/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/popl20-more-vector-add.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:13:19,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:13:19,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:13:19,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 16:13:19,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 16:13:19,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 16:13:19,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 16:13:19,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 16:13:19,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 16:13:19,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 16:13:19,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 16:13:19,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 16:13:19,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:13:19,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:13:19,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:13:19,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:13:19,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:13:19,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:13:19,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:13:19,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:13:19,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:13:19,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:13:19,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:13:19,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:13:19,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 16:13:19,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 16:13:19,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 16:13:19,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 16:13:19,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 16:13:19,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 16:13:19,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:13:19,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:13:19,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:13:19,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:13:19,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:13:19,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:13:19,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:13:19,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:13:19,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:13:19,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:13:19,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:13:19,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:13:19,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:13:19,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:13:19,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:13:19,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:13:19,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:13:19,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:13:19,975 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:13:19,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:13:19,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:13:19,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:13:19,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:13:19,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:13:19,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:13:19,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:13:19,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:13:19,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:13:19,978 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:13:19,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:13:19,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:13:19,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:13:19,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:13:19,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:13:19,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:13:19,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:13:19,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:19,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:13:19,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:13:19,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:13:19,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:13:19,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:13:19,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:13:19,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:13:19,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:13:20,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:13:20,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:13:20,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:13:20,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:13:20,434 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:13:20,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-10-08 16:13:20,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cec7baaf/2c0b9c7e907d417a887ab67e36a371ff/FLAG2be573d0a [2021-10-08 16:13:21,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:13:21,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-10-08 16:13:21,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cec7baaf/2c0b9c7e907d417a887ab67e36a371ff/FLAG2be573d0a [2021-10-08 16:13:21,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cec7baaf/2c0b9c7e907d417a887ab67e36a371ff [2021-10-08 16:13:21,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:13:21,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:13:21,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:21,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:13:21,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:13:21,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9d4280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21, skipping insertion in model container [2021-10-08 16:13:21,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:13:21,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:13:21,797 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/popl20-more-vector-add.wvr.c[2586,2599] [2021-10-08 16:13:21,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:21,830 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:13:21,887 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/popl20-more-vector-add.wvr.c[2586,2599] [2021-10-08 16:13:21,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:21,909 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:13:21,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21 WrapperNode [2021-10-08 16:13:21,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:21,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:21,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:13:21,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:13:21,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:21,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:13:21,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:13:21,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:13:21,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:21,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:22,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:22,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:22,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:13:22,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:13:22,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:13:22,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:13:22,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (1/1) ... [2021-10-08 16:13:22,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:22,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:22,050 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) [2021-10-08 16:13:22,075 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 [2021-10-08 16:13:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:13:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:13:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:13:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:13:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:13:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:13:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:13:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:13:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:13:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:13:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:13:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:13:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:13:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:13:22,118 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:13:22,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:13:22,805 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-08 16:13:22,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:22 BoogieIcfgContainer [2021-10-08 16:13:22,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:13:22,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:13:22,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:13:22,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:13:22,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:13:21" (1/3) ... [2021-10-08 16:13:22,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ea403c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:22, skipping insertion in model container [2021-10-08 16:13:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:21" (2/3) ... [2021-10-08 16:13:22,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ea403c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:22, skipping insertion in model container [2021-10-08 16:13:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:22" (3/3) ... [2021-10-08 16:13:22,818 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2021-10-08 16:13:22,825 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:13:22,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:13:22,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-08 16:13:22,826 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:13:22,884 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,884 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,885 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,885 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,885 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,885 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,886 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,886 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,886 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,886 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,886 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,887 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,887 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,887 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,887 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,888 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,889 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,889 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,890 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,891 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,891 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,891 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,891 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,892 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,893 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,893 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,893 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,893 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,894 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,895 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,896 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,896 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,896 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,897 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,897 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,897 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,897 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,898 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,899 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,899 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,900 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,900 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,901 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,901 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,901 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,901 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,901 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,902 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,902 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,902 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,902 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,902 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,903 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,903 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,903 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,903 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,905 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,905 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,907 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,907 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,907 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,907 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,907 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,908 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,908 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,908 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,908 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,909 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,909 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,909 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,909 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,909 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,910 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,910 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,910 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,910 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,910 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,911 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,911 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,913 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,913 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,913 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,913 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,913 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,914 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,914 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,914 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,914 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,915 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,915 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,915 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,915 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,915 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,920 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,921 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,925 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,926 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,926 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,926 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,926 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,926 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,928 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,929 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:22,938 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:13:22,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:13:23,009 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 [2021-10-08 16:13:23,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-08 16:13:23,033 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:13:23,047 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 287 transitions, 598 flow [2021-10-08 16:13:23,050 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 287 transitions, 598 flow [2021-10-08 16:13:23,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 598 flow [2021-10-08 16:13:23,255 INFO L129 PetriNetUnfolder]: 25/284 cut-off events. [2021-10-08 16:13:23,256 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:13:23,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 25/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 267 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 229. Up to 2 conditions per place. [2021-10-08 16:13:23,275 INFO L116 LiptonReduction]: Number of co-enabled transitions 3240 [2021-10-08 16:13:34,577 INFO L131 LiptonReduction]: Checked pairs total: 7327 [2021-10-08 16:13:34,578 INFO L133 LiptonReduction]: Total number of compositions: 320 [2021-10-08 16:13:34,591 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 53 transitions, 130 flow [2021-10-08 16:13:34,690 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 918 states, 884 states have (on average 3.4457013574660635) internal successors, (3046), 917 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 918 states, 884 states have (on average 3.4457013574660635) internal successors, (3046), 917 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:13:34,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:34,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:13:34,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 34910, now seen corresponding path program 1 times [2021-10-08 16:13:34,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:34,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835332319] [2021-10-08 16:13:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:34,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:35,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:35,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835332319] [2021-10-08 16:13:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835332319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:35,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:35,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:35,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906763165] [2021-10-08 16:13:35,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:35,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:35,082 INFO L87 Difference]: Start difference. First operand has 918 states, 884 states have (on average 3.4457013574660635) internal successors, (3046), 917 states have internal predecessors, (3046), 0 states have call successors, (0), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:35,191 INFO L93 Difference]: Finished difference Result 914 states and 3042 transitions. [2021-10-08 16:13:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-08 16:13:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:35,226 INFO L225 Difference]: With dead ends: 914 [2021-10-08 16:13:35,226 INFO L226 Difference]: Without dead ends: 914 [2021-10-08 16:13:35,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-08 16:13:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 914. [2021-10-08 16:13:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 884 states have (on average 3.4411764705882355) internal successors, (3042), 913 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 3042 transitions. [2021-10-08 16:13:35,367 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 3042 transitions. Word has length 2 [2021-10-08 16:13:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:35,369 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 3042 transitions. [2021-10-08 16:13:35,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 3042 transitions. [2021-10-08 16:13:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:13:35,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:35,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:13:35,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:13:35,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash 34911, now seen corresponding path program 1 times [2021-10-08 16:13:35,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:35,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128117266] [2021-10-08 16:13:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:35,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:35,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:35,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128117266] [2021-10-08 16:13:35,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128117266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:35,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:35,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:35,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861007634] [2021-10-08 16:13:35,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:35,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:35,487 INFO L87 Difference]: Start difference. First operand 914 states and 3042 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:35,558 INFO L93 Difference]: Finished difference Result 1823 states and 6079 transitions. [2021-10-08 16:13:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-08 16:13:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:35,579 INFO L225 Difference]: With dead ends: 1823 [2021-10-08 16:13:35,579 INFO L226 Difference]: Without dead ends: 1823 [2021-10-08 16:13:35,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-10-08 16:13:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 918. [2021-10-08 16:13:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 888 states have (on average 3.434684684684685) internal successors, (3050), 917 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3050 transitions. [2021-10-08 16:13:35,639 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3050 transitions. Word has length 2 [2021-10-08 16:13:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:35,639 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 3050 transitions. [2021-10-08 16:13:35,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3050 transitions. [2021-10-08 16:13:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:13:35,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:35,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:13:35,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:13:35,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1084168, now seen corresponding path program 1 times [2021-10-08 16:13:35,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:35,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630712813] [2021-10-08 16:13:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:35,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:35,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:35,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630712813] [2021-10-08 16:13:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630712813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:35,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784296476] [2021-10-08 16:13:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:35,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:35,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:35,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:13:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:35,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784296476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:35,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:35,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 16:13:35,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852613156] [2021-10-08 16:13:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:35,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:35,841 INFO L87 Difference]: Start difference. First operand 918 states and 3050 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2021-10-08 16:13:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:35,978 INFO L93 Difference]: Finished difference Result 2732 states and 9116 transitions. [2021-10-08 16:13:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2021-10-08 16:13:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:36,109 INFO L225 Difference]: With dead ends: 2732 [2021-10-08 16:13:36,110 INFO L226 Difference]: Without dead ends: 2732 [2021-10-08 16:13:36,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-10-08 16:13:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 922. [2021-10-08 16:13:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 892 states have (on average 3.428251121076233) internal successors, (3058), 921 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 3058 transitions. [2021-10-08 16:13:36,189 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 3058 transitions. Word has length 3 [2021-10-08 16:13:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:36,190 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 3058 transitions. [2021-10-08 16:13:36,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2021-10-08 16:13:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 3058 transitions. [2021-10-08 16:13:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:13:36,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:36,191 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:13:36,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:36,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:36,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 33611135, now seen corresponding path program 2 times [2021-10-08 16:13:36,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:36,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854993110] [2021-10-08 16:13:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:36,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:36,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:36,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854993110] [2021-10-08 16:13:36,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854993110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:36,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120935334] [2021-10-08 16:13:36,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:36,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:36,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:36,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:36,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:13:36,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:36,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:36,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:13:36,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:36,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120935334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:36,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:36,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:13:36,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672056386] [2021-10-08 16:13:36,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:36,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:36,616 INFO L87 Difference]: Start difference. First operand 922 states and 3058 transitions. 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) [2021-10-08 16:13:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:36,659 INFO L93 Difference]: Finished difference Result 921 states and 3057 transitions. [2021-10-08 16:13:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:36,660 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 4 [2021-10-08 16:13:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:36,669 INFO L225 Difference]: With dead ends: 921 [2021-10-08 16:13:36,669 INFO L226 Difference]: Without dead ends: 921 [2021-10-08 16:13:36,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-10-08 16:13:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2021-10-08 16:13:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 890 states have (on average 3.4303370786516854) internal successors, (3053), 918 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 3053 transitions. [2021-10-08 16:13:36,719 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 3053 transitions. Word has length 4 [2021-10-08 16:13:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:36,719 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 3053 transitions. [2021-10-08 16:13:36,720 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) [2021-10-08 16:13:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 3053 transitions. [2021-10-08 16:13:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:36,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:36,720 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:13:36,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:36,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:36,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1042732580, now seen corresponding path program 1 times [2021-10-08 16:13:36,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:36,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62451306] [2021-10-08 16:13:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:36,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:13:36,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:36,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62451306] [2021-10-08 16:13:36,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62451306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:36,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:36,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:13:36,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507094883] [2021-10-08 16:13:36,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:36,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:36,994 INFO L87 Difference]: Start difference. First operand 919 states and 3053 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:37,102 INFO L93 Difference]: Finished difference Result 1828 states and 6087 transitions. [2021-10-08 16:13:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:13:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-08 16:13:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:37,123 INFO L225 Difference]: With dead ends: 1828 [2021-10-08 16:13:37,123 INFO L226 Difference]: Without dead ends: 1828 [2021-10-08 16:13:37,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-10-08 16:13:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 923. [2021-10-08 16:13:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 894 states have (on average 3.4205816554809845) internal successors, (3058), 922 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 3058 transitions. [2021-10-08 16:13:37,182 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 3058 transitions. Word has length 5 [2021-10-08 16:13:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:37,182 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 3058 transitions. [2021-10-08 16:13:37,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 3058 transitions. [2021-10-08 16:13:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:13:37,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:37,184 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:13:37,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 16:13:37,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:37,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2058590501, now seen corresponding path program 1 times [2021-10-08 16:13:37,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:37,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094007050] [2021-10-08 16:13:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:37,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:37,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:37,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094007050] [2021-10-08 16:13:37,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094007050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:37,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28149483] [2021-10-08 16:13:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:37,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:37,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:37,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:13:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:37,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:13:37,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:37,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28149483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:37,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:37,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:13:37,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914524017] [2021-10-08 16:13:37,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:13:37,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:13:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:13:37,437 INFO L87 Difference]: Start difference. First operand 923 states and 3058 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:37,721 INFO L93 Difference]: Finished difference Result 3645 states and 12156 transitions. [2021-10-08 16:13:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:13:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-10-08 16:13:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:37,767 INFO L225 Difference]: With dead ends: 3645 [2021-10-08 16:13:37,767 INFO L226 Difference]: Without dead ends: 3645 [2021-10-08 16:13:37,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:13:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2021-10-08 16:13:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 929. [2021-10-08 16:13:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 900 states have (on average 3.408888888888889) internal successors, (3068), 928 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3068 transitions. [2021-10-08 16:13:37,858 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3068 transitions. Word has length 6 [2021-10-08 16:13:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:37,858 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 3068 transitions. [2021-10-08 16:13:37,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3068 transitions. [2021-10-08 16:13:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:13:37,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:37,859 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-08 16:13:37,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:38,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:38,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash 584641796, now seen corresponding path program 2 times [2021-10-08 16:13:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864127743] [2021-10-08 16:13:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:38,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:38,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864127743] [2021-10-08 16:13:38,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864127743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:38,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245103867] [2021-10-08 16:13:38,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:38,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:38,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:38,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:13:38,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:38,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:38,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:13:38,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:13:38,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245103867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:38,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:38,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2021-10-08 16:13:38,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908630900] [2021-10-08 16:13:38,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:38,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:38,315 INFO L87 Difference]: Start difference. First operand 929 states and 3068 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:38,362 INFO L93 Difference]: Finished difference Result 926 states and 3065 transitions. [2021-10-08 16:13:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:38,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 [2021-10-08 16:13:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:38,384 INFO L225 Difference]: With dead ends: 926 [2021-10-08 16:13:38,384 INFO L226 Difference]: Without dead ends: 926 [2021-10-08 16:13:38,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:13:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-08 16:13:38,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 924. [2021-10-08 16:13:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 898 states have (on average 3.408685968819599) internal successors, (3061), 923 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 3061 transitions. [2021-10-08 16:13:38,435 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 3061 transitions. Word has length 7 [2021-10-08 16:13:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:38,436 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 3061 transitions. [2021-10-08 16:13:38,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 3061 transitions. [2021-10-08 16:13:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:13:38,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:38,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:38,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:38,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2112185859, now seen corresponding path program 1 times [2021-10-08 16:13:38,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338249891] [2021-10-08 16:13:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:38,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:38,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338249891] [2021-10-08 16:13:38,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338249891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:38,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:38,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:38,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983343874] [2021-10-08 16:13:38,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:38,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,745 INFO L87 Difference]: Start difference. First operand 924 states and 3061 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:38,764 INFO L93 Difference]: Finished difference Result 810 states and 2672 transitions. [2021-10-08 16:13:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:38,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-08 16:13:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:38,772 INFO L225 Difference]: With dead ends: 810 [2021-10-08 16:13:38,772 INFO L226 Difference]: Without dead ends: 810 [2021-10-08 16:13:38,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-10-08 16:13:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 810. [2021-10-08 16:13:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 793 states have (on average 3.369482976040353) internal successors, (2672), 809 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2672 transitions. [2021-10-08 16:13:38,811 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2672 transitions. Word has length 10 [2021-10-08 16:13:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:38,812 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2672 transitions. [2021-10-08 16:13:38,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2672 transitions. [2021-10-08 16:13:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:13:38,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:38,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:38,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 16:13:38,814 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2112185860, now seen corresponding path program 1 times [2021-10-08 16:13:38,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068159520] [2021-10-08 16:13:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:38,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:38,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068159520] [2021-10-08 16:13:38,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068159520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:38,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:38,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:13:38,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070928223] [2021-10-08 16:13:38,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:38,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:38,909 INFO L87 Difference]: Start difference. First operand 810 states and 2672 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,017 INFO L93 Difference]: Finished difference Result 1489 states and 4926 transitions. [2021-10-08 16:13:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:13:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-08 16:13:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,040 INFO L225 Difference]: With dead ends: 1489 [2021-10-08 16:13:39,040 INFO L226 Difference]: Without dead ends: 1481 [2021-10-08 16:13:39,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-10-08 16:13:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1261. [2021-10-08 16:13:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1244 states have (on average 3.469453376205788) internal successors, (4316), 1260 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 4316 transitions. [2021-10-08 16:13:39,122 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 4316 transitions. Word has length 10 [2021-10-08 16:13:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,122 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 4316 transitions. [2021-10-08 16:13:39,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 4316 transitions. [2021-10-08 16:13:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:13:39,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,127 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:39,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:13:39,132 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:39,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2018360340, now seen corresponding path program 1 times [2021-10-08 16:13:39,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:39,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697451090] [2021-10-08 16:13:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:39,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:39,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697451090] [2021-10-08 16:13:39,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697451090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:39,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:39,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:39,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709934024] [2021-10-08 16:13:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:39,185 INFO L87 Difference]: Start difference. First operand 1261 states and 4316 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:13:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,219 INFO L93 Difference]: Finished difference Result 1957 states and 6903 transitions. [2021-10-08 16:13:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2021-10-08 16:13:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,232 INFO L225 Difference]: With dead ends: 1957 [2021-10-08 16:13:39,232 INFO L226 Difference]: Without dead ends: 1957 [2021-10-08 16:13:39,233 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 [2021-10-08 16:13:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-10-08 16:13:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1783. [2021-10-08 16:13:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1766 states have (on average 3.667044167610419) internal successors, (6476), 1782 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 6476 transitions. [2021-10-08 16:13:39,323 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 6476 transitions. Word has length 12 [2021-10-08 16:13:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,324 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 6476 transitions. [2021-10-08 16:13:39,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:13:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 6476 transitions. [2021-10-08 16:13:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:13:39,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:39,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 16:13:39,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:39,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2018360339, now seen corresponding path program 1 times [2021-10-08 16:13:39,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:39,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305431452] [2021-10-08 16:13:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:39,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:39,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305431452] [2021-10-08 16:13:39,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305431452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:39,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:39,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:39,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513831668] [2021-10-08 16:13:39,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:39,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:39,365 INFO L87 Difference]: Start difference. First operand 1783 states and 6476 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:13:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,390 INFO L93 Difference]: Finished difference Result 1609 states and 5694 transitions. [2021-10-08 16:13:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:39,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2021-10-08 16:13:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,401 INFO L225 Difference]: With dead ends: 1609 [2021-10-08 16:13:39,401 INFO L226 Difference]: Without dead ends: 1609 [2021-10-08 16:13:39,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-10-08 16:13:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2021-10-08 16:13:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1598 states have (on average 3.563204005006258) internal successors, (5694), 1608 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 5694 transitions. [2021-10-08 16:13:39,474 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 5694 transitions. Word has length 12 [2021-10-08 16:13:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,475 INFO L470 AbstractCegarLoop]: Abstraction has 1609 states and 5694 transitions. [2021-10-08 16:13:39,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:13:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 5694 transitions. [2021-10-08 16:13:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:13:39,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:39,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:13:39,477 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:39,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1467013967, now seen corresponding path program 1 times [2021-10-08 16:13:39,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:39,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979617209] [2021-10-08 16:13:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:39,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:39,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979617209] [2021-10-08 16:13:39,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979617209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:39,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815010665] [2021-10-08 16:13:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:39,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:39,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:13:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:13:39,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:13:39,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815010665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:39,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:39,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-10-08 16:13:39,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909928278] [2021-10-08 16:13:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:39,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:39,655 INFO L87 Difference]: Start difference. First operand 1609 states and 5694 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) [2021-10-08 16:13:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,693 INFO L93 Difference]: Finished difference Result 2759 states and 9815 transitions. [2021-10-08 16:13:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:39,693 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 [2021-10-08 16:13:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,737 INFO L225 Difference]: With dead ends: 2759 [2021-10-08 16:13:39,737 INFO L226 Difference]: Without dead ends: 2759 [2021-10-08 16:13:39,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-10-08 16:13:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2047. [2021-10-08 16:13:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2036 states have (on average 3.6262278978388998) internal successors, (7383), 2046 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 7383 transitions. [2021-10-08 16:13:39,834 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 7383 transitions. Word has length 14 [2021-10-08 16:13:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,834 INFO L470 AbstractCegarLoop]: Abstraction has 2047 states and 7383 transitions. [2021-10-08 16:13:39,835 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) [2021-10-08 16:13:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 7383 transitions. [2021-10-08 16:13:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:13:39,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:39,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:40,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,050 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash 181068364, now seen corresponding path program 1 times [2021-10-08 16:13:40,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792824526] [2021-10-08 16:13:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792824526] [2021-10-08 16:13:40,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792824526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:40,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:40,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:13:40,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350383265] [2021-10-08 16:13:40,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:40,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:40,112 INFO L87 Difference]: Start difference. First operand 2047 states and 7383 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) [2021-10-08 16:13:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,238 INFO L93 Difference]: Finished difference Result 2217 states and 7768 transitions. [2021-10-08 16:13:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:13:40,239 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 [2021-10-08 16:13:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,254 INFO L225 Difference]: With dead ends: 2217 [2021-10-08 16:13:40,254 INFO L226 Difference]: Without dead ends: 2217 [2021-10-08 16:13:40,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2021-10-08 16:13:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2147. [2021-10-08 16:13:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2136 states have (on average 3.578183520599251) internal successors, (7643), 2146 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7643 transitions. [2021-10-08 16:13:40,353 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7643 transitions. Word has length 14 [2021-10-08 16:13:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,354 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 7643 transitions. [2021-10-08 16:13:40,355 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) [2021-10-08 16:13:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7643 transitions. [2021-10-08 16:13:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:13:40,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:40,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 16:13:40,357 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash 181068365, now seen corresponding path program 1 times [2021-10-08 16:13:40,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925948711] [2021-10-08 16:13:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925948711] [2021-10-08 16:13:40,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925948711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:40,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:40,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:40,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106888147] [2021-10-08 16:13:40,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:40,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:40,419 INFO L87 Difference]: Start difference. First operand 2147 states and 7643 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2021-10-08 16:13:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,455 INFO L93 Difference]: Finished difference Result 1893 states and 6664 transitions. [2021-10-08 16:13:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 [2021-10-08 16:13:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,466 INFO L225 Difference]: With dead ends: 1893 [2021-10-08 16:13:40,466 INFO L226 Difference]: Without dead ends: 1827 [2021-10-08 16:13:40,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-10-08 16:13:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1827. [2021-10-08 16:13:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1820 states have (on average 3.5142857142857142) internal successors, (6396), 1826 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 6396 transitions. [2021-10-08 16:13:40,559 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 6396 transitions. Word has length 14 [2021-10-08 16:13:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,560 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 6396 transitions. [2021-10-08 16:13:40,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2021-10-08 16:13:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 6396 transitions. [2021-10-08 16:13:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:13:40,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,561 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:40,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:13:40,562 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash 570980837, now seen corresponding path program 1 times [2021-10-08 16:13:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064440198] [2021-10-08 16:13:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064440198] [2021-10-08 16:13:40,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064440198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972478609] [2021-10-08 16:13:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:40,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:40,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:13:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:40,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972478609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:40,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-08 16:13:40,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844233167] [2021-10-08 16:13:40,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:40,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:40,737 INFO L87 Difference]: Start difference. First operand 1827 states and 6396 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-10-08 16:13:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,781 INFO L93 Difference]: Finished difference Result 2727 states and 9366 transitions. [2021-10-08 16:13:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:40,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2021-10-08 16:13:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,797 INFO L225 Difference]: With dead ends: 2727 [2021-10-08 16:13:40,797 INFO L226 Difference]: Without dead ends: 2727 [2021-10-08 16:13:40,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:13:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-10-08 16:13:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2439. [2021-10-08 16:13:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2432 states have (on average 3.5608552631578947) internal successors, (8660), 2438 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 8660 transitions. [2021-10-08 16:13:40,898 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 8660 transitions. Word has length 15 [2021-10-08 16:13:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,898 INFO L470 AbstractCegarLoop]: Abstraction has 2439 states and 8660 transitions. [2021-10-08 16:13:40,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-10-08 16:13:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 8660 transitions. [2021-10-08 16:13:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:13:40,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,901 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:40,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:41,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-08 16:13:41,117 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:41,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1775819193, now seen corresponding path program 1 times [2021-10-08 16:13:41,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:41,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878873644] [2021-10-08 16:13:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:41,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:41,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:41,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878873644] [2021-10-08 16:13:41,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878873644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151298840] [2021-10-08 16:13:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:41,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:41,181 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:41,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:13:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:41,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:13:41,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:41,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151298840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:41,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:13:41,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670425710] [2021-10-08 16:13:41,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:13:41,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:13:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:13:41,433 INFO L87 Difference]: Start difference. First operand 2439 states and 8660 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:41,755 INFO L93 Difference]: Finished difference Result 5503 states and 18624 transitions. [2021-10-08 16:13:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:13:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2021-10-08 16:13:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:41,790 INFO L225 Difference]: With dead ends: 5503 [2021-10-08 16:13:41,790 INFO L226 Difference]: Without dead ends: 5493 [2021-10-08 16:13:41,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:13:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2021-10-08 16:13:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 3815. [2021-10-08 16:13:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3808 states have (on average 3.6675420168067228) internal successors, (13966), 3814 states have internal predecessors, (13966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 13966 transitions. [2021-10-08 16:13:41,968 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 13966 transitions. Word has length 17 [2021-10-08 16:13:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:41,969 INFO L470 AbstractCegarLoop]: Abstraction has 3815 states and 13966 transitions. [2021-10-08 16:13:41,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 13966 transitions. [2021-10-08 16:13:41,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:13:41,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:41,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:42,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:42,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-08 16:13:42,187 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 938181241, now seen corresponding path program 1 times [2021-10-08 16:13:42,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:42,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505808372] [2021-10-08 16:13:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:42,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:42,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505808372] [2021-10-08 16:13:42,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505808372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587305667] [2021-10-08 16:13:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:42,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:42,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:42,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 16:13:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:42,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:13:42,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587305667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:42,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:42,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2021-10-08 16:13:42,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843548601] [2021-10-08 16:13:42,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:42,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:42,439 INFO L87 Difference]: Start difference. First operand 3815 states and 13966 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:42,501 INFO L93 Difference]: Finished difference Result 3381 states and 12318 transitions. [2021-10-08 16:13:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-08 16:13:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:42,522 INFO L225 Difference]: With dead ends: 3381 [2021-10-08 16:13:42,522 INFO L226 Difference]: Without dead ends: 3305 [2021-10-08 16:13:42,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:13:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2021-10-08 16:13:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 2543. [2021-10-08 16:13:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2540 states have (on average 3.62992125984252) internal successors, (9220), 2542 states have internal predecessors, (9220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 9220 transitions. [2021-10-08 16:13:42,675 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 9220 transitions. Word has length 18 [2021-10-08 16:13:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:42,676 INFO L470 AbstractCegarLoop]: Abstraction has 2543 states and 9220 transitions. [2021-10-08 16:13:42,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 9220 transitions. [2021-10-08 16:13:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:13:42,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:42,679 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:42,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:42,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 16:13:42,894 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:42,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2021348684, now seen corresponding path program 2 times [2021-10-08 16:13:42,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:42,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147726581] [2021-10-08 16:13:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:42,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:42,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147726581] [2021-10-08 16:13:42,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147726581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573553667] [2021-10-08 16:13:42,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:42,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:42,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:42,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:13:43,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:43,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:43,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:43,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 16:13:43,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573553667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:43,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2021-10-08 16:13:43,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825194967] [2021-10-08 16:13:43,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:13:43,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:43,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:13:43,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:43,107 INFO L87 Difference]: Start difference. First operand 2543 states and 9220 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:43,199 INFO L93 Difference]: Finished difference Result 3713 states and 13049 transitions. [2021-10-08 16:13:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:13:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 18 [2021-10-08 16:13:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:43,215 INFO L225 Difference]: With dead ends: 3713 [2021-10-08 16:13:43,215 INFO L226 Difference]: Without dead ends: 2544 [2021-10-08 16:13:43,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:13:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-10-08 16:13:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 696. [2021-10-08 16:13:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 3.3338129496402877) internal successors, (2317), 695 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 2317 transitions. [2021-10-08 16:13:43,259 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 2317 transitions. Word has length 18 [2021-10-08 16:13:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:43,259 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 2317 transitions. [2021-10-08 16:13:43,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 2317 transitions. [2021-10-08 16:13:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:13:43,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:43,261 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:43,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:43,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:43,475 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2021-10-08 16:13:43,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:43,475 INFO L82 PathProgramCache]: Analyzing trace with hash 519479588, now seen corresponding path program 2 times [2021-10-08 16:13:43,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:43,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427031067] [2021-10-08 16:13:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:43,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 16:13:43,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:43,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427031067] [2021-10-08 16:13:43,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427031067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209239940] [2021-10-08 16:13:43,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:43,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:43,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:43,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:13:43,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:43,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-08 16:13:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209239940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:43,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2] total 8 [2021-10-08 16:13:43,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563070356] [2021-10-08 16:13:43,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:13:43,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:13:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:13:43,767 INFO L87 Difference]: Start difference. First operand 696 states and 2317 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:43,999 INFO L93 Difference]: Finished difference Result 1330 states and 4428 transitions. [2021-10-08 16:13:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:13:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 24 [2021-10-08 16:13:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:44,000 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 16:13:44,000 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 16:13:44,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:13:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 16:13:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 16:13:44,001 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) [2021-10-08 16:13:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 16:13:44,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-08 16:13:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:44,002 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 16:13:44,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 16:13:44,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 16:13:44,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:13:44,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:13:44,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:44,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:44,234 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:13:44,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:13:44,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:13:44 BasicIcfg [2021-10-08 16:13:44,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:13:44,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 16:13:44,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 16:13:44,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 16:13:44,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:22" (3/4) ... [2021-10-08 16:13:44,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 16:13:44,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 16:13:44,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 16:13:44,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 16:13:44,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-10-08 16:13:44,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 16:13:44,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:13:44,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:13:44,319 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-more-vector-add.wvr.c-witness.graphml [2021-10-08 16:13:44,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 16:13:44,320 INFO L168 Benchmark]: Toolchain (without parser) took 22768.81 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 125.4 MB in the beginning and 95.8 MB in the end (delta: 29.7 MB). Peak memory consumption was 141.3 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,321 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:13:44,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.66 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,322 INFO L168 Benchmark]: Boogie Preprocessor took 43.64 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,323 INFO L168 Benchmark]: RCFGBuilder took 798.69 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 122.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,323 INFO L168 Benchmark]: TraceAbstraction took 21427.00 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 122.2 MB in the beginning and 101.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 132.3 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,323 INFO L168 Benchmark]: Witness Printer took 81.21 ms. Allocated memory is still 262.1 MB. Free memory was 101.0 MB in the beginning and 95.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:44,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.66 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.64 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 798.69 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 122.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21427.00 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 122.2 MB in the beginning and 101.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 132.3 MB. Max. memory is 8.0 GB. * Witness Printer took 81.21 ms. Allocated memory is still 262.1 MB. Free memory was 101.0 MB in the beginning and 95.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11527.4ms, 272 PlacesBefore, 56 PlacesAfterwards, 287 TransitionsBefore, 53 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 7 FixpointIterations, 196 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 47 TrivialYvCompositions, 6 ConcurrentYvCompositions, 18 ChoiceCompositions, 320 TotalNumberOfCompositions, 7327 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3447, positive: 3237, positive conditional: 0, positive unconditional: 3237, negative: 210, negative conditional: 0, negative unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2077, positive: 2001, positive conditional: 0, positive unconditional: 2001, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2077, positive: 2001, positive conditional: 0, positive unconditional: 2001, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 76, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 191, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 191, negative conditional: 0, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3447, positive: 1236, positive conditional: 0, positive unconditional: 1236, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 2077, unknown conditional: 0, unknown unconditional: 2077] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - 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: 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: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 317 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 21234.0ms, OverallIterations: 19, TraceHistogramMax: 3, EmptinessCheckTime: 37.7ms, AutomataDifference: 2507.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11681.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 812 SDtfs, 1833 SDslu, 1306 SDs, 0 SdLazy, 675 SolverSat, 260 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 779.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 533.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3815occurred in iteration=16, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1544.7ms AutomataMinimizationTime, 19 MinimizatonAttempts, 12092 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 179.4ms SsaConstructionTime, 661.3ms SatisfiabilityAnalysisTime, 1496.4ms InterpolantComputationTime, 333 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 914 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1636 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 76/127 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 16:13:44,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...