transitions. [2021-10-06 16:19:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:49,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-06 16:19:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:49,364 INFO L225 Difference]: With dead ends: 6272 [2021-10-06 16:19:49,365 INFO L226 Difference]: Without dead ends: 6272 [2021-10-06 16:19:49,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-10-06 16:19:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 6184. [2021-10-06 16:19:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6151 states have (on average 3.5319460250365795) internal successors, (21725), 6183 states have internal predecessors, (21725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21725 transitions. [2021-10-06 16:19:49,565 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21725 transitions. Word has length 14 [2021-10-06 16:19:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:49,565 INFO L470 AbstractCegarLoop]: Abstraction has 6184 states and 21725 transitions. [2021-10-06 16:19:49,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21725 transitions. [2021-10-06 16:19:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:49,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:49,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:49,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-06 16:19:49,569 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -611407379, now seen corresponding path program 1 times [2021-10-06 16:19:49,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:49,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288612651] [2021-10-06 16:19:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:49,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:49,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:49,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288612651] [2021-10-06 16:19:49,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288612651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:49,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:49,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-06 16:19:49,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135103256] [2021-10-06 16:19:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:49,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:49,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:49,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:49,625 INFO L87 Difference]: Start difference. First operand 6184 states and 21725 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:49,870 INFO L93 Difference]: Finished difference Result 6686 states and 22469 transitions. [2021-10-06 16:19:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 16:19:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-06 16:19:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:49,893 INFO L225 Difference]: With dead ends: 6686 [2021-10-06 16:19:49,893 INFO L226 Difference]: Without dead ends: 6612 [2021-10-06 16:19:49,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6612 states. [2021-10-06 16:19:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6612 to 6470. [2021-10-06 16:19:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6444 states have (on average 3.4323401613904405) internal successors, (22118), 6469 states have internal predecessors, (22118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 22118 transitions. [2021-10-06 16:19:50,105 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 22118 transitions. Word has length 14 [2021-10-06 16:19:50,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:50,105 INFO L470 AbstractCegarLoop]: Abstraction has 6470 states and 22118 transitions. [2021-10-06 16:19:50,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 22118 transitions. [2021-10-06 16:19:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:50,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:50,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:50,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-06 16:19:50,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash -551177938, now seen corresponding path program 1 times [2021-10-06 16:19:50,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:50,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416274277] [2021-10-06 16:19:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:50,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:50,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:50,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416274277] [2021-10-06 16:19:50,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416274277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:50,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:50,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-06 16:19:50,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957171407] [2021-10-06 16:19:50,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:50,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:50,157 INFO L87 Difference]: Start difference. First operand 6470 states and 22118 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:50,293 INFO L93 Difference]: Finished difference Result 7102 states and 23591 transitions. [2021-10-06 16:19:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 16:19:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-06 16:19:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:50,314 INFO L225 Difference]: With dead ends: 7102 [2021-10-06 16:19:50,314 INFO L226 Difference]: Without dead ends: 6982 [2021-10-06 16:19:50,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2021-10-06 16:19:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6718. [2021-10-06 16:19:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6693 states have (on average 3.3932466756312567) internal successors, (22711), 6717 states have internal predecessors, (22711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 22711 transitions. [2021-10-06 16:19:50,526 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 22711 transitions. Word has length 14 [2021-10-06 16:19:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:50,526 INFO L470 AbstractCegarLoop]: Abstraction has 6718 states and 22711 transitions. [2021-10-06 16:19:50,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 22711 transitions. [2021-10-06 16:19:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:19:50,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:50,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:50,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-06 16:19:50,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1789423903, now seen corresponding path program 1 times [2021-10-06 16:19:50,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:50,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436820761] [2021-10-06 16:19:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:50,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:50,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:50,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436820761] [2021-10-06 16:19:50,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436820761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:50,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:50,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-06 16:19:50,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099298686] [2021-10-06 16:19:50,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 16:19:50,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 16:19:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:50,659 INFO L87 Difference]: Start difference. First operand 6718 states and 22711 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:50,856 INFO L93 Difference]: Finished difference Result 7294 states and 24031 transitions. [2021-10-06 16:19:50,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 16:19:50,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-06 16:19:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:50,879 INFO L225 Difference]: With dead ends: 7294 [2021-10-06 16:19:50,879 INFO L226 Difference]: Without dead ends: 7088 [2021-10-06 16:19:50,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2021-10-06 16:19:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 6820. [2021-10-06 16:19:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6820 states, 6796 states have (on average 3.368452030606239) internal successors, (22892), 6819 states have internal predecessors, (22892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6820 states to 6820 states and 22892 transitions. [2021-10-06 16:19:51,065 INFO L78 Accepts]: Start accepts. Automaton has 6820 states and 22892 transitions. Word has length 15 [2021-10-06 16:19:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:51,065 INFO L470 AbstractCegarLoop]: Abstraction has 6820 states and 22892 transitions. [2021-10-06 16:19:51,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6820 states and 22892 transitions. [2021-10-06 16:19:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 16:19:51,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:51,073 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:51,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-06 16:19:51,074 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -45381296, now seen corresponding path program 1 times [2021-10-06 16:19:51,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:51,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241125445] [2021-10-06 16:19:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:51,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:51,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:51,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241125445] [2021-10-06 16:19:51,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241125445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:51,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:51,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-06 16:19:51,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137913308] [2021-10-06 16:19:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:51,110 INFO L87 Difference]: Start difference. First operand 6820 states and 22892 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:51,200 INFO L93 Difference]: Finished difference Result 6308 states and 21442 transitions. [2021-10-06 16:19:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-06 16:19:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:51,225 INFO L225 Difference]: With dead ends: 6308 [2021-10-06 16:19:51,225 INFO L226 Difference]: Without dead ends: 6308 [2021-10-06 16:19:51,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-10-06 16:19:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5978. [2021-10-06 16:19:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5967 states have (on average 3.4561756326462207) internal successors, (20623), 5977 states have internal predecessors, (20623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 20623 transitions. [2021-10-06 16:19:51,408 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 20623 transitions. Word has length 17 [2021-10-06 16:19:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:51,409 INFO L470 AbstractCegarLoop]: Abstraction has 5978 states and 20623 transitions. [2021-10-06 16:19:51,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 20623 transitions. [2021-10-06 16:19:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 16:19:51,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:51,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:51,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-06 16:19:51,457 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash -45381339, now seen corresponding path program 1 times [2021-10-06 16:19:51,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:51,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863676790] [2021-10-06 16:19:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:51,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:51,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:51,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863676790] [2021-10-06 16:19:51,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863676790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:51,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:51,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:51,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073656256] [2021-10-06 16:19:51,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:51,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:51,589 INFO L87 Difference]: Start difference. First operand 5978 states and 20623 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:51,827 INFO L93 Difference]: Finished difference Result 7840 states and 27889 transitions. [2021-10-06 16:19:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:19:51,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-06 16:19:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:51,861 INFO L225 Difference]: With dead ends: 7840 [2021-10-06 16:19:51,861 INFO L226 Difference]: Without dead ends: 7528 [2021-10-06 16:19:51,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2021-10-06 16:19:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 5864. [2021-10-06 16:19:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5854 states have (on average 3.45097369320123) internal successors, (20202), 5863 states have internal predecessors, (20202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 20202 transitions. [2021-10-06 16:19:52,021 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 20202 transitions. Word has length 17 [2021-10-06 16:19:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:52,022 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 20202 transitions. [2021-10-06 16:19:52,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 20202 transitions. [2021-10-06 16:19:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:52,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:52,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:52,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-06 16:19:52,034 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -866164775, now seen corresponding path program 1 times [2021-10-06 16:19:52,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:52,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870275379] [2021-10-06 16:19:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:52,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:52,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:52,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870275379] [2021-10-06 16:19:52,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870275379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:52,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:52,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:52,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984692373] [2021-10-06 16:19:52,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:52,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:52,094 INFO L87 Difference]: Start difference. First operand 5864 states and 20202 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:52,308 INFO L93 Difference]: Finished difference Result 6766 states and 22360 transitions. [2021-10-06 16:19:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:52,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:52,329 INFO L225 Difference]: With dead ends: 6766 [2021-10-06 16:19:52,330 INFO L226 Difference]: Without dead ends: 6556 [2021-10-06 16:19:52,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2021-10-06 16:19:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 5858. [2021-10-06 16:19:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5848 states have (on average 3.419630642954856) internal successors, (19998), 5857 states have internal predecessors, (19998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 19998 transitions. [2021-10-06 16:19:52,595 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 19998 transitions. Word has length 21 [2021-10-06 16:19:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:52,595 INFO L470 AbstractCegarLoop]: Abstraction has 5858 states and 19998 transitions. [2021-10-06 16:19:52,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 19998 transitions. [2021-10-06 16:19:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:52,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:52,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:52,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-06 16:19:52,607 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash -720203576, now seen corresponding path program 1 times [2021-10-06 16:19:52,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:52,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134342555] [2021-10-06 16:19:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:52,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:52,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:52,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134342555] [2021-10-06 16:19:52,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134342555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:52,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:52,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:52,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249937178] [2021-10-06 16:19:52,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:52,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:52,674 INFO L87 Difference]: Start difference. First operand 5858 states and 19998 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:52,902 INFO L93 Difference]: Finished difference Result 6548 states and 21602 transitions. [2021-10-06 16:19:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:52,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:52,919 INFO L225 Difference]: With dead ends: 6548 [2021-10-06 16:19:52,919 INFO L226 Difference]: Without dead ends: 6282 [2021-10-06 16:19:52,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-10-06 16:19:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5778. [2021-10-06 16:19:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 5768 states have (on average 3.397711511789182) internal successors, (19598), 5777 states have internal predecessors, (19598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 19598 transitions. [2021-10-06 16:19:53,043 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 19598 transitions. Word has length 21 [2021-10-06 16:19:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:53,043 INFO L470 AbstractCegarLoop]: Abstraction has 5778 states and 19598 transitions. [2021-10-06 16:19:53,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 19598 transitions. [2021-10-06 16:19:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:53,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:53,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:53,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-06 16:19:53,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:53,055 INFO L82 PathProgramCache]: Analyzing trace with hash 157364433, now seen corresponding path program 2 times [2021-10-06 16:19:53,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:53,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450874358] [2021-10-06 16:19:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:53,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:53,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:53,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450874358] [2021-10-06 16:19:53,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450874358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:53,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:53,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:53,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793517825] [2021-10-06 16:19:53,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:53,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:53,113 INFO L87 Difference]: Start difference. First operand 5778 states and 19598 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:53,338 INFO L93 Difference]: Finished difference Result 6378 states and 21015 transitions. [2021-10-06 16:19:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:53,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:53,362 INFO L225 Difference]: With dead ends: 6378 [2021-10-06 16:19:53,362 INFO L226 Difference]: Without dead ends: 6216 [2021-10-06 16:19:53,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2021-10-06 16:19:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 5558. [2021-10-06 16:19:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5549 states have (on average 3.418093350153181) internal successors, (18967), 5557 states have internal predecessors, (18967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 18967 transitions. [2021-10-06 16:19:53,684 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 18967 transitions. Word has length 21 [2021-10-06 16:19:53,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:53,689 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 18967 transitions. [2021-10-06 16:19:53,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 18967 transitions. [2021-10-06 16:19:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:53,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:53,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:53,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-06 16:19:53,704 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash 321289601, now seen corresponding path program 1 times [2021-10-06 16:19:53,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:53,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364389899] [2021-10-06 16:19:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:53,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:53,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:53,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364389899] [2021-10-06 16:19:53,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364389899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:53,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:53,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:53,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763682] [2021-10-06 16:19:53,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:53,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:53,813 INFO L87 Difference]: Start difference. First operand 5558 states and 18967 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:53,993 INFO L93 Difference]: Finished difference Result 6354 states and 20990 transitions. [2021-10-06 16:19:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:53,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:54,011 INFO L225 Difference]: With dead ends: 6354 [2021-10-06 16:19:54,012 INFO L226 Difference]: Without dead ends: 6158 [2021-10-06 16:19:54,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2021-10-06 16:19:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 5512. [2021-10-06 16:19:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5503 states have (on average 3.413956023986916) internal successors, (18787), 5511 states have internal predecessors, (18787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 18787 transitions. [2021-10-06 16:19:54,155 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 18787 transitions. Word has length 21 [2021-10-06 16:19:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:54,156 INFO L470 AbstractCegarLoop]: Abstraction has 5512 states and 18787 transitions. [2021-10-06 16:19:54,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 18787 transitions. [2021-10-06 16:19:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:54,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:54,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:54,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-06 16:19:54,166 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1143978816, now seen corresponding path program 2 times [2021-10-06 16:19:54,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:54,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338948380] [2021-10-06 16:19:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:54,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:54,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:54,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338948380] [2021-10-06 16:19:54,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338948380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:54,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:54,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:54,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68155480] [2021-10-06 16:19:54,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:54,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:54,240 INFO L87 Difference]: Start difference. First operand 5512 states and 18787 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:54,454 INFO L93 Difference]: Finished difference Result 6216 states and 20520 transitions. [2021-10-06 16:19:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:54,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:54,480 INFO L225 Difference]: With dead ends: 6216 [2021-10-06 16:19:54,480 INFO L226 Difference]: Without dead ends: 6078 [2021-10-06 16:19:54,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2021-10-06 16:19:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 5380. [2021-10-06 16:19:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5372 states have (on average 3.4337304542069993) internal successors, (18446), 5379 states have internal predecessors, (18446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18446 transitions. [2021-10-06 16:19:54,855 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18446 transitions. Word has length 21 [2021-10-06 16:19:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:54,856 INFO L470 AbstractCegarLoop]: Abstraction has 5380 states and 18446 transitions. [2021-10-06 16:19:54,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18446 transitions. [2021-10-06 16:19:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:19:54,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:54,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:54,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-06 16:19:54,875 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1143960127, now seen corresponding path program 2 times [2021-10-06 16:19:54,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:54,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762584679] [2021-10-06 16:19:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:54,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:54,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:54,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762584679] [2021-10-06 16:19:54,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762584679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:54,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:54,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:54,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501914337] [2021-10-06 16:19:54,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:54,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:54,983 INFO L87 Difference]: Start difference. First operand 5380 states and 18446 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:55,161 INFO L93 Difference]: Finished difference Result 5970 states and 19892 transitions. [2021-10-06 16:19:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-06 16:19:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:55,182 INFO L225 Difference]: With dead ends: 5970 [2021-10-06 16:19:55,183 INFO L226 Difference]: Without dead ends: 5790 [2021-10-06 16:19:55,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-10-06 16:19:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5266. [2021-10-06 16:19:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5259 states have (on average 3.453888571971858) internal successors, (18164), 5265 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 18164 transitions. [2021-10-06 16:19:55,321 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 18164 transitions. Word has length 21 [2021-10-06 16:19:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:55,321 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 18164 transitions. [2021-10-06 16:19:55,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 18164 transitions. [2021-10-06 16:19:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:19:55,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:55,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:55,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-06 16:19:55,334 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:55,335 INFO L82 PathProgramCache]: Analyzing trace with hash -353006053, now seen corresponding path program 1 times [2021-10-06 16:19:55,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:55,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924621489] [2021-10-06 16:19:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:55,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:55,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924621489] [2021-10-06 16:19:55,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924621489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:55,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:55,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-06 16:19:55,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62535739] [2021-10-06 16:19:55,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 16:19:55,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 16:19:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:55,420 INFO L87 Difference]: Start difference. First operand 5266 states and 18164 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:55,669 INFO L93 Difference]: Finished difference Result 5768 states and 19318 transitions. [2021-10-06 16:19:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:19:55,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-06 16:19:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:55,684 INFO L225 Difference]: With dead ends: 5768 [2021-10-06 16:19:55,684 INFO L226 Difference]: Without dead ends: 5474 [2021-10-06 16:19:55,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:19:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2021-10-06 16:19:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 5208. [2021-10-06 16:19:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5201 states have (on average 3.423380119207845) internal successors, (17805), 5207 states have internal predecessors, (17805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 17805 transitions. [2021-10-06 16:19:55,785 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 17805 transitions. Word has length 22 [2021-10-06 16:19:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:55,786 INFO L470 AbstractCegarLoop]: Abstraction has 5208 states and 17805 transitions. [2021-10-06 16:19:55,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 17805 transitions. [2021-10-06 16:19:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:19:55,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:55,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:55,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-06 16:19:55,799 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1469454844, now seen corresponding path program 1 times [2021-10-06 16:19:55,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:55,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287384255] [2021-10-06 16:19:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:55,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:55,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287384255] [2021-10-06 16:19:55,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287384255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:55,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:55,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-06 16:19:55,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947201793] [2021-10-06 16:19:55,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 16:19:55,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 16:19:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:55,883 INFO L87 Difference]: Start difference. First operand 5208 states and 17805 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:56,246 INFO L93 Difference]: Finished difference Result 5642 states and 18828 transitions. [2021-10-06 16:19:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:19:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-06 16:19:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:56,262 INFO L225 Difference]: With dead ends: 5642 [2021-10-06 16:19:56,262 INFO L226 Difference]: Without dead ends: 5256 [2021-10-06 16:19:56,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:19:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2021-10-06 16:19:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4950. [2021-10-06 16:19:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4943 states have (on average 3.4064333400768763) internal successors, (16838), 4949 states have internal predecessors, (16838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 16838 transitions. [2021-10-06 16:19:56,366 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 16838 transitions. Word has length 22 [2021-10-06 16:19:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:56,366 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 16838 transitions. [2021-10-06 16:19:56,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 16838 transitions. [2021-10-06 16:19:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:19:56,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:56,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:56,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-06 16:19:56,375 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:56,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2143037908, now seen corresponding path program 2 times [2021-10-06 16:19:56,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:56,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490545388] [2021-10-06 16:19:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:56,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:56,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:56,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490545388] [2021-10-06 16:19:56,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490545388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:56,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:56,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:56,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113331977] [2021-10-06 16:19:56,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:56,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:56,471 INFO L87 Difference]: Start difference. First operand 4950 states and 16838 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:56,852 INFO L93 Difference]: Finished difference Result 6672 states and 23537 transitions. [2021-10-06 16:19:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 16:19:56,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-06 16:19:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:56,874 INFO L225 Difference]: With dead ends: 6672 [2021-10-06 16:19:56,874 INFO L226 Difference]: Without dead ends: 6558 [2021-10-06 16:19:56,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:19:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2021-10-06 16:19:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 4878. [2021-10-06 16:19:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4872 states have (on average 3.4133825944170773) internal successors, (16630), 4877 states have internal predecessors, (16630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 16630 transitions. [2021-10-06 16:19:56,985 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 16630 transitions. Word has length 22 [2021-10-06 16:19:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:56,985 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 16630 transitions. [2021-10-06 16:19:56,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 16630 transitions. [2021-10-06 16:19:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:19:56,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:56,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:56,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-06 16:19:56,997 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:56,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2143056067, now seen corresponding path program 2 times [2021-10-06 16:19:56,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:56,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040609669] [2021-10-06 16:19:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:56,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:57,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:57,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040609669] [2021-10-06 16:19:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040609669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:57,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636864665] [2021-10-06 16:19:57,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:57,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:57,091 INFO L87 Difference]: Start difference. First operand 4878 states and 16630 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:57,517 INFO L93 Difference]: Finished difference Result 6488 states and 23030 transitions. [2021-10-06 16:19:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 16:19:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-06 16:19:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:57,536 INFO L225 Difference]: With dead ends: 6488 [2021-10-06 16:19:57,537 INFO L226 Difference]: Without dead ends: 6150 [2021-10-06 16:19:57,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:19:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-10-06 16:19:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 4624. [2021-10-06 16:19:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4619 states have (on average 3.4264992422602294) internal successors, (15827), 4623 states have internal predecessors, (15827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 15827 transitions. [2021-10-06 16:19:57,648 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 15827 transitions. Word has length 22 [2021-10-06 16:19:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:57,648 INFO L470 AbstractCegarLoop]: Abstraction has 4624 states and 15827 transitions. [2021-10-06 16:19:57,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 15827 transitions. [2021-10-06 16:19:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 16:19:57,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:57,658 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:57,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-06 16:19:57,658 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:57,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1974231694, now seen corresponding path program 1 times [2021-10-06 16:19:57,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:57,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376776644] [2021-10-06 16:19:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:57,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:57,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:57,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376776644] [2021-10-06 16:19:57,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376776644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:57,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:57,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-06 16:19:57,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968501895] [2021-10-06 16:19:57,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:57,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:57,714 INFO L87 Difference]: Start difference. First operand 4624 states and 15827 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:57,850 INFO L93 Difference]: Finished difference Result 4888 states and 16433 transitions. [2021-10-06 16:19:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:19:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-10-06 16:19:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:57,866 INFO L225 Difference]: With dead ends: 4888 [2021-10-06 16:19:57,866 INFO L226 Difference]: Without dead ends: 4216 [2021-10-06 16:19:57,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:19:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2021-10-06 16:19:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4200. [2021-10-06 16:19:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 4195 states have (on average 3.430989272943981) internal successors, (14393), 4199 states have internal predecessors, (14393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 14393 transitions. [2021-10-06 16:19:57,992 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 14393 transitions. Word has length 23 [2021-10-06 16:19:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:57,992 INFO L470 AbstractCegarLoop]: Abstraction has 4200 states and 14393 transitions. [2021-10-06 16:19:57,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 14393 transitions. [2021-10-06 16:19:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 16:19:58,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:58,005 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:58,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-06 16:19:58,007 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash -677630458, now seen corresponding path program 2 times [2021-10-06 16:19:58,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:58,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798005443] [2021-10-06 16:19:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:58,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:58,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:58,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798005443] [2021-10-06 16:19:58,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798005443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:58,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:58,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:58,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462245974] [2021-10-06 16:19:58,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:58,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:58,085 INFO L87 Difference]: Start difference. First operand 4200 states and 14393 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:58,325 INFO L93 Difference]: Finished difference Result 5558 states and 19879 transitions. [2021-10-06 16:19:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 16:19:58,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-10-06 16:19:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:58,347 INFO L225 Difference]: With dead ends: 5558 [2021-10-06 16:19:58,347 INFO L226 Difference]: Without dead ends: 5054 [2021-10-06 16:19:58,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:19:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2021-10-06 16:19:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 3692. [2021-10-06 16:19:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3688 states have (on average 3.4674620390455533) internal successors, (12788), 3691 states have internal predecessors, (12788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 12788 transitions. [2021-10-06 16:19:58,481 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 12788 transitions. Word has length 23 [2021-10-06 16:19:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:58,481 INFO L470 AbstractCegarLoop]: Abstraction has 3692 states and 12788 transitions. [2021-10-06 16:19:58,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 12788 transitions. [2021-10-06 16:19:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:19:58,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:58,494 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:58,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-06 16:19:58,494 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:58,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1391319654, now seen corresponding path program 1 times [2021-10-06 16:19:58,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:58,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963217727] [2021-10-06 16:19:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:58,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:58,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:58,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963217727] [2021-10-06 16:19:58,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963217727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:58,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:58,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:58,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439013054] [2021-10-06 16:19:58,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:58,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:58,608 INFO L87 Difference]: Start difference. First operand 3692 states and 12788 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:58,776 INFO L93 Difference]: Finished difference Result 4058 states and 13701 transitions. [2021-10-06 16:19:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:19:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:58,792 INFO L225 Difference]: With dead ends: 4058 [2021-10-06 16:19:58,792 INFO L226 Difference]: Without dead ends: 3998 [2021-10-06 16:19:58,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:19:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-10-06 16:19:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3798. [2021-10-06 16:19:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3798 states, 3794 states have (on average 3.44016868740116) internal successors, (13052), 3797 states have internal predecessors, (13052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 13052 transitions. [2021-10-06 16:19:58,929 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 13052 transitions. Word has length 28 [2021-10-06 16:19:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:58,929 INFO L470 AbstractCegarLoop]: Abstraction has 3798 states and 13052 transitions. [2021-10-06 16:19:58,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 13052 transitions. [2021-10-06 16:19:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:19:58,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:58,942 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-06 16:19:58,943 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1386140078, now seen corresponding path program 1 times [2021-10-06 16:19:58,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:58,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717867220] [2021-10-06 16:19:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:58,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:59,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:59,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717867220] [2021-10-06 16:19:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717867220] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:59,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:59,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:59,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100623430] [2021-10-06 16:19:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:59,075 INFO L87 Difference]: Start difference. First operand 3798 states and 13052 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:59,257 INFO L93 Difference]: Finished difference Result 4000 states and 13549 transitions. [2021-10-06 16:19:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:19:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:19:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:59,275 INFO L225 Difference]: With dead ends: 4000 [2021-10-06 16:19:59,275 INFO L226 Difference]: Without dead ends: 3772 [2021-10-06 16:19:59,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:19:59,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2021-10-06 16:19:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3618. [2021-10-06 16:19:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3614 states have (on average 3.4532374100719423) internal successors, (12480), 3617 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12480 transitions. [2021-10-06 16:19:59,415 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12480 transitions. Word has length 28 [2021-10-06 16:19:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:59,415 INFO L470 AbstractCegarLoop]: Abstraction has 3618 states and 12480 transitions. [2021-10-06 16:19:59,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12480 transitions. [2021-10-06 16:19:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:19:59,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:59,430 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:59,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-06 16:19:59,431 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:59,431 INFO L82 PathProgramCache]: Analyzing trace with hash 430579034, now seen corresponding path program 2 times [2021-10-06 16:19:59,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:59,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873418426] [2021-10-06 16:19:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:59,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:59,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:59,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873418426] [2021-10-06 16:19:59,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873418426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:59,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:59,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:59,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038619609] [2021-10-06 16:19:59,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:59,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:59,541 INFO L87 Difference]: Start difference. First operand 3618 states and 12480 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:59,697 INFO L93 Difference]: Finished difference Result 3828 states and 12975 transitions. [2021-10-06 16:19:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:19:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:19:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:59,711 INFO L225 Difference]: With dead ends: 3828 [2021-10-06 16:19:59,711 INFO L226 Difference]: Without dead ends: 3776 [2021-10-06 16:19:59,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:19:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-10-06 16:19:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3690. [2021-10-06 16:19:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3686 states have (on average 3.4329896907216493) internal successors, (12654), 3689 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 12654 transitions. [2021-10-06 16:19:59,813 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 12654 transitions. Word has length 28 [2021-10-06 16:19:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:59,814 INFO L470 AbstractCegarLoop]: Abstraction has 3690 states and 12654 transitions. [2021-10-06 16:19:59,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 12654 transitions. [2021-10-06 16:19:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:19:59,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:59,830 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:19:59,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-06 16:19:59,830 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:59,830 INFO L82 PathProgramCache]: Analyzing trace with hash 436320819, now seen corresponding path program 1 times [2021-10-06 16:19:59,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:59,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674677098] [2021-10-06 16:19:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:59,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:59,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:59,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674677098] [2021-10-06 16:19:59,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674677098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:59,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:59,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:19:59,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244187708] [2021-10-06 16:19:59,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:59,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:59,954 INFO L87 Difference]: Start difference. First operand 3690 states and 12654 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,113 INFO L93 Difference]: Finished difference Result 3876 states and 13115 transitions. [2021-10-06 16:20:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:00,123 INFO L225 Difference]: With dead ends: 3876 [2021-10-06 16:20:00,123 INFO L226 Difference]: Without dead ends: 3700 [2021-10-06 16:20:00,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2021-10-06 16:20:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3546. [2021-10-06 16:20:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3542 states have (on average 3.4381705251270467) internal successors, (12178), 3545 states have internal predecessors, (12178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 12178 transitions. [2021-10-06 16:20:00,194 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 12178 transitions. Word has length 28 [2021-10-06 16:20:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:00,194 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 12178 transitions. [2021-10-06 16:20:00,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 12178 transitions. [2021-10-06 16:20:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:00,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:00,202 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:00,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-06 16:20:00,202 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1118795363, now seen corresponding path program 2 times [2021-10-06 16:20:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:00,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617936527] [2021-10-06 16:20:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:00,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:00,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617936527] [2021-10-06 16:20:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617936527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:00,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:00,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:00,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514734273] [2021-10-06 16:20:00,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:00,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:00,270 INFO L87 Difference]: Start difference. First operand 3546 states and 12178 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,424 INFO L93 Difference]: Finished difference Result 3716 states and 12599 transitions. [2021-10-06 16:20:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:00,435 INFO L225 Difference]: With dead ends: 3716 [2021-10-06 16:20:00,435 INFO L226 Difference]: Without dead ends: 3684 [2021-10-06 16:20:00,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-10-06 16:20:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3610. [2021-10-06 16:20:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3606 states have (on average 3.4215196894065447) internal successors, (12338), 3609 states have internal predecessors, (12338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12338 transitions. [2021-10-06 16:20:00,505 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12338 transitions. Word has length 28 [2021-10-06 16:20:00,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:00,506 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 12338 transitions. [2021-10-06 16:20:00,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12338 transitions. [2021-10-06 16:20:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:00,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:00,513 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:00,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-06 16:20:00,513 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:00,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1118777204, now seen corresponding path program 2 times [2021-10-06 16:20:00,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:00,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588291628] [2021-10-06 16:20:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:00,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:00,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588291628] [2021-10-06 16:20:00,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588291628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:00,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:00,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:00,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847288933] [2021-10-06 16:20:00,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:00,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:00,581 INFO L87 Difference]: Start difference. First operand 3610 states and 12338 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,721 INFO L93 Difference]: Finished difference Result 3708 states and 12557 transitions. [2021-10-06 16:20:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:00,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:00,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:00,729 INFO L225 Difference]: With dead ends: 3708 [2021-10-06 16:20:00,729 INFO L226 Difference]: Without dead ends: 3072 [2021-10-06 16:20:00,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-10-06 16:20:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3014. [2021-10-06 16:20:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3010 states have (on average 3.4066445182724254) internal successors, (10254), 3013 states have internal predecessors, (10254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10254 transitions. [2021-10-06 16:20:00,792 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10254 transitions. Word has length 28 [2021-10-06 16:20:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:00,792 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 10254 transitions. [2021-10-06 16:20:00,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10254 transitions. [2021-10-06 16:20:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:00,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:00,798 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:00,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-06 16:20:00,799 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:00,799 INFO L82 PathProgramCache]: Analyzing trace with hash 597915490, now seen corresponding path program 3 times [2021-10-06 16:20:00,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:00,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695074246] [2021-10-06 16:20:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:00,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:00,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695074246] [2021-10-06 16:20:00,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695074246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:00,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:00,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:00,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118443890] [2021-10-06 16:20:00,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:00,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:00,876 INFO L87 Difference]: Start difference. First operand 3014 states and 10254 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:01,010 INFO L93 Difference]: Finished difference Result 3118 states and 10473 transitions. [2021-10-06 16:20:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:01,019 INFO L225 Difference]: With dead ends: 3118 [2021-10-06 16:20:01,019 INFO L226 Difference]: Without dead ends: 3058 [2021-10-06 16:20:01,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-10-06 16:20:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2988. [2021-10-06 16:20:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2984 states have (on average 3.405495978552279) internal successors, (10162), 2987 states have internal predecessors, (10162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 10162 transitions. [2021-10-06 16:20:01,093 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 10162 transitions. Word has length 28 [2021-10-06 16:20:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:01,093 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 10162 transitions. [2021-10-06 16:20:01,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 10162 transitions. [2021-10-06 16:20:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:01,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:01,099 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:01,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-06 16:20:01,100 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash 603095066, now seen corresponding path program 3 times [2021-10-06 16:20:01,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:01,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740660] [2021-10-06 16:20:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:01,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:01,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740660] [2021-10-06 16:20:01,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:01,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:01,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:01,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881274077] [2021-10-06 16:20:01,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:01,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:01,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:01,180 INFO L87 Difference]: Start difference. First operand 2988 states and 10162 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:01,328 INFO L93 Difference]: Finished difference Result 3070 states and 10341 transitions. [2021-10-06 16:20:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:01,340 INFO L225 Difference]: With dead ends: 3070 [2021-10-06 16:20:01,341 INFO L226 Difference]: Without dead ends: 2874 [2021-10-06 16:20:01,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-10-06 16:20:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2816. [2021-10-06 16:20:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2812 states have (on average 3.4395448079658606) internal successors, (9672), 2815 states have internal predecessors, (9672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 9672 transitions. [2021-10-06 16:20:01,416 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 9672 transitions. Word has length 28 [2021-10-06 16:20:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:01,417 INFO L470 AbstractCegarLoop]: Abstraction has 2816 states and 9672 transitions. [2021-10-06 16:20:01,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 9672 transitions. [2021-10-06 16:20:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:01,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:01,424 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:01,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-06 16:20:01,424 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash 713042338, now seen corresponding path program 4 times [2021-10-06 16:20:01,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:01,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10136726] [2021-10-06 16:20:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:01,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:01,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10136726] [2021-10-06 16:20:01,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10136726] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:01,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:01,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:01,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99223079] [2021-10-06 16:20:01,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:01,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:01,511 INFO L87 Difference]: Start difference. First operand 2816 states and 9672 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:01,640 INFO L93 Difference]: Finished difference Result 2920 states and 9891 transitions. [2021-10-06 16:20:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:01,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:01,651 INFO L225 Difference]: With dead ends: 2920 [2021-10-06 16:20:01,651 INFO L226 Difference]: Without dead ends: 2876 [2021-10-06 16:20:01,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2021-10-06 16:20:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2866. [2021-10-06 16:20:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2862 states have (on average 3.4178895877009086) internal successors, (9782), 2865 states have internal predecessors, (9782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 9782 transitions. [2021-10-06 16:20:01,722 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 9782 transitions. Word has length 28 [2021-10-06 16:20:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:01,722 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 9782 transitions. [2021-10-06 16:20:01,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 9782 transitions. [2021-10-06 16:20:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:01,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:01,730 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:01,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-06 16:20:01,730 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:01,730 INFO L82 PathProgramCache]: Analyzing trace with hash 719363602, now seen corresponding path program 1 times [2021-10-06 16:20:01,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:01,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004968292] [2021-10-06 16:20:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:01,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:01,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004968292] [2021-10-06 16:20:01,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004968292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:01,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:01,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530341677] [2021-10-06 16:20:01,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:01,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:01,809 INFO L87 Difference]: Start difference. First operand 2866 states and 9782 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:01,963 INFO L93 Difference]: Finished difference Result 3002 states and 10100 transitions. [2021-10-06 16:20:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:01,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:01,972 INFO L225 Difference]: With dead ends: 3002 [2021-10-06 16:20:01,972 INFO L226 Difference]: Without dead ends: 2882 [2021-10-06 16:20:01,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-10-06 16:20:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2766. [2021-10-06 16:20:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2762 states have (on average 3.429398986241854) internal successors, (9472), 2765 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 9472 transitions. [2021-10-06 16:20:02,044 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 9472 transitions. Word has length 28 [2021-10-06 16:20:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:02,044 INFO L470 AbstractCegarLoop]: Abstraction has 2766 states and 9472 transitions. [2021-10-06 16:20:02,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 9472 transitions. [2021-10-06 16:20:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:02,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:02,050 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:02,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-06 16:20:02,050 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:02,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1401838146, now seen corresponding path program 2 times [2021-10-06 16:20:02,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:02,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287077850] [2021-10-06 16:20:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:02,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:02,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287077850] [2021-10-06 16:20:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287077850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:02,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:02,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:02,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955203443] [2021-10-06 16:20:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:02,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:02,134 INFO L87 Difference]: Start difference. First operand 2766 states and 9472 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:02,284 INFO L93 Difference]: Finished difference Result 2892 states and 9767 transitions. [2021-10-06 16:20:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:02,295 INFO L225 Difference]: With dead ends: 2892 [2021-10-06 16:20:02,295 INFO L226 Difference]: Without dead ends: 2872 [2021-10-06 16:20:02,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2021-10-06 16:20:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2806. [2021-10-06 16:20:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2802 states have (on average 3.4125624553890077) internal successors, (9562), 2805 states have internal predecessors, (9562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 9562 transitions. [2021-10-06 16:20:02,368 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 9562 transitions. Word has length 28 [2021-10-06 16:20:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:02,368 INFO L470 AbstractCegarLoop]: Abstraction has 2806 states and 9562 transitions. [2021-10-06 16:20:02,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 9562 transitions. [2021-10-06 16:20:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:02,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:02,375 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:02,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-06 16:20:02,375 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:02,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1401801298, now seen corresponding path program 4 times [2021-10-06 16:20:02,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:02,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586993697] [2021-10-06 16:20:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:02,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:02,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:02,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586993697] [2021-10-06 16:20:02,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586993697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:02,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:02,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:02,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168351640] [2021-10-06 16:20:02,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:02,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:02,452 INFO L87 Difference]: Start difference. First operand 2806 states and 9562 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:02,589 INFO L93 Difference]: Finished difference Result 2838 states and 9618 transitions. [2021-10-06 16:20:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:02,598 INFO L225 Difference]: With dead ends: 2838 [2021-10-06 16:20:02,598 INFO L226 Difference]: Without dead ends: 2306 [2021-10-06 16:20:02,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-10-06 16:20:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2021-10-06 16:20:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2302 states have (on average 3.368375325803649) internal successors, (7754), 2305 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 7754 transitions. [2021-10-06 16:20:02,660 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 7754 transitions. Word has length 28 [2021-10-06 16:20:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:02,660 INFO L470 AbstractCegarLoop]: Abstraction has 2306 states and 7754 transitions. [2021-10-06 16:20:02,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 7754 transitions. [2021-10-06 16:20:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:02,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:02,665 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:02,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-06 16:20:02,666 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1345278942, now seen corresponding path program 5 times [2021-10-06 16:20:02,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:02,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443266512] [2021-10-06 16:20:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:02,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:02,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:02,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443266512] [2021-10-06 16:20:02,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443266512] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:02,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:02,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:02,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713918460] [2021-10-06 16:20:02,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:02,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:02,745 INFO L87 Difference]: Start difference. First operand 2306 states and 7754 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:02,876 INFO L93 Difference]: Finished difference Result 2340 states and 7808 transitions. [2021-10-06 16:20:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:02,886 INFO L225 Difference]: With dead ends: 2340 [2021-10-06 16:20:02,887 INFO L226 Difference]: Without dead ends: 2288 [2021-10-06 16:20:02,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2021-10-06 16:20:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2288. [2021-10-06 16:20:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2284 states have (on average 3.3677758318739053) internal successors, (7692), 2287 states have internal predecessors, (7692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 7692 transitions. [2021-10-06 16:20:02,969 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 7692 transitions. Word has length 28 [2021-10-06 16:20:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:02,970 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 7692 transitions. [2021-10-06 16:20:02,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 7692 transitions. [2021-10-06 16:20:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:02,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:02,977 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:02,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-06 16:20:02,977 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:02,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1339537157, now seen corresponding path program 3 times [2021-10-06 16:20:02,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:02,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229502700] [2021-10-06 16:20:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:02,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:03,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229502700] [2021-10-06 16:20:03,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229502700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:03,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:03,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:03,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502964949] [2021-10-06 16:20:03,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:03,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:03,052 INFO L87 Difference]: Start difference. First operand 2288 states and 7692 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:03,185 INFO L93 Difference]: Finished difference Result 2362 states and 7857 transitions. [2021-10-06 16:20:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:03,192 INFO L225 Difference]: With dead ends: 2362 [2021-10-06 16:20:03,192 INFO L226 Difference]: Without dead ends: 2218 [2021-10-06 16:20:03,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-10-06 16:20:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2160. [2021-10-06 16:20:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2156 states have (on average 3.3951762523191094) internal successors, (7320), 2159 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 7320 transitions. [2021-10-06 16:20:03,241 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 7320 transitions. Word has length 28 [2021-10-06 16:20:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 7320 transitions. [2021-10-06 16:20:03,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 7320 transitions. [2021-10-06 16:20:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:03,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:03,246 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:03,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-06 16:20:03,246 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -788975262, now seen corresponding path program 6 times [2021-10-06 16:20:03,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:03,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103836742] [2021-10-06 16:20:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:03,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103836742] [2021-10-06 16:20:03,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103836742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:03,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:03,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:03,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427447491] [2021-10-06 16:20:03,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:03,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:03,324 INFO L87 Difference]: Start difference. First operand 2160 states and 7320 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:03,436 INFO L93 Difference]: Finished difference Result 2152 states and 7305 transitions. [2021-10-06 16:20:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:20:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:03,445 INFO L225 Difference]: With dead ends: 2152 [2021-10-06 16:20:03,446 INFO L226 Difference]: Without dead ends: 2108 [2021-10-06 16:20:03,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:20:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-10-06 16:20:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2021-10-06 16:20:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2105 states have (on average 3.4294536817102137) internal successors, (7219), 2107 states have internal predecessors, (7219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 7219 transitions. [2021-10-06 16:20:03,528 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 7219 transitions. Word has length 28 [2021-10-06 16:20:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:03,528 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 7219 transitions. [2021-10-06 16:20:03,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 7219 transitions. [2021-10-06 16:20:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:03,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:03,537 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:03,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-06 16:20:03,537 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash -782653998, now seen corresponding path program 3 times [2021-10-06 16:20:03,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:03,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965420796] [2021-10-06 16:20:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:03,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965420796] [2021-10-06 16:20:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965420796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:03,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:03,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:03,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131819894] [2021-10-06 16:20:03,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:03,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:03,614 INFO L87 Difference]: Start difference. First operand 2108 states and 7219 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:03,746 INFO L93 Difference]: Finished difference Result 2176 states and 7373 transitions. [2021-10-06 16:20:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:03,756 INFO L225 Difference]: With dead ends: 2176 [2021-10-06 16:20:03,757 INFO L226 Difference]: Without dead ends: 2056 [2021-10-06 16:20:03,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-10-06 16:20:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1998. [2021-10-06 16:20:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1995 states have (on average 3.4516290726817043) internal successors, (6886), 1997 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 6886 transitions. [2021-10-06 16:20:03,828 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 6886 transitions. Word has length 28 [2021-10-06 16:20:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:03,828 INFO L470 AbstractCegarLoop]: Abstraction has 1998 states and 6886 transitions. [2021-10-06 16:20:03,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 6886 transitions. [2021-10-06 16:20:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:03,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:03,837 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:03,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-06 16:20:03,837 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash 440043507, now seen corresponding path program 4 times [2021-10-06 16:20:03,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:03,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495876206] [2021-10-06 16:20:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:03,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495876206] [2021-10-06 16:20:03,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495876206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:03,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:03,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:03,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995459165] [2021-10-06 16:20:03,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:03,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:03,912 INFO L87 Difference]: Start difference. First operand 1998 states and 6886 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:04,031 INFO L93 Difference]: Finished difference Result 2072 states and 7051 transitions. [2021-10-06 16:20:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:04,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:04,039 INFO L225 Difference]: With dead ends: 2072 [2021-10-06 16:20:04,040 INFO L226 Difference]: Without dead ends: 2048 [2021-10-06 16:20:04,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-10-06 16:20:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2038. [2021-10-06 16:20:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2035 states have (on average 3.428992628992629) internal successors, (6978), 2037 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6978 transitions. [2021-10-06 16:20:04,097 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 6978 transitions. Word has length 28 [2021-10-06 16:20:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:04,098 INFO L470 AbstractCegarLoop]: Abstraction has 2038 states and 6978 transitions. [2021-10-06 16:20:04,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 6978 transitions. [2021-10-06 16:20:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:04,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:04,103 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:04,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-06 16:20:04,104 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 440062196, now seen corresponding path program 4 times [2021-10-06 16:20:04,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:04,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61303374] [2021-10-06 16:20:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:04,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:04,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:04,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61303374] [2021-10-06 16:20:04,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61303374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:04,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:04,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-06 16:20:04,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894241473] [2021-10-06 16:20:04,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:04,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:04,185 INFO L87 Difference]: Start difference. First operand 2038 states and 6978 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:04,317 INFO L93 Difference]: Finished difference Result 2058 states and 7014 transitions. [2021-10-06 16:20:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:04,326 INFO L225 Difference]: With dead ends: 2058 [2021-10-06 16:20:04,327 INFO L226 Difference]: Without dead ends: 1558 [2021-10-06 16:20:04,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-10-06 16:20:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2021-10-06 16:20:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1555 states have (on average 3.359485530546624) internal successors, (5224), 1557 states have internal predecessors, (5224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 5224 transitions. [2021-10-06 16:20:04,390 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 5224 transitions. Word has length 28 [2021-10-06 16:20:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:04,391 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 5224 transitions. [2021-10-06 16:20:04,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 5224 transitions. [2021-10-06 16:20:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:04,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:04,398 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-06 16:20:04,399 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:04,399 INFO L82 PathProgramCache]: Analyzing trace with hash -831915997, now seen corresponding path program 5 times [2021-10-06 16:20:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:04,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444015498] [2021-10-06 16:20:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:04,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:04,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:04,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444015498] [2021-10-06 16:20:04,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444015498] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:04,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:04,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:04,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588931686] [2021-10-06 16:20:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:04,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:04,516 INFO L87 Difference]: Start difference. First operand 1558 states and 5224 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:04,707 INFO L93 Difference]: Finished difference Result 2350 states and 8058 transitions. [2021-10-06 16:20:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:20:04,708 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:04,718 INFO L225 Difference]: With dead ends: 2350 [2021-10-06 16:20:04,718 INFO L226 Difference]: Without dead ends: 2326 [2021-10-06 16:20:04,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:20:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-10-06 16:20:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 1550. [2021-10-06 16:20:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1547 states have (on average 3.3600517129928895) internal successors, (5198), 1549 states have internal predecessors, (5198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 5198 transitions. [2021-10-06 16:20:04,782 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 5198 transitions. Word has length 28 [2021-10-06 16:20:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:04,782 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 5198 transitions. [2021-10-06 16:20:04,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 5198 transitions. [2021-10-06 16:20:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:04,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:04,788 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:04,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-06 16:20:04,789 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -831897308, now seen corresponding path program 5 times [2021-10-06 16:20:04,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:04,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643327876] [2021-10-06 16:20:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:04,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:04,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:04,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643327876] [2021-10-06 16:20:04,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643327876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:04,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:04,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:04,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384730117] [2021-10-06 16:20:04,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:04,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:04,894 INFO L87 Difference]: Start difference. First operand 1550 states and 5198 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:05,119 INFO L93 Difference]: Finished difference Result 2336 states and 8021 transitions. [2021-10-06 16:20:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:20:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:05,130 INFO L225 Difference]: With dead ends: 2336 [2021-10-06 16:20:05,131 INFO L226 Difference]: Without dead ends: 2236 [2021-10-06 16:20:05,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:20:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-10-06 16:20:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1460. [2021-10-06 16:20:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1457 states have (on average 3.3774879890185314) internal successors, (4921), 1459 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 4921 transitions. [2021-10-06 16:20:05,200 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 4921 transitions. Word has length 28 [2021-10-06 16:20:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:05,201 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 4921 transitions. [2021-10-06 16:20:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 4921 transitions. [2021-10-06 16:20:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:05,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:05,206 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:05,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-06 16:20:05,207 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:05,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash -867270877, now seen corresponding path program 6 times [2021-10-06 16:20:05,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:05,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040737982] [2021-10-06 16:20:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:05,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:05,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:05,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040737982] [2021-10-06 16:20:05,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040737982] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:05,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:05,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:05,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458088301] [2021-10-06 16:20:05,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:05,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:05,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:05,313 INFO L87 Difference]: Start difference. First operand 1460 states and 4921 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:05,516 INFO L93 Difference]: Finished difference Result 2232 states and 7724 transitions. [2021-10-06 16:20:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:05,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:05,526 INFO L225 Difference]: With dead ends: 2232 [2021-10-06 16:20:05,526 INFO L226 Difference]: Without dead ends: 2200 [2021-10-06 16:20:05,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2021-10-06 16:20:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1424. [2021-10-06 16:20:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1422 states have (on average 3.39943741209564) internal successors, (4834), 1423 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4834 transitions. [2021-10-06 16:20:05,585 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4834 transitions. Word has length 28 [2021-10-06 16:20:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:05,586 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4834 transitions. [2021-10-06 16:20:05,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4834 transitions. [2021-10-06 16:20:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:05,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:05,591 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:05,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-06 16:20:05,591 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -867289036, now seen corresponding path program 5 times [2021-10-06 16:20:05,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:05,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959814539] [2021-10-06 16:20:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:05,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:05,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:05,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959814539] [2021-10-06 16:20:05,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959814539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:05,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:05,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:05,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949514367] [2021-10-06 16:20:05,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:05,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:05,698 INFO L87 Difference]: Start difference. First operand 1424 states and 4834 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:05,925 INFO L93 Difference]: Finished difference Result 2224 states and 7682 transitions. [2021-10-06 16:20:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:20:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:05,937 INFO L225 Difference]: With dead ends: 2224 [2021-10-06 16:20:05,937 INFO L226 Difference]: Without dead ends: 2088 [2021-10-06 16:20:05,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:20:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-10-06 16:20:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1312. [2021-10-06 16:20:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1310 states have (on average 3.4396946564885496) internal successors, (4506), 1311 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 4506 transitions. [2021-10-06 16:20:05,995 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 4506 transitions. Word has length 28 [2021-10-06 16:20:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:05,996 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 4506 transitions. [2021-10-06 16:20:05,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 4506 transitions. [2021-10-06 16:20:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:06,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:06,000 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:06,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-06 16:20:06,001 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -849306908, now seen corresponding path program 6 times [2021-10-06 16:20:06,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:06,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261623261] [2021-10-06 16:20:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:06,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:06,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:06,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261623261] [2021-10-06 16:20:06,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261623261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:06,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:06,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:06,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956261057] [2021-10-06 16:20:06,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:06,098 INFO L87 Difference]: Start difference. First operand 1312 states and 4506 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:06,267 INFO L93 Difference]: Finished difference Result 2086 states and 7313 transitions. [2021-10-06 16:20:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:06,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:06,276 INFO L225 Difference]: With dead ends: 2086 [2021-10-06 16:20:06,276 INFO L226 Difference]: Without dead ends: 2066 [2021-10-06 16:20:06,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-10-06 16:20:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1290. [2021-10-06 16:20:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.4577191621411947) internal successors, (4457), 1289 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4457 transitions. [2021-10-06 16:20:06,331 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4457 transitions. Word has length 28 [2021-10-06 16:20:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:06,331 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4457 transitions. [2021-10-06 16:20:06,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4457 transitions. [2021-10-06 16:20:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:06,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:06,336 INFO L512 BasicCegarLoop]: 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] [2021-10-06 16:20:06,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-06 16:20:06,336 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash -849343756, now seen corresponding path program 6 times [2021-10-06 16:20:06,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:06,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788895949] [2021-10-06 16:20:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:06,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:06,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:06,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788895949] [2021-10-06 16:20:06,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788895949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:06,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:06,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-06 16:20:06,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327960485] [2021-10-06 16:20:06,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:06,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:06,443 INFO L87 Difference]: Start difference. First operand 1290 states and 4457 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:06,616 INFO L93 Difference]: Finished difference Result 2060 states and 7256 transitions. [2021-10-06 16:20:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-06 16:20:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:06,616 INFO L225 Difference]: With dead ends: 2060 [2021-10-06 16:20:06,617 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 16:20:06,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 16:20:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 16:20:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 16:20:06,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-06 16:20:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 16:20:06,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 16:20:06,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 16:20:06,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,625 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,625 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:20:06,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:20:06,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 16:20:06,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 16:20:06,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:20:06,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-06 16:20:06,640 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:20:06,640 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:20:06,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:20:06 BasicIcfg [2021-10-06 16:20:06,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:20:06,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:20:06,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:20:06,644 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:20:06,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:19:28" (3/4) ... [2021-10-06 16:20:06,648 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-06 16:20:06,655 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-06 16:20:06,655 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-06 16:20:06,655 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-06 16:20:06,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-06 16:20:06,661 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-06 16:20:06,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-06 16:20:06,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-06 16:20:06,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-06 16:20:06,709 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel/ticket-4.wvr.c-witness.graphml [2021-10-06 16:20:06,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:20:06,711 INFO L168 Benchmark]: Toolchain (without parser) took 39420.82 ms. Allocated memory was 168.8 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 143.1 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,712 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 141.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:20:06,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.72 ms. Allocated memory is still 168.8 MB. Free memory was 142.6 MB in the beginning and 132.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,713 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 168.8 MB. Free memory was 132.1 MB in the beginning and 130.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,713 INFO L168 Benchmark]: Boogie Preprocessor took 31.99 ms. Allocated memory is still 168.8 MB. Free memory was 130.0 MB in the beginning and 128.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,714 INFO L168 Benchmark]: RCFGBuilder took 790.55 ms. Allocated memory is still 168.8 MB. Free memory was 128.7 MB in the beginning and 107.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,714 INFO L168 Benchmark]: TraceAbstraction took 38122.95 ms. Allocated memory was 168.8 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 107.2 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,714 INFO L168 Benchmark]: Witness Printer took 66.13 ms. Allocated memory is still 6.1 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-10-06 16:20:06,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 141.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.72 ms. Allocated memory is still 168.8 MB. Free memory was 142.6 MB in the beginning and 132.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 168.8 MB. Free memory was 132.1 MB in the beginning and 130.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.99 ms. Allocated memory is still 168.8 MB. Free memory was 130.0 MB in the beginning and 128.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 790.55 ms. Allocated memory is still 168.8 MB. Free memory was 128.7 MB in the beginning and 107.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38122.95 ms. Allocated memory was 168.8 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 107.2 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. * Witness Printer took 66.13 ms. Allocated memory is still 6.1 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6521.8ms, 189 PlacesBefore, 71 PlacesAfterwards, 182 TransitionsBefore, 59 TransitionsAfterwards, 6996 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 154 TotalNumberOfCompositions, 18853 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11239, positive: 10934, positive conditional: 0, positive unconditional: 10934, negative: 305, negative conditional: 0, negative unconditional: 305, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4969, positive: 4885, positive conditional: 0, positive unconditional: 4885, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4969, positive: 4857, positive conditional: 0, positive unconditional: 4857, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 112, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 187, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11239, positive: 6049, positive conditional: 0, positive unconditional: 6049, negative: 221, negative conditional: 0, negative unconditional: 221, unknown: 4969, unknown conditional: 0, unknown unconditional: 4969] , Statistics on independence cache: Total cache size (in pairs): 772, Positive cache size: 730, Positive conditional cache size: 0, Positive unconditional cache size: 730, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 258 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 37948.3ms, OverallIterations: 48, TraceHistogramMax: 1, EmptinessCheckTime: 452.7ms, AutomataDifference: 12898.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8198.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2982 SDtfs, 7197 SDslu, 9596 SDs, 0 SdLazy, 6779 SolverSat, 394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3840.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2081.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26652occurred in iteration=2, InterpolantAutomatonStates: 488, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11937.1ms AutomataMinimizationTime, 48 MinimizatonAttempts, 22076 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 126.9ms SsaConstructionTime, 1036.8ms SatisfiabilityAnalysisTime, 2695.0ms InterpolantComputationTime, 1066 NumberOfCodeBlocks, 1066 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 3626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 16:20:06,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...