/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-send-receive.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:44:13,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:44:13,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:44:14,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 19:44:14,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 19:44:14,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 19:44:14,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 19:44:14,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 19:44:14,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 19:44:14,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 19:44:14,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 19:44:14,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 19:44:14,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:44:14,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:44:14,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:44:14,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:44:14,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:44:14,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:44:14,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:44:14,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:44:14,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:44:14,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:44:14,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:44:14,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:44:14,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:44:14,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:44:14,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:44:14,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:44:14,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 19:44:14,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:44:14,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:44:14,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:44:14,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:44:14,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:44:14,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:44:14,155 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:44:14,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:44:14,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:44:14,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:44:14,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:44:14,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:44:14,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:44:14,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:44:14,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:44:14,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:44:14,158 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:44:14,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:44:14,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:44:14,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:44:14,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:44:14,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:44:14,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:44:14,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:44:14,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:44:14,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:44:14,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:44:14,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:44:14,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:44:14,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:44:14,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:44:14,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:44:14,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:44:14,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:44:14,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:44:14,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:44:14,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:44:14,604 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:44:14,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2021-10-13 19:44:14,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f58cae5/ce82c08053ab42cd8dd448787f55ba16/FLAG7565a314b [2021-10-13 19:44:15,340 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:44:15,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2021-10-13 19:44:15,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f58cae5/ce82c08053ab42cd8dd448787f55ba16/FLAG7565a314b [2021-10-13 19:44:15,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f58cae5/ce82c08053ab42cd8dd448787f55ba16 [2021-10-13 19:44:15,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:44:15,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:44:15,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:44:15,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:44:15,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:44:15,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:15" (1/1) ... [2021-10-13 19:44:15,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e5c376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:15, skipping insertion in model container [2021-10-13 19:44:15,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:15" (1/1) ... [2021-10-13 19:44:15,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:44:15,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:44:16,042 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-send-receive.wvr.c[2735,2748] [2021-10-13 19:44:16,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:44:16,061 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:44:16,098 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-send-receive.wvr.c[2735,2748] [2021-10-13 19:44:16,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:44:16,137 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:44:16,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16 WrapperNode [2021-10-13 19:44:16,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:44:16,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:44:16,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:44:16,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:44:16,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:44:16,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:44:16,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:44:16,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:44:16,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:44:16,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:44:16,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:44:16,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:44:16,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (1/1) ... [2021-10-13 19:44:16,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:44:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:16,351 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) [2021-10-13 19:44:16,371 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 [2021-10-13 19:44:16,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:44:16,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:44:16,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:44:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:44:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 19:44:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 19:44:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:44:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:44:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:44:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 19:44:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 19:44:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 19:44:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:44:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:44:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:44:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:44:16,434 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:44:17,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:44:17,406 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-13 19:44:17,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:17 BoogieIcfgContainer [2021-10-13 19:44:17,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:44:17,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:44:17,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:44:17,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:44:17,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:44:15" (1/3) ... [2021-10-13 19:44:17,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe4aaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:17, skipping insertion in model container [2021-10-13 19:44:17,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:16" (2/3) ... [2021-10-13 19:44:17,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe4aaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:17, skipping insertion in model container [2021-10-13 19:44:17,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:17" (3/3) ... [2021-10-13 19:44:17,420 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2021-10-13 19:44:17,426 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:44:17,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:44:17,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 19:44:17,427 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:44:17,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,509 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,509 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,510 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,511 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,517 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,518 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,518 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,525 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,525 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,526 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,527 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,527 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,527 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,528 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,531 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,531 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,544 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,544 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,545 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,545 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,545 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,545 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,545 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,548 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,553 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,554 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,554 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,554 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,558 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,561 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,561 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,561 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,562 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,570 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,570 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:17,586 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 19:44:17,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:44:17,672 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 [2021-10-13 19:44:17,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-10-13 19:44:17,704 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:44:17,725 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 137 transitions, 298 flow [2021-10-13 19:44:17,730 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 137 transitions, 298 flow [2021-10-13 19:44:17,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 137 transitions, 298 flow [2021-10-13 19:44:17,864 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-10-13 19:44:17,865 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 19:44:17,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 10/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 133 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2021-10-13 19:44:17,879 INFO L116 LiptonReduction]: Number of co-enabled transitions 1464 [2021-10-13 19:44:25,226 INFO L131 LiptonReduction]: Checked pairs total: 5168 [2021-10-13 19:44:25,227 INFO L133 LiptonReduction]: Total number of compositions: 126 [2021-10-13 19:44:25,236 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 38 transitions, 100 flow [2021-10-13 19:44:25,277 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 425 states, 398 states have (on average 3.2185929648241207) internal successors, (1281), 424 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 425 states, 398 states have (on average 3.2185929648241207) internal successors, (1281), 424 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:44:25,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:25,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:44:25,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 19573, now seen corresponding path program 1 times [2021-10-13 19:44:25,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:25,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965266403] [2021-10-13 19:44:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:25,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:25,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:25,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965266403] [2021-10-13 19:44:25,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965266403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:25,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:25,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:25,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964941601] [2021-10-13 19:44:25,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:25,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:25,558 INFO L87 Difference]: Start difference. First operand has 425 states, 398 states have (on average 3.2185929648241207) internal successors, (1281), 424 states have internal predecessors, (1281), 0 states have call successors, (0), 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) [2021-10-13 19:44:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:25,662 INFO L93 Difference]: Finished difference Result 735 states and 2215 transitions. [2021-10-13 19:44:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:25,665 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 [2021-10-13 19:44:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:25,698 INFO L225 Difference]: With dead ends: 735 [2021-10-13 19:44:25,698 INFO L226 Difference]: Without dead ends: 731 [2021-10-13 19:44:25,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-10-13 19:44:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 368. [2021-10-13 19:44:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 347 states have (on average 3.1873198847262247) internal successors, (1106), 367 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1106 transitions. [2021-10-13 19:44:25,789 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1106 transitions. Word has length 2 [2021-10-13 19:44:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:25,790 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1106 transitions. [2021-10-13 19:44:25,790 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) [2021-10-13 19:44:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1106 transitions. [2021-10-13 19:44:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:44:25,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:25,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:44:25,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:44:25,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash 607302, now seen corresponding path program 1 times [2021-10-13 19:44:25,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:25,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201418064] [2021-10-13 19:44:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:25,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:25,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:25,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201418064] [2021-10-13 19:44:25,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201418064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:25,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510064016] [2021-10-13 19:44:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:25,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:25,885 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) [2021-10-13 19:44:25,913 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 [2021-10-13 19:44:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:25,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:26,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510064016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:26,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:26,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-13 19:44:26,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604399276] [2021-10-13 19:44:26,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:26,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:26,053 INFO L87 Difference]: Start difference. First operand 368 states and 1106 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) [2021-10-13 19:44:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:26,104 INFO L93 Difference]: Finished difference Result 730 states and 2204 transitions. [2021-10-13 19:44:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:26,112 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 [2021-10-13 19:44:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:26,127 INFO L225 Difference]: With dead ends: 730 [2021-10-13 19:44:26,127 INFO L226 Difference]: Without dead ends: 730 [2021-10-13 19:44:26,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-10-13 19:44:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 367. [2021-10-13 19:44:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 347 states have (on average 3.1844380403458215) internal successors, (1105), 366 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1105 transitions. [2021-10-13 19:44:26,201 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1105 transitions. Word has length 3 [2021-10-13 19:44:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:26,202 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 1105 transitions. [2021-10-13 19:44:26,202 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) [2021-10-13 19:44:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1105 transitions. [2021-10-13 19:44:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:44:26,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:26,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:44:26,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 19:44:26,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:26,425 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:26,427 INFO L82 PathProgramCache]: Analyzing trace with hash 607286, now seen corresponding path program 1 times [2021-10-13 19:44:26,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:26,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753201083] [2021-10-13 19:44:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:26,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:26,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:26,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753201083] [2021-10-13 19:44:26,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753201083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:26,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141600474] [2021-10-13 19:44:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:26,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:26,481 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) [2021-10-13 19:44:26,501 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 [2021-10-13 19:44:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:26,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:26,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:26,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141600474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:26,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:26,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:44:26,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515918990] [2021-10-13 19:44:26,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:44:26,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:44:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:26,573 INFO L87 Difference]: Start difference. First operand 367 states and 1105 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-10-13 19:44:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:26,624 INFO L93 Difference]: Finished difference Result 1094 states and 3305 transitions. [2021-10-13 19:44:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:26,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 3 [2021-10-13 19:44:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:26,641 INFO L225 Difference]: With dead ends: 1094 [2021-10-13 19:44:26,642 INFO L226 Difference]: Without dead ends: 1094 [2021-10-13 19:44:26,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-10-13 19:44:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 368. [2021-10-13 19:44:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 348 states have (on average 3.1810344827586206) internal successors, (1107), 367 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1107 transitions. [2021-10-13 19:44:26,691 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1107 transitions. Word has length 3 [2021-10-13 19:44:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:26,691 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1107 transitions. [2021-10-13 19:44:26,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-10-13 19:44:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1107 transitions. [2021-10-13 19:44:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:44:26,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:26,693 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 19:44:26,725 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 [2021-10-13 19:44:26,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:26,907 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 18826885, now seen corresponding path program 2 times [2021-10-13 19:44:26,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:26,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522553145] [2021-10-13 19:44:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:26,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:26,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:26,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522553145] [2021-10-13 19:44:26,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522553145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:26,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694406155] [2021-10-13 19:44:26,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:26,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:26,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:26,995 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) [2021-10-13 19:44:27,014 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 [2021-10-13 19:44:27,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:44:27,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:27,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:44:27,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:27,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694406155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:27,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:27,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:44:27,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802703314] [2021-10-13 19:44:27,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:27,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:27,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:27,086 INFO L87 Difference]: Start difference. First operand 368 states and 1107 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) [2021-10-13 19:44:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:27,097 INFO L93 Difference]: Finished difference Result 367 states and 1106 transitions. [2021-10-13 19:44:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:27,098 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 [2021-10-13 19:44:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:27,101 INFO L225 Difference]: With dead ends: 367 [2021-10-13 19:44:27,101 INFO L226 Difference]: Without dead ends: 367 [2021-10-13 19:44:27,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-10-13 19:44:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2021-10-13 19:44:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 3.184971098265896) internal successors, (1102), 364 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 1102 transitions. [2021-10-13 19:44:27,118 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 1102 transitions. Word has length 4 [2021-10-13 19:44:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:27,118 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 1102 transitions. [2021-10-13 19:44:27,118 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) [2021-10-13 19:44:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 1102 transitions. [2021-10-13 19:44:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:44:27,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:27,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:44:27,157 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 [2021-10-13 19:44:27,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:27,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash 583663210, now seen corresponding path program 1 times [2021-10-13 19:44:27,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:27,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011853035] [2021-10-13 19:44:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:27,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:27,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:27,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011853035] [2021-10-13 19:44:27,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011853035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:27,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:27,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:27,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55390804] [2021-10-13 19:44:27,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:27,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:27,411 INFO L87 Difference]: Start difference. First operand 365 states and 1102 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-13 19:44:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:27,454 INFO L93 Difference]: Finished difference Result 463 states and 1366 transitions. [2021-10-13 19:44:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-10-13 19:44:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:27,459 INFO L225 Difference]: With dead ends: 463 [2021-10-13 19:44:27,460 INFO L226 Difference]: Without dead ends: 451 [2021-10-13 19:44:27,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-10-13 19:44:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 401. [2021-10-13 19:44:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 378 states have (on average 3.164021164021164) internal successors, (1196), 400 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1196 transitions. [2021-10-13 19:44:27,478 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1196 transitions. Word has length 5 [2021-10-13 19:44:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:27,478 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1196 transitions. [2021-10-13 19:44:27,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-13 19:44:27,479 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1196 transitions. [2021-10-13 19:44:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:44:27,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:27,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:27,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 19:44:27,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2023010527, now seen corresponding path program 1 times [2021-10-13 19:44:27,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:27,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017755318] [2021-10-13 19:44:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:27,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:27,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:27,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017755318] [2021-10-13 19:44:27,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017755318] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:27,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:27,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:44:27,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948484435] [2021-10-13 19:44:27,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:44:27,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:44:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:27,571 INFO L87 Difference]: Start difference. First operand 401 states and 1196 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:27,660 INFO L93 Difference]: Finished difference Result 555 states and 1625 transitions. [2021-10-13 19:44:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:44:27,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-13 19:44:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:27,666 INFO L225 Difference]: With dead ends: 555 [2021-10-13 19:44:27,666 INFO L226 Difference]: Without dead ends: 543 [2021-10-13 19:44:27,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:44:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-13 19:44:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 475. [2021-10-13 19:44:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 452 states have (on average 3.1570796460176993) internal successors, (1427), 474 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1427 transitions. [2021-10-13 19:44:27,686 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1427 transitions. Word has length 8 [2021-10-13 19:44:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:27,688 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 1427 transitions. [2021-10-13 19:44:27,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1427 transitions. [2021-10-13 19:44:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:44:27,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:27,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:27,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 19:44:27,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2023010528, now seen corresponding path program 1 times [2021-10-13 19:44:27,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:27,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692098578] [2021-10-13 19:44:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:27,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:27,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:27,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692098578] [2021-10-13 19:44:27,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692098578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:27,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:27,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:27,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036696899] [2021-10-13 19:44:27,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:27,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:27,755 INFO L87 Difference]: Start difference. First operand 475 states and 1427 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:27,778 INFO L93 Difference]: Finished difference Result 395 states and 1171 transitions. [2021-10-13 19:44:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-13 19:44:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:27,782 INFO L225 Difference]: With dead ends: 395 [2021-10-13 19:44:27,782 INFO L226 Difference]: Without dead ends: 322 [2021-10-13 19:44:27,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-13 19:44:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-13 19:44:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 309 states have (on average 3.1877022653721685) internal successors, (985), 321 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 985 transitions. [2021-10-13 19:44:27,826 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 985 transitions. Word has length 8 [2021-10-13 19:44:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:27,826 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 985 transitions. [2021-10-13 19:44:27,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 985 transitions. [2021-10-13 19:44:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:44:27,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:27,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:27,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 19:44:27,837 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:27,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1514223632, now seen corresponding path program 1 times [2021-10-13 19:44:27,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:27,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915491580] [2021-10-13 19:44:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:27,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:27,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:27,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915491580] [2021-10-13 19:44:27,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915491580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:27,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106373476] [2021-10-13 19:44:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:27,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:27,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:27,972 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) [2021-10-13 19:44:27,981 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 [2021-10-13 19:44:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:44:28,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:28,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106373476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:28,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:28,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2021-10-13 19:44:28,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364653341] [2021-10-13 19:44:28,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:28,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:44:28,216 INFO L87 Difference]: Start difference. First operand 322 states and 985 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:28,270 INFO L93 Difference]: Finished difference Result 194 states and 599 transitions. [2021-10-13 19:44:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 19:44:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:28,273 INFO L225 Difference]: With dead ends: 194 [2021-10-13 19:44:28,273 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 19:44:28,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:44:28,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 19:44:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-13 19:44:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 3.033333333333333) internal successors, (455), 151 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 455 transitions. [2021-10-13 19:44:28,280 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 455 transitions. Word has length 9 [2021-10-13 19:44:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:28,281 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 455 transitions. [2021-10-13 19:44:28,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 455 transitions. [2021-10-13 19:44:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:28,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:28,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:28,323 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 [2021-10-13 19:44:28,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:28,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash -137335019, now seen corresponding path program 1 times [2021-10-13 19:44:28,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:28,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824583973] [2021-10-13 19:44:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:28,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:28,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:28,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824583973] [2021-10-13 19:44:28,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824583973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:28,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:28,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:44:28,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983309352] [2021-10-13 19:44:28,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:28,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:28,540 INFO L87 Difference]: Start difference. First operand 152 states and 455 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:28,549 INFO L93 Difference]: Finished difference Result 248 states and 731 transitions. [2021-10-13 19:44:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2021-10-13 19:44:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:28,552 INFO L225 Difference]: With dead ends: 248 [2021-10-13 19:44:28,552 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 19:44:28,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 19:44:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 188. [2021-10-13 19:44:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 3.157608695652174) internal successors, (581), 187 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 581 transitions. [2021-10-13 19:44:28,562 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 581 transitions. Word has length 11 [2021-10-13 19:44:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:28,563 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 581 transitions. [2021-10-13 19:44:28,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 581 transitions. [2021-10-13 19:44:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:28,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:28,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:28,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 19:44:28,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash -137307119, now seen corresponding path program 1 times [2021-10-13 19:44:28,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:28,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620443284] [2021-10-13 19:44:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:28,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:28,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:28,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620443284] [2021-10-13 19:44:28,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620443284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:28,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924228556] [2021-10-13 19:44:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:28,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:28,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:28,858 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) [2021-10-13 19:44:28,877 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 [2021-10-13 19:44:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:28,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:44:28,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:29,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924228556] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:29,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:29,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-13 19:44:29,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253925973] [2021-10-13 19:44:29,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:29,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:44:29,044 INFO L87 Difference]: Start difference. First operand 188 states and 581 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:29,096 INFO L93 Difference]: Finished difference Result 296 states and 941 transitions. [2021-10-13 19:44:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2021-10-13 19:44:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:29,100 INFO L225 Difference]: With dead ends: 296 [2021-10-13 19:44:29,100 INFO L226 Difference]: Without dead ends: 296 [2021-10-13 19:44:29,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:44:29,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-13 19:44:29,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 260. [2021-10-13 19:44:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 3.34765625) internal successors, (857), 259 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 857 transitions. [2021-10-13 19:44:29,115 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 857 transitions. Word has length 11 [2021-10-13 19:44:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:29,116 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 857 transitions. [2021-10-13 19:44:29,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 857 transitions. [2021-10-13 19:44:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:29,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:29,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:29,163 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 [2021-10-13 19:44:29,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:29,331 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:29,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:29,331 INFO L82 PathProgramCache]: Analyzing trace with hash -137307118, now seen corresponding path program 1 times [2021-10-13 19:44:29,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:29,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168503535] [2021-10-13 19:44:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:29,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:29,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:29,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168503535] [2021-10-13 19:44:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168503535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:29,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:29,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:44:29,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029314798] [2021-10-13 19:44:29,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:29,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:44:29,403 INFO L87 Difference]: Start difference. First operand 260 states and 857 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:29,454 INFO L93 Difference]: Finished difference Result 260 states and 821 transitions. [2021-10-13 19:44:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2021-10-13 19:44:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:29,458 INFO L225 Difference]: With dead ends: 260 [2021-10-13 19:44:29,458 INFO L226 Difference]: Without dead ends: 260 [2021-10-13 19:44:29,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:44:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-13 19:44:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-10-13 19:44:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 3.20703125) internal successors, (821), 259 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 821 transitions. [2021-10-13 19:44:29,472 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 821 transitions. Word has length 11 [2021-10-13 19:44:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:29,473 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 821 transitions. [2021-10-13 19:44:29,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-13 19:44:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 821 transitions. [2021-10-13 19:44:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:44:29,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:29,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:29,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 19:44:29,475 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash 38451458, now seen corresponding path program 1 times [2021-10-13 19:44:29,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:29,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224246832] [2021-10-13 19:44:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:29,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:29,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:29,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224246832] [2021-10-13 19:44:29,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224246832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:29,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:29,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 19:44:29,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783570230] [2021-10-13 19:44:29,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:44:29,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:44:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:29,578 INFO L87 Difference]: Start difference. First operand 260 states and 821 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:29,689 INFO L93 Difference]: Finished difference Result 320 states and 1021 transitions. [2021-10-13 19:44:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:44:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:29,693 INFO L225 Difference]: With dead ends: 320 [2021-10-13 19:44:29,693 INFO L226 Difference]: Without dead ends: 320 [2021-10-13 19:44:29,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:44:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-10-13 19:44:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 260. [2021-10-13 19:44:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 3.20703125) internal successors, (821), 259 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 821 transitions. [2021-10-13 19:44:29,711 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 821 transitions. Word has length 12 [2021-10-13 19:44:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:29,712 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 821 transitions. [2021-10-13 19:44:29,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 821 transitions. [2021-10-13 19:44:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:44:29,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:29,714 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:29,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 19:44:29,714 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1191861975, now seen corresponding path program 1 times [2021-10-13 19:44:29,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:29,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052267144] [2021-10-13 19:44:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:29,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:29,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052267144] [2021-10-13 19:44:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052267144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:29,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881628528] [2021-10-13 19:44:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:29,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:29,783 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) [2021-10-13 19:44:29,795 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 [2021-10-13 19:44:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:29,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:44:29,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:44:29,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881628528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:29,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:29,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2021-10-13 19:44:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360711328] [2021-10-13 19:44:29,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:29,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:29,929 INFO L87 Difference]: Start difference. First operand 260 states and 821 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2021-10-13 19:44:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:29,975 INFO L93 Difference]: Finished difference Result 524 states and 1661 transitions. [2021-10-13 19:44:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 13 [2021-10-13 19:44:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:29,981 INFO L225 Difference]: With dead ends: 524 [2021-10-13 19:44:29,981 INFO L226 Difference]: Without dead ends: 488 [2021-10-13 19:44:29,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-13 19:44:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 416. [2021-10-13 19:44:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 3.3325242718446604) internal successors, (1373), 415 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1373 transitions. [2021-10-13 19:44:30,008 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1373 transitions. Word has length 13 [2021-10-13 19:44:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:30,008 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1373 transitions. [2021-10-13 19:44:30,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2021-10-13 19:44:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1373 transitions. [2021-10-13 19:44:30,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:44:30,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:30,011 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:30,052 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 [2021-10-13 19:44:30,225 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,SelfDestructingSolverStorable12 [2021-10-13 19:44:30,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1278822384, now seen corresponding path program 1 times [2021-10-13 19:44:30,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:30,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309269201] [2021-10-13 19:44:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:30,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:30,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:30,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309269201] [2021-10-13 19:44:30,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309269201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:30,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760726919] [2021-10-13 19:44:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:30,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:30,366 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) [2021-10-13 19:44:30,388 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 [2021-10-13 19:44:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:30,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:44:30,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:30,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760726919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:30,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:30,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-13 19:44:30,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258238868] [2021-10-13 19:44:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:44:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:44:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:44:30,601 INFO L87 Difference]: Start difference. First operand 416 states and 1373 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:30,962 INFO L93 Difference]: Finished difference Result 770 states and 2276 transitions. [2021-10-13 19:44:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:44:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-13 19:44:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:30,967 INFO L225 Difference]: With dead ends: 770 [2021-10-13 19:44:30,968 INFO L226 Difference]: Without dead ends: 417 [2021-10-13 19:44:30,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 266.7ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:44:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-10-13 19:44:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-10-13 19:44:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 413 states have (on average 3.3268765133171914) internal successors, (1374), 416 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1374 transitions. [2021-10-13 19:44:30,987 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1374 transitions. Word has length 15 [2021-10-13 19:44:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:30,988 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 1374 transitions. [2021-10-13 19:44:30,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1374 transitions. [2021-10-13 19:44:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:44:30,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:30,989 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:31,032 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 [2021-10-13 19:44:31,201 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,SelfDestructingSolverStorable13 [2021-10-13 19:44:31,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1683536863, now seen corresponding path program 2 times [2021-10-13 19:44:31,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:31,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410589097] [2021-10-13 19:44:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:31,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:31,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:31,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410589097] [2021-10-13 19:44:31,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410589097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:31,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258422342] [2021-10-13 19:44:31,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:31,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:31,370 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) [2021-10-13 19:44:31,375 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 [2021-10-13 19:44:31,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:31,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:31,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 19:44:31,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:44:31,541 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 19:44:31,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 587 treesize of output 539 [2021-10-13 19:44:31,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:44:31,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:44:31,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258422342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:32,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 12 [2021-10-13 19:44:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117810878] [2021-10-13 19:44:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:44:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:44:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:44:32,234 INFO L87 Difference]: Start difference. First operand 417 states and 1374 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:32,895 INFO L93 Difference]: Finished difference Result 1101 states and 3601 transitions. [2021-10-13 19:44:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:44:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2021-10-13 19:44:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:32,908 INFO L225 Difference]: With dead ends: 1101 [2021-10-13 19:44:32,908 INFO L226 Difference]: Without dead ends: 1101 [2021-10-13 19:44:32,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 421.6ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:44:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-10-13 19:44:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 827. [2021-10-13 19:44:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 823 states have (on average 3.3985419198055893) internal successors, (2797), 826 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2797 transitions. [2021-10-13 19:44:32,956 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2797 transitions. Word has length 16 [2021-10-13 19:44:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:32,956 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 2797 transitions. [2021-10-13 19:44:32,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2797 transitions. [2021-10-13 19:44:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:44:32,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:32,959 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:33,003 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 [2021-10-13 19:44:33,174 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,SelfDestructingSolverStorable14 [2021-10-13 19:44:33,174 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1683536864, now seen corresponding path program 1 times [2021-10-13 19:44:33,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:33,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479151631] [2021-10-13 19:44:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:33,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:33,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:33,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479151631] [2021-10-13 19:44:33,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479151631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:33,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601314036] [2021-10-13 19:44:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:33,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:33,331 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) [2021-10-13 19:44:33,335 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 [2021-10-13 19:44:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:33,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:44:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:33,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601314036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:33,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:33,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 19:44:33,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027115820] [2021-10-13 19:44:33,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:44:33,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:44:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:44:33,624 INFO L87 Difference]: Start difference. First operand 827 states and 2797 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:33,875 INFO L93 Difference]: Finished difference Result 1393 states and 4542 transitions. [2021-10-13 19:44:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:44:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 16 [2021-10-13 19:44:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:33,892 INFO L225 Difference]: With dead ends: 1393 [2021-10-13 19:44:33,892 INFO L226 Difference]: Without dead ends: 1373 [2021-10-13 19:44:33,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:44:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-10-13 19:44:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1071. [2021-10-13 19:44:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1067 states have (on average 3.3411433926897844) internal successors, (3565), 1070 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 3565 transitions. [2021-10-13 19:44:33,942 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 3565 transitions. Word has length 16 [2021-10-13 19:44:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:33,943 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 3565 transitions. [2021-10-13 19:44:33,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 3565 transitions. [2021-10-13 19:44:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:44:33,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:33,945 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:33,985 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 [2021-10-13 19:44:34,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:34,164 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1687500523, now seen corresponding path program 3 times [2021-10-13 19:44:34,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:34,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209401852] [2021-10-13 19:44:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:34,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:34,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:34,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209401852] [2021-10-13 19:44:34,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209401852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:34,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732554891] [2021-10-13 19:44:34,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:44:34,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:34,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:34,527 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) [2021-10-13 19:44:34,530 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 [2021-10-13 19:44:34,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:44:34,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:34,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:44:34,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:34,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:44:34,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:34,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:35,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732554891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:35,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:35,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-13 19:44:35,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528188924] [2021-10-13 19:44:35,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:44:35,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:44:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:44:35,152 INFO L87 Difference]: Start difference. First operand 1071 states and 3565 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:39,348 INFO L93 Difference]: Finished difference Result 3233 states and 10415 transitions. [2021-10-13 19:44:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 19:44:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:44:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:39,380 INFO L225 Difference]: With dead ends: 3233 [2021-10-13 19:44:39,380 INFO L226 Difference]: Without dead ends: 2999 [2021-10-13 19:44:39,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 3409.3ms TimeCoverageRelationStatistics Valid=514, Invalid=2348, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:44:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2021-10-13 19:44:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2095. [2021-10-13 19:44:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2091 states have (on average 3.5906264945002393) internal successors, (7508), 2094 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 7508 transitions. [2021-10-13 19:44:39,497 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 7508 transitions. Word has length 16 [2021-10-13 19:44:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:39,498 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 7508 transitions. [2021-10-13 19:44:39,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 7508 transitions. [2021-10-13 19:44:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:44:39,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:39,501 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:39,544 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 [2021-10-13 19:44:39,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 19:44:39,717 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:39,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1687500524, now seen corresponding path program 2 times [2021-10-13 19:44:39,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:39,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423565706] [2021-10-13 19:44:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:39,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:39,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:39,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423565706] [2021-10-13 19:44:39,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423565706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:39,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587249053] [2021-10-13 19:44:39,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:39,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:39,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:39,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:39,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 19:44:39,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:39,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:40,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 19:44:40,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:40,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:44:40,210 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:44:40,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:44:40,310 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:44:40,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:44:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:40,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587249053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:40,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:40,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2021-10-13 19:44:40,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350078107] [2021-10-13 19:44:40,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:44:40,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:44:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:44:40,591 INFO L87 Difference]: Start difference. First operand 2095 states and 7508 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:41,633 INFO L93 Difference]: Finished difference Result 2548 states and 8895 transitions. [2021-10-13 19:44:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:44:41,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2021-10-13 19:44:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:41,657 INFO L225 Difference]: With dead ends: 2548 [2021-10-13 19:44:41,658 INFO L226 Difference]: Without dead ends: 2498 [2021-10-13 19:44:41,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 646.9ms TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:44:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2021-10-13 19:44:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2263. [2021-10-13 19:44:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2259 states have (on average 3.562195661797255) internal successors, (8047), 2262 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 8047 transitions. [2021-10-13 19:44:41,758 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 8047 transitions. Word has length 16 [2021-10-13 19:44:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:41,758 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 8047 transitions. [2021-10-13 19:44:41,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 8047 transitions. [2021-10-13 19:44:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:44:41,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:41,762 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:41,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:44:41,976 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1585600423, now seen corresponding path program 2 times [2021-10-13 19:44:41,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:41,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770347140] [2021-10-13 19:44:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:41,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:42,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:42,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770347140] [2021-10-13 19:44:42,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770347140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:42,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:42,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:44:42,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128895183] [2021-10-13 19:44:42,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:42,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:42,077 INFO L87 Difference]: Start difference. First operand 2263 states and 8047 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-13 19:44:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:42,098 INFO L93 Difference]: Finished difference Result 2485 states and 8147 transitions. [2021-10-13 19:44:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:42,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 16 [2021-10-13 19:44:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:42,128 INFO L225 Difference]: With dead ends: 2485 [2021-10-13 19:44:42,128 INFO L226 Difference]: Without dead ends: 2337 [2021-10-13 19:44:42,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2021-10-13 19:44:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2163. [2021-10-13 19:44:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2157 states have (on average 3.4070468242929994) internal successors, (7349), 2162 states have internal predecessors, (7349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 7349 transitions. [2021-10-13 19:44:42,213 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 7349 transitions. Word has length 16 [2021-10-13 19:44:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:42,213 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 7349 transitions. [2021-10-13 19:44:42,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-13 19:44:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 7349 transitions. [2021-10-13 19:44:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:42,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:42,216 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:42,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 19:44:42,216 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -968643332, now seen corresponding path program 4 times [2021-10-13 19:44:42,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:42,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073718729] [2021-10-13 19:44:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:42,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:44:42,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:42,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073718729] [2021-10-13 19:44:42,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073718729] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:42,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168463913] [2021-10-13 19:44:42,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:44:42,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:42,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:42,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:42,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 19:44:42,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:44:42,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:42,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:44:42,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:42,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168463913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:42,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:42,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 10 [2021-10-13 19:44:42,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245878286] [2021-10-13 19:44:42,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:44:42,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:44:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:44:42,733 INFO L87 Difference]: Start difference. First operand 2163 states and 7349 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:42,997 INFO L93 Difference]: Finished difference Result 3179 states and 10498 transitions. [2021-10-13 19:44:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:44:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:44:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:43,014 INFO L225 Difference]: With dead ends: 3179 [2021-10-13 19:44:43,015 INFO L226 Difference]: Without dead ends: 3179 [2021-10-13 19:44:43,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:44:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-10-13 19:44:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2341. [2021-10-13 19:44:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2335 states have (on average 3.452676659528908) internal successors, (8062), 2340 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 8062 transitions. [2021-10-13 19:44:43,120 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 8062 transitions. Word has length 17 [2021-10-13 19:44:43,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:43,120 INFO L470 AbstractCegarLoop]: Abstraction has 2341 states and 8062 transitions. [2021-10-13 19:44:43,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 8062 transitions. [2021-10-13 19:44:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:43,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:43,123 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:43,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:43,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:43,340 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:43,341 INFO L82 PathProgramCache]: Analyzing trace with hash 778454452, now seen corresponding path program 1 times [2021-10-13 19:44:43,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:43,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927230071] [2021-10-13 19:44:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:43,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:43,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:43,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927230071] [2021-10-13 19:44:43,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927230071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:43,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393209315] [2021-10-13 19:44:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:43,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:43,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:43,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 19:44:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:44:43,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:44,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:44:44,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:44,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:44,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:44,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393209315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:44,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:44,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:44:44,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512707010] [2021-10-13 19:44:44,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:44:44,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:44:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:44:44,445 INFO L87 Difference]: Start difference. First operand 2341 states and 8062 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:46,905 INFO L93 Difference]: Finished difference Result 2824 states and 8644 transitions. [2021-10-13 19:44:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:44:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:44:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:46,916 INFO L225 Difference]: With dead ends: 2824 [2021-10-13 19:44:46,916 INFO L226 Difference]: Without dead ends: 2614 [2021-10-13 19:44:46,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1982.3ms TimeCoverageRelationStatistics Valid=306, Invalid=1586, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:44:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-10-13 19:44:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1783. [2021-10-13 19:44:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1777 states have (on average 3.4074282498593136) internal successors, (6055), 1782 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 6055 transitions. [2021-10-13 19:44:47,016 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 6055 transitions. Word has length 17 [2021-10-13 19:44:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:47,017 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 6055 transitions. [2021-10-13 19:44:47,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 6055 transitions. [2021-10-13 19:44:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:47,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:47,021 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:47,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:47,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 19:44:47,237 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash 778454453, now seen corresponding path program 1 times [2021-10-13 19:44:47,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:47,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563783886] [2021-10-13 19:44:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:47,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:47,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:47,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563783886] [2021-10-13 19:44:47,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563783886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:47,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092296544] [2021-10-13 19:44:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:47,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:47,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:47,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:47,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 19:44:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:47,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:44:47,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:47,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:44:47,843 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:44:47,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:44:47,980 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:44:47,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:44:48,240 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 19:44:48,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-10-13 19:44:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:48,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092296544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:48,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:48,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-13 19:44:48,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905301006] [2021-10-13 19:44:48,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:44:48,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:44:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:44:48,491 INFO L87 Difference]: Start difference. First operand 1783 states and 6055 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:44:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:49,402 INFO L93 Difference]: Finished difference Result 2086 states and 6950 transitions. [2021-10-13 19:44:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:44:49,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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 17 [2021-10-13 19:44:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:49,412 INFO L225 Difference]: With dead ends: 2086 [2021-10-13 19:44:49,412 INFO L226 Difference]: Without dead ends: 2036 [2021-10-13 19:44:49,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 753.2ms TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:44:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-10-13 19:44:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1783. [2021-10-13 19:44:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1777 states have (on average 3.401800787844682) internal successors, (6045), 1782 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 6045 transitions. [2021-10-13 19:44:49,474 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 6045 transitions. Word has length 17 [2021-10-13 19:44:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:49,474 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 6045 transitions. [2021-10-13 19:44:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:44:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 6045 transitions. [2021-10-13 19:44:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:49,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:49,477 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:49,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:49,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:49,692 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 782418113, now seen corresponding path program 2 times [2021-10-13 19:44:49,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926246536] [2021-10-13 19:44:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:49,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:49,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:49,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926246536] [2021-10-13 19:44:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926246536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:49,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032841599] [2021-10-13 19:44:49,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:49,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:49,840 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:49,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 19:44:50,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:50,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:50,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 19:44:50,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:50,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:44:50,344 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:44:50,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:44:50,468 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:44:50,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:44:50,748 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-13 19:44:50,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-13 19:44:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032841599] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:50,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-13 19:44:50,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162409601] [2021-10-13 19:44:50,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:44:50,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:50,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:44:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:44:50,997 INFO L87 Difference]: Start difference. First operand 1783 states and 6045 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:44:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:51,947 INFO L93 Difference]: Finished difference Result 2362 states and 7801 transitions. [2021-10-13 19:44:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:44:51,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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 17 [2021-10-13 19:44:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:51,960 INFO L225 Difference]: With dead ends: 2362 [2021-10-13 19:44:51,961 INFO L226 Difference]: Without dead ends: 2292 [2021-10-13 19:44:51,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 754.1ms TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:44:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-10-13 19:44:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1815. [2021-10-13 19:44:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1809 states have (on average 3.4599226091763406) internal successors, (6259), 1814 states have internal predecessors, (6259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 6259 transitions. [2021-10-13 19:44:52,043 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 6259 transitions. Word has length 17 [2021-10-13 19:44:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:52,043 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 6259 transitions. [2021-10-13 19:44:52,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:44:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 6259 transitions. [2021-10-13 19:44:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:52,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:52,049 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:52,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:52,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:52,263 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:52,264 INFO L82 PathProgramCache]: Analyzing trace with hash 650040053, now seen corresponding path program 3 times [2021-10-13 19:44:52,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:52,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264498057] [2021-10-13 19:44:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:52,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:52,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:52,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264498057] [2021-10-13 19:44:52,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264498057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:52,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653431810] [2021-10-13 19:44:52,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:44:52,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:52,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:52,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:52,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 19:44:52,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:44:52,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:52,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:44:52,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:52,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:44:52,970 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:44:52,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:44:53,184 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:44:53,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:44:53,878 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 19:44:53,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 67 [2021-10-13 19:44:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:53,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653431810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:53,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:53,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 16 [2021-10-13 19:44:53,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121024389] [2021-10-13 19:44:53,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:44:53,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:44:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:44:53,956 INFO L87 Difference]: Start difference. First operand 1815 states and 6259 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2021-10-13 19:44:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:55,418 INFO L93 Difference]: Finished difference Result 2343 states and 7713 transitions. [2021-10-13 19:44:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:44:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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 17 [2021-10-13 19:44:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:55,425 INFO L225 Difference]: With dead ends: 2343 [2021-10-13 19:44:55,425 INFO L226 Difference]: Without dead ends: 2235 [2021-10-13 19:44:55,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1090.8ms TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:44:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-10-13 19:44:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1851. [2021-10-13 19:44:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1845 states have (on average 3.4742547425474255) internal successors, (6410), 1850 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 6410 transitions. [2021-10-13 19:44:55,518 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 6410 transitions. Word has length 17 [2021-10-13 19:44:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:55,519 INFO L470 AbstractCegarLoop]: Abstraction has 1851 states and 6410 transitions. [2021-10-13 19:44:55,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2021-10-13 19:44:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 6410 transitions. [2021-10-13 19:44:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:55,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:55,521 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:55,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:55,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 19:44:55,735 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash 777055732, now seen corresponding path program 2 times [2021-10-13 19:44:55,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290393545] [2021-10-13 19:44:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:56,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:56,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290393545] [2021-10-13 19:44:56,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290393545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:56,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586469553] [2021-10-13 19:44:56,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:56,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:56,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:56,367 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:56,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 19:44:56,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:56,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:56,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:44:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:56,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:44:56,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:57,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:44:57,255 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:44:57,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-13 19:44:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:57,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586469553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:57,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:57,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-13 19:44:57,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938595247] [2021-10-13 19:44:57,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:44:57,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:57,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:44:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:44:57,441 INFO L87 Difference]: Start difference. First operand 1851 states and 6410 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:58,971 INFO L93 Difference]: Finished difference Result 2167 states and 7273 transitions. [2021-10-13 19:44:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:44:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:44:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:58,977 INFO L225 Difference]: With dead ends: 2167 [2021-10-13 19:44:58,977 INFO L226 Difference]: Without dead ends: 2167 [2021-10-13 19:44:58,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1425.3ms TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:44:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-10-13 19:44:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1995. [2021-10-13 19:44:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1989 states have (on average 3.439416792357969) internal successors, (6841), 1994 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 6841 transitions. [2021-10-13 19:44:59,038 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 6841 transitions. Word has length 17 [2021-10-13 19:44:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:59,038 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 6841 transitions. [2021-10-13 19:44:59,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 6841 transitions. [2021-10-13 19:44:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:44:59,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:59,040 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:59,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:59,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 19:44:59,256 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:44:59,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash 772913512, now seen corresponding path program 3 times [2021-10-13 19:44:59,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:59,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108236579] [2021-10-13 19:44:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:59,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:59,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:59,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108236579] [2021-10-13 19:44:59,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108236579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:59,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008988724] [2021-10-13 19:44:59,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:44:59,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:59,939 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:59,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 19:45:00,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:45:00,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:00,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:45:00,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:00,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:45:00,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:00,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:00,895 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:00,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:45:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:00,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008988724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:00,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:00,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-13 19:45:00,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233939593] [2021-10-13 19:45:00,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:45:00,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:45:00,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:45:00,963 INFO L87 Difference]: Start difference. First operand 1995 states and 6841 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:05,821 INFO L93 Difference]: Finished difference Result 3991 states and 12967 transitions. [2021-10-13 19:45:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:45:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:45:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:05,867 INFO L225 Difference]: With dead ends: 3991 [2021-10-13 19:45:05,868 INFO L226 Difference]: Without dead ends: 3981 [2021-10-13 19:45:05,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 3984.5ms TimeCoverageRelationStatistics Valid=430, Invalid=2222, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:45:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2021-10-13 19:45:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 2599. [2021-10-13 19:45:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2593 states have (on average 3.615888931739298) internal successors, (9376), 2598 states have internal predecessors, (9376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 9376 transitions. [2021-10-13 19:45:06,138 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 9376 transitions. Word has length 17 [2021-10-13 19:45:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:06,139 INFO L470 AbstractCegarLoop]: Abstraction has 2599 states and 9376 transitions. [2021-10-13 19:45:06,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 9376 transitions. [2021-10-13 19:45:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:06,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:06,150 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:06,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:06,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:06,364 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash 772913513, now seen corresponding path program 4 times [2021-10-13 19:45:06,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:06,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550938002] [2021-10-13 19:45:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:06,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:06,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:06,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550938002] [2021-10-13 19:45:06,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550938002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:06,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4673019] [2021-10-13 19:45:06,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:06,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:06,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:06,738 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:06,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 19:45:07,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:07,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:07,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 19:45:07,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:07,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 19:45:07,488 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:45:07,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 46 [2021-10-13 19:45:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:07,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4673019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:07,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:07,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 19:45:07,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038112328] [2021-10-13 19:45:07,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:45:07,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:45:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:45:07,521 INFO L87 Difference]: Start difference. First operand 2599 states and 9376 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:45:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:07,872 INFO L93 Difference]: Finished difference Result 2926 states and 10374 transitions. [2021-10-13 19:45:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:07,872 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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 17 [2021-10-13 19:45:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:07,880 INFO L225 Difference]: With dead ends: 2926 [2021-10-13 19:45:07,880 INFO L226 Difference]: Without dead ends: 2926 [2021-10-13 19:45:07,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 264.5ms TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:45:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-10-13 19:45:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2695. [2021-10-13 19:45:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2689 states have (on average 3.6024544440312383) internal successors, (9687), 2694 states have internal predecessors, (9687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 9687 transitions. [2021-10-13 19:45:07,965 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 9687 transitions. Word has length 17 [2021-10-13 19:45:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:07,965 INFO L470 AbstractCegarLoop]: Abstraction has 2695 states and 9687 transitions. [2021-10-13 19:45:07,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-10-13 19:45:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 9687 transitions. [2021-10-13 19:45:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:07,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:07,968 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:08,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:08,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 19:45:08,182 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 42373571, now seen corresponding path program 4 times [2021-10-13 19:45:08,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:08,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149691320] [2021-10-13 19:45:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:08,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:08,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:08,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149691320] [2021-10-13 19:45:08,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149691320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:08,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135737851] [2021-10-13 19:45:08,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:08,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:08,292 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:08,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 19:45:08,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:08,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:08,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:45:08,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:08,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135737851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:08,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:08,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 6 [2021-10-13 19:45:08,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410815719] [2021-10-13 19:45:08,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:45:08,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:45:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:45:08,812 INFO L87 Difference]: Start difference. First operand 2695 states and 9687 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:09,038 INFO L93 Difference]: Finished difference Result 3189 states and 11097 transitions. [2021-10-13 19:45:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:45:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2021-10-13 19:45:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:09,058 INFO L225 Difference]: With dead ends: 3189 [2021-10-13 19:45:09,059 INFO L226 Difference]: Without dead ends: 3169 [2021-10-13 19:45:09,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:45:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2021-10-13 19:45:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 2673. [2021-10-13 19:45:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2667 states have (on average 3.622047244094488) internal successors, (9660), 2672 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 9660 transitions. [2021-10-13 19:45:09,200 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 9660 transitions. Word has length 18 [2021-10-13 19:45:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:09,201 INFO L470 AbstractCegarLoop]: Abstraction has 2673 states and 9660 transitions. [2021-10-13 19:45:09,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 9660 transitions. [2021-10-13 19:45:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:09,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:09,204 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:09,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:09,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 19:45:09,419 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:09,420 INFO L82 PathProgramCache]: Analyzing trace with hash -86040829, now seen corresponding path program 5 times [2021-10-13 19:45:09,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:09,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133928450] [2021-10-13 19:45:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:09,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:09,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:09,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133928450] [2021-10-13 19:45:09,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133928450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:09,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566000632] [2021-10-13 19:45:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:45:09,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:09,625 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:09,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 19:45:10,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:45:10,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:10,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:45:10,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:10,383 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:45:10,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2021-10-13 19:45:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:10,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566000632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:10,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:10,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-13 19:45:10,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196471507] [2021-10-13 19:45:10,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:45:10,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:45:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:45:10,418 INFO L87 Difference]: Start difference. First operand 2673 states and 9660 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:10,761 INFO L93 Difference]: Finished difference Result 3135 states and 10975 transitions. [2021-10-13 19:45:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:45:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:45:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:10,770 INFO L225 Difference]: With dead ends: 3135 [2021-10-13 19:45:10,770 INFO L226 Difference]: Without dead ends: 3111 [2021-10-13 19:45:10,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 271.9ms TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:45:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2021-10-13 19:45:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2635. [2021-10-13 19:45:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2629 states have (on average 3.6124001521491063) internal successors, (9497), 2634 states have internal predecessors, (9497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 9497 transitions. [2021-10-13 19:45:10,864 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 9497 transitions. Word has length 18 [2021-10-13 19:45:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:10,864 INFO L470 AbstractCegarLoop]: Abstraction has 2635 states and 9497 transitions. [2021-10-13 19:45:10,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 9497 transitions. [2021-10-13 19:45:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:10,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:10,867 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:10,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:11,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 19:45:11,081 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash 40974851, now seen corresponding path program 6 times [2021-10-13 19:45:11,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:11,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248032182] [2021-10-13 19:45:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:11,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:11,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:11,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248032182] [2021-10-13 19:45:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248032182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:11,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753419715] [2021-10-13 19:45:11,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:45:11,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:11,241 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:11,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 19:45:11,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:45:11,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:11,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 19:45:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:11,898 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:45:11,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-13 19:45:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:11,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753419715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:11,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:11,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-13 19:45:11,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920797305] [2021-10-13 19:45:11,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:45:11,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:45:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:45:11,956 INFO L87 Difference]: Start difference. First operand 2635 states and 9497 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:12,524 INFO L93 Difference]: Finished difference Result 3217 states and 11235 transitions. [2021-10-13 19:45:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:45:12,525 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:45:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:12,533 INFO L225 Difference]: With dead ends: 3217 [2021-10-13 19:45:12,533 INFO L226 Difference]: Without dead ends: 3217 [2021-10-13 19:45:12,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 363.0ms TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:45:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-10-13 19:45:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 2565. [2021-10-13 19:45:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2559 states have (on average 3.6252442360296993) internal successors, (9277), 2564 states have internal predecessors, (9277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 9277 transitions. [2021-10-13 19:45:12,631 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 9277 transitions. Word has length 18 [2021-10-13 19:45:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:12,631 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 9277 transitions. [2021-10-13 19:45:12,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 9277 transitions. [2021-10-13 19:45:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:12,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:12,634 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:12,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:12,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:12,849 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:12,849 INFO L82 PathProgramCache]: Analyzing trace with hash 36832631, now seen corresponding path program 7 times [2021-10-13 19:45:12,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:12,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177770814] [2021-10-13 19:45:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:12,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:13,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:13,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177770814] [2021-10-13 19:45:13,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177770814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598987018] [2021-10-13 19:45:13,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:45:13,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:13,528 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:13,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 19:45:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:13,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 19:45:13,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:14,276 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:14,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-13 19:45:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:14,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598987018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:14,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:14,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-13 19:45:14,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428225694] [2021-10-13 19:45:14,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:45:14,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:45:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:45:14,313 INFO L87 Difference]: Start difference. First operand 2565 states and 9277 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:15,497 INFO L93 Difference]: Finished difference Result 3291 states and 11349 transitions. [2021-10-13 19:45:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:45:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-10-13 19:45:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:15,509 INFO L225 Difference]: With dead ends: 3291 [2021-10-13 19:45:15,509 INFO L226 Difference]: Without dead ends: 3291 [2021-10-13 19:45:15,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1037.8ms TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:45:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-10-13 19:45:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2467. [2021-10-13 19:45:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2461 states have (on average 3.6273872409589596) internal successors, (8927), 2466 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 8927 transitions. [2021-10-13 19:45:15,578 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 8927 transitions. Word has length 18 [2021-10-13 19:45:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 8927 transitions. [2021-10-13 19:45:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 8927 transitions. [2021-10-13 19:45:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 19:45:15,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:15,581 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:15,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:15,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:15,796 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1141678338, now seen corresponding path program 5 times [2021-10-13 19:45:15,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:15,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177379534] [2021-10-13 19:45:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:15,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:15,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:15,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177379534] [2021-10-13 19:45:15,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177379534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:15,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045692501] [2021-10-13 19:45:15,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:45:15,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:15,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:15,887 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:15,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 19:45:16,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:45:16,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:16,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:45:16,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 19:45:16,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045692501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:16,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:16,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-10-13 19:45:16,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648834403] [2021-10-13 19:45:16,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:45:16,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:45:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:16,337 INFO L87 Difference]: Start difference. First operand 2467 states and 8927 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:16,421 INFO L93 Difference]: Finished difference Result 4860 states and 17291 transitions. [2021-10-13 19:45:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:45:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-10-13 19:45:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:16,441 INFO L225 Difference]: With dead ends: 4860 [2021-10-13 19:45:16,441 INFO L226 Difference]: Without dead ends: 4658 [2021-10-13 19:45:16,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:45:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-10-13 19:45:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3761. [2021-10-13 19:45:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3755 states have (on average 3.7611185086551266) internal successors, (14123), 3760 states have internal predecessors, (14123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 14123 transitions. [2021-10-13 19:45:16,563 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 14123 transitions. Word has length 19 [2021-10-13 19:45:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:16,563 INFO L470 AbstractCegarLoop]: Abstraction has 3761 states and 14123 transitions. [2021-10-13 19:45:16,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 14123 transitions. [2021-10-13 19:45:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:45:16,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:16,566 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:16,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:16,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 19:45:16,771 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:16,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:16,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1026578459, now seen corresponding path program 3 times [2021-10-13 19:45:16,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:16,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845042164] [2021-10-13 19:45:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:16,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:16,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:16,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845042164] [2021-10-13 19:45:16,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845042164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:16,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189406110] [2021-10-13 19:45:16,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:16,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:16,890 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:16,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 19:45:17,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:45:17,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:17,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 19:45:17,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189406110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:17,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:17,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-13 19:45:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563763369] [2021-10-13 19:45:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:45:17,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:45:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:45:17,544 INFO L87 Difference]: Start difference. First operand 3761 states and 14123 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 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) [2021-10-13 19:45:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:17,696 INFO L93 Difference]: Finished difference Result 1295 states and 4209 transitions. [2021-10-13 19:45:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:45:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 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 20 [2021-10-13 19:45:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:17,701 INFO L225 Difference]: With dead ends: 1295 [2021-10-13 19:45:17,701 INFO L226 Difference]: Without dead ends: 1186 [2021-10-13 19:45:17,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 154.4ms TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-13 19:45:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2021-10-13 19:45:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1180 states have (on average 3.3720338983050846) internal successors, (3979), 1185 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3979 transitions. [2021-10-13 19:45:17,725 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3979 transitions. Word has length 20 [2021-10-13 19:45:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:17,725 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3979 transitions. [2021-10-13 19:45:17,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 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) [2021-10-13 19:45:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3979 transitions. [2021-10-13 19:45:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:17,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:17,728 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:17,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:17,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:17,943 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:17,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:17,943 INFO L82 PathProgramCache]: Analyzing trace with hash 725262904, now seen corresponding path program 4 times [2021-10-13 19:45:17,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:17,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673195386] [2021-10-13 19:45:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:17,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:18,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673195386] [2021-10-13 19:45:18,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673195386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007148396] [2021-10-13 19:45:18,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:18,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:18,324 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:18,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 19:45:18,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:18,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:18,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:45:18,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007148396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:19,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:19,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:45:19,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747085034] [2021-10-13 19:45:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:45:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:45:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:45:19,306 INFO L87 Difference]: Start difference. First operand 1186 states and 3979 transitions. Second operand has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,596 INFO L93 Difference]: Finished difference Result 2796 states and 8984 transitions. [2021-10-13 19:45:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:45:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,605 INFO L225 Difference]: With dead ends: 2796 [2021-10-13 19:45:20,606 INFO L226 Difference]: Without dead ends: 2738 [2021-10-13 19:45:20,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1208.2ms TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:45:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-10-13 19:45:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1998. [2021-10-13 19:45:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1992 states have (on average 3.3659638554216866) internal successors, (6705), 1997 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 6705 transitions. [2021-10-13 19:45:20,649 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 6705 transitions. Word has length 21 [2021-10-13 19:45:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,649 INFO L470 AbstractCegarLoop]: Abstraction has 1998 states and 6705 transitions. [2021-10-13 19:45:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 6705 transitions. [2021-10-13 19:45:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:20,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,652 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:20,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:20,865 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash 850904044, now seen corresponding path program 5 times [2021-10-13 19:45:20,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243100585] [2021-10-13 19:45:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:21,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:21,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243100585] [2021-10-13 19:45:21,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243100585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:21,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040881960] [2021-10-13 19:45:21,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:45:21,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:21,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:21,176 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:21,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 19:45:21,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:45:21,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:21,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:45:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:22,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040881960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:22,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:22,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-13 19:45:22,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733197812] [2021-10-13 19:45:22,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:45:22,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:45:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:45:22,062 INFO L87 Difference]: Start difference. First operand 1998 states and 6705 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:24,444 INFO L93 Difference]: Finished difference Result 2971 states and 9288 transitions. [2021-10-13 19:45:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:45:24,445 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:24,451 INFO L225 Difference]: With dead ends: 2971 [2021-10-13 19:45:24,451 INFO L226 Difference]: Without dead ends: 2791 [2021-10-13 19:45:24,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 1940.1ms TimeCoverageRelationStatistics Valid=412, Invalid=2138, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:45:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-10-13 19:45:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1992. [2021-10-13 19:45:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1986 states have (on average 3.3529707955689827) internal successors, (6659), 1991 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 6659 transitions. [2021-10-13 19:45:24,492 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 6659 transitions. Word has length 21 [2021-10-13 19:45:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:24,493 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 6659 transitions. [2021-10-13 19:45:24,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 6659 transitions. [2021-10-13 19:45:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:24,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:24,494 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:24,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:24,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 19:45:24,695 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:24,696 INFO L82 PathProgramCache]: Analyzing trace with hash 853974903, now seen corresponding path program 6 times [2021-10-13 19:45:24,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:24,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269230598] [2021-10-13 19:45:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:24,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:25,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:25,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269230598] [2021-10-13 19:45:25,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269230598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:25,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969835167] [2021-10-13 19:45:25,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:45:25,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:25,203 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:25,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 19:45:25,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:45:25,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:25,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-13 19:45:25,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:25,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:45:25,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:26,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969835167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:26,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:26,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-13 19:45:26,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939567134] [2021-10-13 19:45:26,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:45:26,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:45:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:45:26,774 INFO L87 Difference]: Start difference. First operand 1992 states and 6659 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:29,697 INFO L93 Difference]: Finished difference Result 4489 states and 14128 transitions. [2021-10-13 19:45:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:45:29,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:29,709 INFO L225 Difference]: With dead ends: 4489 [2021-10-13 19:45:29,709 INFO L226 Difference]: Without dead ends: 4387 [2021-10-13 19:45:29,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 2259.0ms TimeCoverageRelationStatistics Valid=283, Invalid=2069, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:45:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-10-13 19:45:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 2574. [2021-10-13 19:45:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2568 states have (on average 3.35202492211838) internal successors, (8608), 2573 states have internal predecessors, (8608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 8608 transitions. [2021-10-13 19:45:29,813 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 8608 transitions. Word has length 21 [2021-10-13 19:45:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:29,814 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 8608 transitions. [2021-10-13 19:45:29,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 8608 transitions. [2021-10-13 19:45:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:29,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:29,817 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:29,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 19:45:30,018 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:30,020 INFO L82 PathProgramCache]: Analyzing trace with hash 853974904, now seen corresponding path program 6 times [2021-10-13 19:45:30,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:30,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727912861] [2021-10-13 19:45:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:30,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 19:45:30,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:30,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727912861] [2021-10-13 19:45:30,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727912861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:30,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032725028] [2021-10-13 19:45:30,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:45:30,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:30,103 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:30,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 19:45:30,633 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:45:30,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-13 19:45:30,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:30,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:45:30,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:30,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:31,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032725028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:31,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:31,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 12] total 16 [2021-10-13 19:45:31,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546743809] [2021-10-13 19:45:31,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:45:31,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:45:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:45:31,478 INFO L87 Difference]: Start difference. First operand 2574 states and 8608 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:32,085 INFO L93 Difference]: Finished difference Result 4133 states and 13252 transitions. [2021-10-13 19:45:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:45:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:32,095 INFO L225 Difference]: With dead ends: 4133 [2021-10-13 19:45:32,095 INFO L226 Difference]: Without dead ends: 4093 [2021-10-13 19:45:32,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 386.8ms TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:45:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-10-13 19:45:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3264. [2021-10-13 19:45:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3258 states have (on average 3.357888275015347) internal successors, (10940), 3263 states have internal predecessors, (10940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 10940 transitions. [2021-10-13 19:45:32,198 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 10940 transitions. Word has length 21 [2021-10-13 19:45:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:32,198 INFO L470 AbstractCegarLoop]: Abstraction has 3264 states and 10940 transitions. [2021-10-13 19:45:32,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 10940 transitions. [2021-10-13 19:45:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:32,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:32,201 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:32,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:32,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:32,415 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1936373571, now seen corresponding path program 7 times [2021-10-13 19:45:32,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:32,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359677851] [2021-10-13 19:45:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:32,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:32,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359677851] [2021-10-13 19:45:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359677851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268031216] [2021-10-13 19:45:32,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:45:32,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:32,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:32,574 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:32,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 19:45:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:33,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 19:45:33,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:33,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268031216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:33,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:33,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 17 [2021-10-13 19:45:33,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664148714] [2021-10-13 19:45:33,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:45:33,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:45:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:33,818 INFO L87 Difference]: Start difference. First operand 3264 states and 10940 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:34,762 INFO L93 Difference]: Finished difference Result 5097 states and 16327 transitions. [2021-10-13 19:45:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:45:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:34,775 INFO L225 Difference]: With dead ends: 5097 [2021-10-13 19:45:34,775 INFO L226 Difference]: Without dead ends: 5067 [2021-10-13 19:45:34,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 578.3ms TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:45:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-10-13 19:45:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 3887. [2021-10-13 19:45:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3881 states have (on average 3.382375676372069) internal successors, (13127), 3886 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 13127 transitions. [2021-10-13 19:45:34,945 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 13127 transitions. Word has length 21 [2021-10-13 19:45:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:34,945 INFO L470 AbstractCegarLoop]: Abstraction has 3887 states and 13127 transitions. [2021-10-13 19:45:34,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:34,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 13127 transitions. [2021-10-13 19:45:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:34,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:34,949 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:34,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:35,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 19:45:35,163 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:35,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2062014712, now seen corresponding path program 7 times [2021-10-13 19:45:35,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:35,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189268064] [2021-10-13 19:45:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:35,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:35,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:35,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189268064] [2021-10-13 19:45:35,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189268064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:35,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668741708] [2021-10-13 19:45:35,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:45:35,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:35,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:35,521 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:35,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 19:45:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:36,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:45:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:36,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668741708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:36,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:36,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-13 19:45:36,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629135809] [2021-10-13 19:45:36,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:45:36,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:45:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:45:36,525 INFO L87 Difference]: Start difference. First operand 3887 states and 13127 transitions. Second operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:38,950 INFO L93 Difference]: Finished difference Result 7314 states and 22768 transitions. [2021-10-13 19:45:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 19:45:38,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:38,969 INFO L225 Difference]: With dead ends: 7314 [2021-10-13 19:45:38,970 INFO L226 Difference]: Without dead ends: 7172 [2021-10-13 19:45:38,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1736.3ms TimeCoverageRelationStatistics Valid=361, Invalid=2501, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:45:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2021-10-13 19:45:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 4015. [2021-10-13 19:45:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 4009 states have (on average 3.371414317784984) internal successors, (13516), 4014 states have internal predecessors, (13516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 13516 transitions. [2021-10-13 19:45:39,080 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 13516 transitions. Word has length 21 [2021-10-13 19:45:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:39,080 INFO L470 AbstractCegarLoop]: Abstraction has 4015 states and 13516 transitions. [2021-10-13 19:45:39,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 13516 transitions. [2021-10-13 19:45:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:39,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:39,084 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:39,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:39,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 19:45:39,298 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2065085571, now seen corresponding path program 8 times [2021-10-13 19:45:39,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:39,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241716430] [2021-10-13 19:45:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:39,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:39,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:39,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241716430] [2021-10-13 19:45:39,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241716430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:39,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083975132] [2021-10-13 19:45:39,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:39,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:39,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:39,965 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:39,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 19:45:40,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:40,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:40,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:45:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:41,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083975132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:41,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:41,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-13 19:45:41,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022083741] [2021-10-13 19:45:41,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:45:41,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:45:41,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:45:41,397 INFO L87 Difference]: Start difference. First operand 4015 states and 13516 transitions. Second operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:45,917 INFO L93 Difference]: Finished difference Result 6235 states and 19942 transitions. [2021-10-13 19:45:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 19:45:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:45,933 INFO L225 Difference]: With dead ends: 6235 [2021-10-13 19:45:45,934 INFO L226 Difference]: Without dead ends: 6085 [2021-10-13 19:45:45,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 3085.4ms TimeCoverageRelationStatistics Valid=311, Invalid=2881, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:45:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2021-10-13 19:45:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 4483. [2021-10-13 19:45:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4477 states have (on average 3.381728836274291) internal successors, (15140), 4482 states have internal predecessors, (15140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 15140 transitions. [2021-10-13 19:45:46,044 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 15140 transitions. Word has length 21 [2021-10-13 19:45:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:46,045 INFO L470 AbstractCegarLoop]: Abstraction has 4483 states and 15140 transitions. [2021-10-13 19:45:46,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 15140 transitions. [2021-10-13 19:45:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:46,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:46,048 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:46,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 19:45:46,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 19:45:46,249 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:46,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2065085572, now seen corresponding path program 8 times [2021-10-13 19:45:46,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:46,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615304724] [2021-10-13 19:45:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:46,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:46,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:46,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615304724] [2021-10-13 19:45:46,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615304724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:46,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651063426] [2021-10-13 19:45:46,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:46,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:46,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:46,899 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:46,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 19:45:47,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:47,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:47,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 19:45:47,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:47,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:45:47,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:47,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:45:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:48,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651063426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:48,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:48,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:45:48,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257952715] [2021-10-13 19:45:48,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:45:48,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:45:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:45:48,151 INFO L87 Difference]: Start difference. First operand 4483 states and 15140 transitions. Second operand has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:51,752 INFO L93 Difference]: Finished difference Result 7610 states and 24116 transitions. [2021-10-13 19:45:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 19:45:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:45:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:51,771 INFO L225 Difference]: With dead ends: 7610 [2021-10-13 19:45:51,772 INFO L226 Difference]: Without dead ends: 7570 [2021-10-13 19:45:51,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 2702.2ms TimeCoverageRelationStatistics Valid=302, Invalid=2890, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:45:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2021-10-13 19:45:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 4627. [2021-10-13 19:45:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4621 states have (on average 3.3789223111880546) internal successors, (15614), 4626 states have internal predecessors, (15614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 15614 transitions. [2021-10-13 19:45:51,966 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 15614 transitions. Word has length 21 [2021-10-13 19:45:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 15614 transitions. [2021-10-13 19:45:51,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 15614 transitions. [2021-10-13 19:45:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:45:51,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:51,971 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:52,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:52,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-13 19:45:52,187 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:45:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1203265987, now seen corresponding path program 9 times [2021-10-13 19:45:52,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:52,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276452052] [2021-10-13 19:45:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:52,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:52,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:52,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276452052] [2021-10-13 19:45:52,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276452052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:52,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859382312] [2021-10-13 19:45:52,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:52,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:52,639 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:45:52,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 19:45:53,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:45:53,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:53,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 19:45:53,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:53,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:45:53,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 19:45:53,594 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:53,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:45:53,727 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:53,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:45:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:54,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859382312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:54,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:54,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2021-10-13 19:45:54,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808273627] [2021-10-13 19:45:54,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:45:54,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:45:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:45:54,871 INFO L87 Difference]: Start difference. First operand 4627 states and 15614 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:00,226 INFO L93 Difference]: Finished difference Result 7303 states and 23525 transitions. [2021-10-13 19:46:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 19:46:00,227 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:46:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:00,243 INFO L225 Difference]: With dead ends: 7303 [2021-10-13 19:46:00,243 INFO L226 Difference]: Without dead ends: 7229 [2021-10-13 19:46:00,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 3984.4ms TimeCoverageRelationStatistics Valid=304, Invalid=2776, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:46:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2021-10-13 19:46:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 5260. [2021-10-13 19:46:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5254 states have (on average 3.3937952036543586) internal successors, (17831), 5259 states have internal predecessors, (17831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 17831 transitions. [2021-10-13 19:46:00,434 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 17831 transitions. Word has length 21 [2021-10-13 19:46:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:00,435 INFO L470 AbstractCegarLoop]: Abstraction has 5260 states and 17831 transitions. [2021-10-13 19:46:00,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 17831 transitions. [2021-10-13 19:46:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:46:00,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:00,440 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:00,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:00,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:00,655 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1203265988, now seen corresponding path program 9 times [2021-10-13 19:46:00,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:00,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416169086] [2021-10-13 19:46:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:00,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:00,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:00,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416169086] [2021-10-13 19:46:00,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416169086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:00,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754831888] [2021-10-13 19:46:00,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:46:00,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:00,772 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 19:46:01,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:46:01,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:01,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 19:46:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:01,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754831888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:01,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:01,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:46:01,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996178148] [2021-10-13 19:46:01,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:46:01,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:46:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:46:01,742 INFO L87 Difference]: Start difference. First operand 5260 states and 17831 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-10-13 19:46:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:02,657 INFO L93 Difference]: Finished difference Result 11146 states and 36486 transitions. [2021-10-13 19:46:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:46:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 21 [2021-10-13 19:46:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:02,686 INFO L225 Difference]: With dead ends: 11146 [2021-10-13 19:46:02,686 INFO L226 Difference]: Without dead ends: 11016 [2021-10-13 19:46:02,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 322.9ms TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:46:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11016 states. [2021-10-13 19:46:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11016 to 6655. [2021-10-13 19:46:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6655 states, 6649 states have (on average 3.5068431343059108) internal successors, (23317), 6654 states have internal predecessors, (23317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6655 states to 6655 states and 23317 transitions. [2021-10-13 19:46:02,895 INFO L78 Accepts]: Start accepts. Automaton has 6655 states and 23317 transitions. Word has length 21 [2021-10-13 19:46:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:02,895 INFO L470 AbstractCegarLoop]: Abstraction has 6655 states and 23317 transitions. [2021-10-13 19:46:02,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-10-13 19:46:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6655 states and 23317 transitions. [2021-10-13 19:46:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:02,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:02,901 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:02,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-13 19:46:03,117 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash 522735303, now seen corresponding path program 10 times [2021-10-13 19:46:03,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:03,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26690680] [2021-10-13 19:46:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:03,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 19:46:03,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:03,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26690680] [2021-10-13 19:46:03,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26690680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:03,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318959301] [2021-10-13 19:46:03,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:03,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:03,243 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:03,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 19:46:03,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:03,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:03,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:46:03,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:04,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318959301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:04,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:04,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 13 [2021-10-13 19:46:04,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461202194] [2021-10-13 19:46:04,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:46:04,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:46:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:46:04,293 INFO L87 Difference]: Start difference. First operand 6655 states and 23317 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:04,719 INFO L93 Difference]: Finished difference Result 7871 states and 26808 transitions. [2021-10-13 19:46:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:46:04,720 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:04,739 INFO L225 Difference]: With dead ends: 7871 [2021-10-13 19:46:04,739 INFO L226 Difference]: Without dead ends: 7791 [2021-10-13 19:46:04,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 236.5ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:46:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2021-10-13 19:46:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 6967. [2021-10-13 19:46:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6961 states have (on average 3.488722884643011) internal successors, (24285), 6966 states have internal predecessors, (24285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 24285 transitions. [2021-10-13 19:46:04,956 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 24285 transitions. Word has length 22 [2021-10-13 19:46:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:04,956 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 24285 transitions. [2021-10-13 19:46:04,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 24285 transitions. [2021-10-13 19:46:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:04,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:04,960 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:04,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:05,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:05,173 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:05,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash 651447302, now seen corresponding path program 10 times [2021-10-13 19:46:05,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:05,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690841542] [2021-10-13 19:46:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:05,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:06,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:06,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690841542] [2021-10-13 19:46:06,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690841542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:06,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138903119] [2021-10-13 19:46:06,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:06,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:06,101 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:06,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 19:46:06,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:06,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:06,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:46:06,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:07,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138903119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:07,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:07,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2021-10-13 19:46:07,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241566925] [2021-10-13 19:46:07,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:46:07,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:46:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:46:07,296 INFO L87 Difference]: Start difference. First operand 6967 states and 24285 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:08,865 INFO L93 Difference]: Finished difference Result 10079 states and 33630 transitions. [2021-10-13 19:46:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:46:08,866 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:08,894 INFO L225 Difference]: With dead ends: 10079 [2021-10-13 19:46:08,895 INFO L226 Difference]: Without dead ends: 9899 [2021-10-13 19:46:08,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1354.3ms TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:46:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-10-13 19:46:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 7857. [2021-10-13 19:46:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7857 states, 7851 states have (on average 3.4477136670487836) internal successors, (27068), 7856 states have internal predecessors, (27068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7857 states to 7857 states and 27068 transitions. [2021-10-13 19:46:09,094 INFO L78 Accepts]: Start accepts. Automaton has 7857 states and 27068 transitions. Word has length 22 [2021-10-13 19:46:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:09,094 INFO L470 AbstractCegarLoop]: Abstraction has 7857 states and 27068 transitions. [2021-10-13 19:46:09,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 7857 states and 27068 transitions. [2021-10-13 19:46:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:09,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:09,099 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:09,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:09,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 19:46:09,300 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:09,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1733845971, now seen corresponding path program 11 times [2021-10-13 19:46:09,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:09,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345178500] [2021-10-13 19:46:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:09,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:10,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:10,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345178500] [2021-10-13 19:46:10,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345178500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:10,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084391813] [2021-10-13 19:46:10,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:10,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:10,084 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:10,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 19:46:10,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:10,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:10,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:46:10,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:11,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084391813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:11,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:11,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2021-10-13 19:46:11,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062401554] [2021-10-13 19:46:11,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:46:11,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:46:11,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:46:11,307 INFO L87 Difference]: Start difference. First operand 7857 states and 27068 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:13,716 INFO L93 Difference]: Finished difference Result 11014 states and 36360 transitions. [2021-10-13 19:46:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:46:13,717 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:13,741 INFO L225 Difference]: With dead ends: 11014 [2021-10-13 19:46:13,741 INFO L226 Difference]: Without dead ends: 10804 [2021-10-13 19:46:13,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1860.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1490, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:46:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10804 states. [2021-10-13 19:46:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10804 to 8853. [2021-10-13 19:46:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 8847 states have (on average 3.4549564824234205) internal successors, (30566), 8852 states have internal predecessors, (30566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 30566 transitions. [2021-10-13 19:46:13,968 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 30566 transitions. Word has length 22 [2021-10-13 19:46:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:13,968 INFO L470 AbstractCegarLoop]: Abstraction has 8853 states and 30566 transitions. [2021-10-13 19:46:13,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 30566 transitions. [2021-10-13 19:46:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:13,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:13,973 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:14,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:14,174 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1862557970, now seen corresponding path program 11 times [2021-10-13 19:46:14,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:14,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604729212] [2021-10-13 19:46:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:14,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:14,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:14,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604729212] [2021-10-13 19:46:14,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604729212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:14,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679407214] [2021-10-13 19:46:14,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:14,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:14,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:14,910 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:14,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 19:46:15,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:15,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:15,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:46:15,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:16,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679407214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:16,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:16,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 20 [2021-10-13 19:46:16,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215972512] [2021-10-13 19:46:16,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:46:16,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:46:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:46:16,136 INFO L87 Difference]: Start difference. First operand 8853 states and 30566 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:17,688 INFO L93 Difference]: Finished difference Result 10835 states and 36461 transitions. [2021-10-13 19:46:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:46:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:17,713 INFO L225 Difference]: With dead ends: 10835 [2021-10-13 19:46:17,713 INFO L226 Difference]: Without dead ends: 10615 [2021-10-13 19:46:17,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1167.1ms TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:46:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2021-10-13 19:46:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 8897. [2021-10-13 19:46:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8897 states, 8891 states have (on average 3.4090653469800922) internal successors, (30310), 8896 states have internal predecessors, (30310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8897 states to 8897 states and 30310 transitions. [2021-10-13 19:46:17,922 INFO L78 Accepts]: Start accepts. Automaton has 8897 states and 30310 transitions. Word has length 22 [2021-10-13 19:46:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:17,923 INFO L470 AbstractCegarLoop]: Abstraction has 8897 states and 30310 transitions. [2021-10-13 19:46:17,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8897 states and 30310 transitions. [2021-10-13 19:46:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:17,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:17,928 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:17,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:18,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:18,129 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1000738386, now seen corresponding path program 12 times [2021-10-13 19:46:18,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:18,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595548451] [2021-10-13 19:46:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:18,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:46:18,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:18,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595548451] [2021-10-13 19:46:18,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595548451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:18,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097301115] [2021-10-13 19:46:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:18,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:18,304 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:18,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 19:46:18,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:46:18,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:18,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:46:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:46:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097301115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:19,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:19,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 15 [2021-10-13 19:46:19,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125938221] [2021-10-13 19:46:19,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:46:19,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:46:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:46:19,384 INFO L87 Difference]: Start difference. First operand 8897 states and 30310 transitions. Second operand has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:19,945 INFO L93 Difference]: Finished difference Result 12361 states and 41052 transitions. [2021-10-13 19:46:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:46:19,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:19,981 INFO L225 Difference]: With dead ends: 12361 [2021-10-13 19:46:19,981 INFO L226 Difference]: Without dead ends: 12241 [2021-10-13 19:46:19,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 217.1ms TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:46:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12241 states. [2021-10-13 19:46:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12241 to 9301. [2021-10-13 19:46:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9301 states, 9295 states have (on average 3.4379774072081766) internal successors, (31956), 9300 states have internal predecessors, (31956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 31956 transitions. [2021-10-13 19:46:20,218 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 31956 transitions. Word has length 22 [2021-10-13 19:46:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:20,219 INFO L470 AbstractCegarLoop]: Abstraction has 9301 states and 31956 transitions. [2021-10-13 19:46:20,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 31956 transitions. [2021-10-13 19:46:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:20,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:20,224 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:20,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:20,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 19:46:20,425 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:20,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1020823670, now seen corresponding path program 8 times [2021-10-13 19:46:20,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:20,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027300628] [2021-10-13 19:46:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:20,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:20,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:20,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027300628] [2021-10-13 19:46:20,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027300628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:20,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562248254] [2021-10-13 19:46:20,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:46:20,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:20,544 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:20,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 19:46:21,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:46:21,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 19:46:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:21,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:46:21,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:46:21,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:46:21,983 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:21,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:46:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:22,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562248254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:22,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:22,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 18 [2021-10-13 19:46:22,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327696819] [2021-10-13 19:46:22,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:46:22,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:46:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:46:22,403 INFO L87 Difference]: Start difference. First operand 9301 states and 31956 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:23,173 INFO L93 Difference]: Finished difference Result 11891 states and 39614 transitions. [2021-10-13 19:46:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:46:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:23,202 INFO L225 Difference]: With dead ends: 11891 [2021-10-13 19:46:23,203 INFO L226 Difference]: Without dead ends: 11831 [2021-10-13 19:46:23,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 437.2ms TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:46:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11831 states. [2021-10-13 19:46:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11831 to 9342. [2021-10-13 19:46:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9342 states, 9336 states have (on average 3.43691088260497) internal successors, (32087), 9341 states have internal predecessors, (32087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9342 states to 9342 states and 32087 transitions. [2021-10-13 19:46:23,425 INFO L78 Accepts]: Start accepts. Automaton has 9342 states and 32087 transitions. Word has length 22 [2021-10-13 19:46:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:23,426 INFO L470 AbstractCegarLoop]: Abstraction has 9342 states and 32087 transitions. [2021-10-13 19:46:23,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9342 states and 32087 transitions. [2021-10-13 19:46:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:23,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:23,432 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:23,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-13 19:46:23,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 19:46:23,633 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:23,634 INFO L82 PathProgramCache]: Analyzing trace with hash 822856458, now seen corresponding path program 9 times [2021-10-13 19:46:23,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:23,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417543004] [2021-10-13 19:46:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:23,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:24,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:24,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417543004] [2021-10-13 19:46:24,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417543004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:24,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261248076] [2021-10-13 19:46:24,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:46:24,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:24,519 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:24,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 19:46:25,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:46:25,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:25,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:46:25,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:25,932 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:46:25,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2021-10-13 19:46:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:46:26,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261248076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:26,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:26,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-13 19:46:26,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168991776] [2021-10-13 19:46:26,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:46:26,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:46:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:46:26,158 INFO L87 Difference]: Start difference. First operand 9342 states and 32087 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:28,397 INFO L93 Difference]: Finished difference Result 11187 states and 37476 transitions. [2021-10-13 19:46:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:46:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:28,424 INFO L225 Difference]: With dead ends: 11187 [2021-10-13 19:46:28,425 INFO L226 Difference]: Without dead ends: 11067 [2021-10-13 19:46:28,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1684.5ms TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:46:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11067 states. [2021-10-13 19:46:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11067 to 9268. [2021-10-13 19:46:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9262 states have (on average 3.439213992658173) internal successors, (31854), 9267 states have internal predecessors, (31854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 31854 transitions. [2021-10-13 19:46:28,620 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 31854 transitions. Word has length 22 [2021-10-13 19:46:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:28,620 INFO L470 AbstractCegarLoop]: Abstraction has 9268 states and 31854 transitions. [2021-10-13 19:46:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 31854 transitions. [2021-10-13 19:46:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:28,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:28,626 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:28,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:28,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 19:46:28,827 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1008318365, now seen corresponding path program 5 times [2021-10-13 19:46:28,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:28,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545277786] [2021-10-13 19:46:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:28,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:29,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:29,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545277786] [2021-10-13 19:46:29,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545277786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:29,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141585678] [2021-10-13 19:46:29,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:29,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:29,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:29,798 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:29,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 19:46:30,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:30,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:30,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:46:30,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:31,340 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:31,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:46:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:31,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141585678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:31,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:31,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:46:31,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443856501] [2021-10-13 19:46:31,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:46:31,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:46:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:46:31,391 INFO L87 Difference]: Start difference. First operand 9268 states and 31854 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:35,009 INFO L93 Difference]: Finished difference Result 12530 states and 40888 transitions. [2021-10-13 19:46:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:46:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:35,043 INFO L225 Difference]: With dead ends: 12530 [2021-10-13 19:46:35,043 INFO L226 Difference]: Without dead ends: 12456 [2021-10-13 19:46:35,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 3405.4ms TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:46:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12456 states. [2021-10-13 19:46:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12456 to 9244. [2021-10-13 19:46:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9238 states have (on average 3.4332106516562026) internal successors, (31716), 9243 states have internal predecessors, (31716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 31716 transitions. [2021-10-13 19:46:35,351 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 31716 transitions. Word has length 22 [2021-10-13 19:46:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:35,351 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 31716 transitions. [2021-10-13 19:46:35,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 31716 transitions. [2021-10-13 19:46:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:35,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:35,357 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:35,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-13 19:46:35,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:35,558 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:35,560 INFO L82 PathProgramCache]: Analyzing trace with hash 707565288, now seen corresponding path program 10 times [2021-10-13 19:46:35,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:35,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416343846] [2021-10-13 19:46:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:35,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:36,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:36,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416343846] [2021-10-13 19:46:36,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416343846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:36,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734361848] [2021-10-13 19:46:36,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:36,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:36,461 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:36,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 19:46:37,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:37,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:46:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:37,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 104 [2021-10-13 19:46:38,532 INFO L354 Elim1Store]: treesize reduction 246, result has 15.8 percent of original size [2021-10-13 19:46:38,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 89 [2021-10-13 19:46:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:38,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734361848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:38,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:38,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:46:38,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168982581] [2021-10-13 19:46:38,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:46:38,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:46:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:46:38,843 INFO L87 Difference]: Start difference. First operand 9244 states and 31716 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:43,774 INFO L93 Difference]: Finished difference Result 13636 states and 44308 transitions. [2021-10-13 19:46:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 19:46:43,775 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:43,812 INFO L225 Difference]: With dead ends: 13636 [2021-10-13 19:46:43,812 INFO L226 Difference]: Without dead ends: 13570 [2021-10-13 19:46:43,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 3950.3ms TimeCoverageRelationStatistics Valid=386, Invalid=2584, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:46:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13570 states. [2021-10-13 19:46:44,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13570 to 9404. [2021-10-13 19:46:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9404 states, 9398 states have (on average 3.4276441796126838) internal successors, (32213), 9403 states have internal predecessors, (32213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9404 states to 9404 states and 32213 transitions. [2021-10-13 19:46:44,062 INFO L78 Accepts]: Start accepts. Automaton has 9404 states and 32213 transitions. Word has length 22 [2021-10-13 19:46:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:44,063 INFO L470 AbstractCegarLoop]: Abstraction has 9404 states and 32213 transitions. [2021-10-13 19:46:44,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 9404 states and 32213 transitions. [2021-10-13 19:46:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:44,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:44,069 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:44,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 19:46:44,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:44,270 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:44,270 INFO L82 PathProgramCache]: Analyzing trace with hash 707565289, now seen corresponding path program 6 times [2021-10-13 19:46:44,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:44,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896124672] [2021-10-13 19:46:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:44,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:44,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:44,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896124672] [2021-10-13 19:46:44,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896124672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:44,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710917423] [2021-10-13 19:46:44,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:44,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:44,521 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:44,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 19:46:45,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:46:45,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:45,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 19:46:45,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:45,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:46:45,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:46:45,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:46:46,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:46,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:46,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:46,479 INFO L354 Elim1Store]: treesize reduction 114, result has 24.0 percent of original size [2021-10-13 19:46:46,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 62 [2021-10-13 19:46:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:46,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710917423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:46,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:46,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 22 [2021-10-13 19:46:46,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544660810] [2021-10-13 19:46:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:46:46,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:46:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:46:46,765 INFO L87 Difference]: Start difference. First operand 9404 states and 32213 transitions. Second operand has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:47,926 INFO L93 Difference]: Finished difference Result 10946 states and 36844 transitions. [2021-10-13 19:46:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:46:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:47,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:47,953 INFO L225 Difference]: With dead ends: 10946 [2021-10-13 19:46:47,954 INFO L226 Difference]: Without dead ends: 10866 [2021-10-13 19:46:47,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1131.7ms TimeCoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:46:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2021-10-13 19:46:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 9448. [2021-10-13 19:46:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9448 states, 9442 states have (on average 3.4275577208218597) internal successors, (32363), 9447 states have internal predecessors, (32363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9448 states to 9448 states and 32363 transitions. [2021-10-13 19:46:48,157 INFO L78 Accepts]: Start accepts. Automaton has 9448 states and 32363 transitions. Word has length 22 [2021-10-13 19:46:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:48,157 INFO L470 AbstractCegarLoop]: Abstraction has 9448 states and 32363 transitions. [2021-10-13 19:46:48,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9448 states and 32363 transitions. [2021-10-13 19:46:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:48,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:48,163 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:48,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:48,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:48,364 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash 703423069, now seen corresponding path program 7 times [2021-10-13 19:46:48,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:48,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523035583] [2021-10-13 19:46:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:48,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 19:46:48,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:48,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523035583] [2021-10-13 19:46:48,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523035583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:48,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603427974] [2021-10-13 19:46:48,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:46:48,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:48,492 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:48,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 19:46:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:49,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:46:49,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:49,913 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:49,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:46:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:49,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603427974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:49,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:49,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 18 [2021-10-13 19:46:49,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4424265] [2021-10-13 19:46:49,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:46:49,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:49,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:46:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:46:49,944 INFO L87 Difference]: Start difference. First operand 9448 states and 32363 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:50,564 INFO L93 Difference]: Finished difference Result 11118 states and 37656 transitions. [2021-10-13 19:46:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:46:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:46:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:50,612 INFO L225 Difference]: With dead ends: 11118 [2021-10-13 19:46:50,612 INFO L226 Difference]: Without dead ends: 11104 [2021-10-13 19:46:50,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 439.5ms TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:46:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11104 states. [2021-10-13 19:46:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11104 to 9506. [2021-10-13 19:46:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 9500 states have (on average 3.4276842105263157) internal successors, (32563), 9505 states have internal predecessors, (32563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 32563 transitions. [2021-10-13 19:46:51,134 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 32563 transitions. Word has length 22 [2021-10-13 19:46:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:51,134 INFO L470 AbstractCegarLoop]: Abstraction has 9506 states and 32563 transitions. [2021-10-13 19:46:51,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 32563 transitions. [2021-10-13 19:46:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:46:51,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:51,143 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:51,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:51,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:46:51,357 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:46:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1804834614, now seen corresponding path program 11 times [2021-10-13 19:46:51,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:51,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535047440] [2021-10-13 19:46:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:51,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:52,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:52,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535047440] [2021-10-13 19:46:52,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535047440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:52,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799913494] [2021-10-13 19:46:52,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:52,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:52,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:52,181 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:46:52,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 19:46:53,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:53,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:53,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:46:53,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:53,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 131 [2021-10-13 19:46:53,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 19:46:53,504 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:53,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 19:46:53,624 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:53,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:46:54,120 INFO L354 Elim1Store]: treesize reduction 156, result has 17.9 percent of original size [2021-10-13 19:46:54,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 81 [2021-10-13 19:46:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:55,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799913494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:55,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:55,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:46:55,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987079209] [2021-10-13 19:46:55,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:46:55,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:46:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:46:55,089 INFO L87 Difference]: Start difference. First operand 9506 states and 32563 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:02,191 INFO L93 Difference]: Finished difference Result 12417 states and 40039 transitions. [2021-10-13 19:47:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 19:47:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:02,240 INFO L225 Difference]: With dead ends: 12417 [2021-10-13 19:47:02,240 INFO L226 Difference]: Without dead ends: 12407 [2021-10-13 19:47:02,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 5193.9ms TimeCoverageRelationStatistics Valid=501, Invalid=3281, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 19:47:02,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12407 states. [2021-10-13 19:47:02,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12407 to 8206. [2021-10-13 19:47:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 8200 states have (on average 3.396829268292683) internal successors, (27854), 8205 states have internal predecessors, (27854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 27854 transitions. [2021-10-13 19:47:02,594 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 27854 transitions. Word has length 22 [2021-10-13 19:47:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:02,595 INFO L470 AbstractCegarLoop]: Abstraction has 8206 states and 27854 transitions. [2021-10-13 19:47:02,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 27854 transitions. [2021-10-13 19:47:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:02,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:02,600 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:02,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:02,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 19:47:02,801 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:02,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1679193474, now seen corresponding path program 12 times [2021-10-13 19:47:02,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:02,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306556067] [2021-10-13 19:47:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:02,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:03,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:03,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306556067] [2021-10-13 19:47:03,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306556067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:03,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37208774] [2021-10-13 19:47:03,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:47:03,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:03,339 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:03,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 19:47:04,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:47:04,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:04,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:47:04,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:04,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 431 treesize of output 423 [2021-10-13 19:47:04,765 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:47:04,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-13 19:47:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:05,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37208774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:05,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:05,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-13 19:47:05,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318819137] [2021-10-13 19:47:05,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:47:05,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:47:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:47:05,298 INFO L87 Difference]: Start difference. First operand 8206 states and 27854 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:08,996 INFO L93 Difference]: Finished difference Result 10065 states and 32624 transitions. [2021-10-13 19:47:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:47:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:09,021 INFO L225 Difference]: With dead ends: 10065 [2021-10-13 19:47:09,021 INFO L226 Difference]: Without dead ends: 10055 [2021-10-13 19:47:09,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3085.0ms TimeCoverageRelationStatistics Valid=355, Invalid=2095, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:47:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2021-10-13 19:47:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 7616. [2021-10-13 19:47:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7616 states, 7610 states have (on average 3.3789750328515114) internal successors, (25714), 7615 states have internal predecessors, (25714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 25714 transitions. [2021-10-13 19:47:09,270 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 25714 transitions. Word has length 22 [2021-10-13 19:47:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:09,270 INFO L470 AbstractCegarLoop]: Abstraction has 7616 states and 25714 transitions. [2021-10-13 19:47:09,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 25714 transitions. [2021-10-13 19:47:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:09,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:09,275 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:09,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 19:47:09,476 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:09,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:09,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1676122614, now seen corresponding path program 13 times [2021-10-13 19:47:09,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:09,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771441437] [2021-10-13 19:47:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:09,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:09,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:09,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771441437] [2021-10-13 19:47:09,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771441437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:09,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672645868] [2021-10-13 19:47:09,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:47:09,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:09,990 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:09,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 19:47:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:11,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:47:11,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:11,477 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:47:11,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-13 19:47:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:47:11,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672645868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:11,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:11,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-13 19:47:11,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199748996] [2021-10-13 19:47:11,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:47:11,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:11,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:47:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:47:11,773 INFO L87 Difference]: Start difference. First operand 7616 states and 25714 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:13,356 INFO L93 Difference]: Finished difference Result 9104 states and 30135 transitions. [2021-10-13 19:47:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:47:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:13,379 INFO L225 Difference]: With dead ends: 9104 [2021-10-13 19:47:13,379 INFO L226 Difference]: Without dead ends: 9044 [2021-10-13 19:47:13,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1241.3ms TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:47:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-10-13 19:47:13,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 7616. [2021-10-13 19:47:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7616 states, 7610 states have (on average 3.3789750328515114) internal successors, (25714), 7615 states have internal predecessors, (25714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 25714 transitions. [2021-10-13 19:47:13,524 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 25714 transitions. Word has length 22 [2021-10-13 19:47:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:13,524 INFO L470 AbstractCegarLoop]: Abstraction has 7616 states and 25714 transitions. [2021-10-13 19:47:13,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 25714 transitions. [2021-10-13 19:47:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:13,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:13,529 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:13,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-13 19:47:13,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 19:47:13,730 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:13,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1757025098, now seen corresponding path program 14 times [2021-10-13 19:47:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:13,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738770334] [2021-10-13 19:47:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:13,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:13,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:13,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738770334] [2021-10-13 19:47:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738770334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:13,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004706210] [2021-10-13 19:47:13,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:47:13,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:13,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:13,951 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:13,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 19:47:15,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:47:15,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:15,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-13 19:47:15,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:15,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:47:15,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:47:15,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:15,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:15,700 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-13 19:47:15,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-13 19:47:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:16,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004706210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:16,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:16,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 20 [2021-10-13 19:47:16,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463129151] [2021-10-13 19:47:16,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:47:16,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:47:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:47:16,068 INFO L87 Difference]: Start difference. First operand 7616 states and 25714 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:16,957 INFO L93 Difference]: Finished difference Result 9620 states and 31536 transitions. [2021-10-13 19:47:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:47:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:16,981 INFO L225 Difference]: With dead ends: 9620 [2021-10-13 19:47:16,981 INFO L226 Difference]: Without dead ends: 9530 [2021-10-13 19:47:16,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 704.3ms TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:47:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2021-10-13 19:47:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 7406. [2021-10-13 19:47:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7406 states, 7400 states have (on average 3.3762162162162164) internal successors, (24984), 7405 states have internal predecessors, (24984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 24984 transitions. [2021-10-13 19:47:17,146 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 24984 transitions. Word has length 22 [2021-10-13 19:47:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:17,146 INFO L470 AbstractCegarLoop]: Abstraction has 7406 states and 24984 transitions. [2021-10-13 19:47:17,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 24984 transitions. [2021-10-13 19:47:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:17,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:17,151 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:17,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:17,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:17,352 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -287418498, now seen corresponding path program 15 times [2021-10-13 19:47:17,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:17,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537937265] [2021-10-13 19:47:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:17,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:17,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:17,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537937265] [2021-10-13 19:47:17,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537937265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:17,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640969123] [2021-10-13 19:47:17,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:47:17,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:17,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:17,992 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 19:47:19,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:47:19,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:19,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:47:19,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:19,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:47:19,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:19,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:20,133 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:20,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:47:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:20,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640969123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:20,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:20,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 26 [2021-10-13 19:47:20,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971993549] [2021-10-13 19:47:20,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:47:20,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:47:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:47:20,603 INFO L87 Difference]: Start difference. First operand 7406 states and 24984 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:23,898 INFO L93 Difference]: Finished difference Result 9922 states and 31780 transitions. [2021-10-13 19:47:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:47:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:23,921 INFO L225 Difference]: With dead ends: 9922 [2021-10-13 19:47:23,921 INFO L226 Difference]: Without dead ends: 9522 [2021-10-13 19:47:23,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3114.0ms TimeCoverageRelationStatistics Valid=366, Invalid=2286, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:47:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9522 states. [2021-10-13 19:47:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9522 to 7324. [2021-10-13 19:47:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7324 states, 7318 states have (on average 3.374419240229571) internal successors, (24694), 7323 states have internal predecessors, (24694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7324 states to 7324 states and 24694 transitions. [2021-10-13 19:47:24,074 INFO L78 Accepts]: Start accepts. Automaton has 7324 states and 24694 transitions. Word has length 22 [2021-10-13 19:47:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 7324 states and 24694 transitions. [2021-10-13 19:47:24,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7324 states and 24694 transitions. [2021-10-13 19:47:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:24,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:24,079 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:24,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:24,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 19:47:24,280 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash -101956591, now seen corresponding path program 8 times [2021-10-13 19:47:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:24,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45060558] [2021-10-13 19:47:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:24,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:24,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:24,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45060558] [2021-10-13 19:47:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45060558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:24,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304693356] [2021-10-13 19:47:24,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:47:24,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:24,439 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:24,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 19:47:25,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:47:25,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:25,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:47:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:25,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 19:47:25,957 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:25,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 19:47:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:25,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304693356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:25,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:25,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 19:47:25,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834187722] [2021-10-13 19:47:25,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:47:25,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:47:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:47:25,995 INFO L87 Difference]: Start difference. First operand 7324 states and 24694 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:26,397 INFO L93 Difference]: Finished difference Result 9033 states and 29509 transitions. [2021-10-13 19:47:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:47:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:26,419 INFO L225 Difference]: With dead ends: 9033 [2021-10-13 19:47:26,419 INFO L226 Difference]: Without dead ends: 9009 [2021-10-13 19:47:26,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 243.9ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:47:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2021-10-13 19:47:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 6878. [2021-10-13 19:47:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6878 states, 6872 states have (on average 3.3578288707799766) internal successors, (23075), 6877 states have internal predecessors, (23075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6878 states to 6878 states and 23075 transitions. [2021-10-13 19:47:26,570 INFO L78 Accepts]: Start accepts. Automaton has 6878 states and 23075 transitions. Word has length 22 [2021-10-13 19:47:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:26,570 INFO L470 AbstractCegarLoop]: Abstraction has 6878 states and 23075 transitions. [2021-10-13 19:47:26,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6878 states and 23075 transitions. [2021-10-13 19:47:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:26,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:26,574 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:26,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:26,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:26,775 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash -402709667, now seen corresponding path program 9 times [2021-10-13 19:47:26,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:26,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179702372] [2021-10-13 19:47:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:26,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 19:47:26,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:26,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179702372] [2021-10-13 19:47:26,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179702372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:26,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488551325] [2021-10-13 19:47:26,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:47:26,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:26,907 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:26,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 19:47:28,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:47:28,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:28,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 19:47:28,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:28,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:47:28,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:28,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:28,812 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:28,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-10-13 19:47:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:28,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488551325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:28,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:28,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2021-10-13 19:47:28,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997830307] [2021-10-13 19:47:28,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:47:28,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:47:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:47:28,948 INFO L87 Difference]: Start difference. First operand 6878 states and 23075 transitions. Second operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:31,668 INFO L93 Difference]: Finished difference Result 10593 states and 33370 transitions. [2021-10-13 19:47:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 19:47:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:31,694 INFO L225 Difference]: With dead ends: 10593 [2021-10-13 19:47:31,694 INFO L226 Difference]: Without dead ends: 9635 [2021-10-13 19:47:31,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2000.0ms TimeCoverageRelationStatistics Valid=413, Invalid=3009, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 19:47:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2021-10-13 19:47:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 6452. [2021-10-13 19:47:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 6446 states have (on average 3.361154204157617) internal successors, (21666), 6451 states have internal predecessors, (21666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 21666 transitions. [2021-10-13 19:47:31,915 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 21666 transitions. Word has length 22 [2021-10-13 19:47:31,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:31,915 INFO L470 AbstractCegarLoop]: Abstraction has 6452 states and 21666 transitions. [2021-10-13 19:47:31,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 21666 transitions. [2021-10-13 19:47:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:31,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:31,919 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:31,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-13 19:47:32,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:32,120 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1688151536, now seen corresponding path program 16 times [2021-10-13 19:47:32,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:32,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329206766] [2021-10-13 19:47:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:32,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:32,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:32,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329206766] [2021-10-13 19:47:32,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329206766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:32,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918843182] [2021-10-13 19:47:32,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:47:32,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:32,862 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:32,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 19:47:34,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:47:34,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:47:34,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:34,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 547 treesize of output 531 [2021-10-13 19:47:35,130 INFO L354 Elim1Store]: treesize reduction 170, result has 13.3 percent of original size [2021-10-13 19:47:35,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 63 [2021-10-13 19:47:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918843182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:35,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:47:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051153830] [2021-10-13 19:47:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:47:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:47:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:47:35,543 INFO L87 Difference]: Start difference. First operand 6452 states and 21666 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:38,709 INFO L93 Difference]: Finished difference Result 7262 states and 23718 transitions. [2021-10-13 19:47:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:47:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:38,733 INFO L225 Difference]: With dead ends: 7262 [2021-10-13 19:47:38,733 INFO L226 Difference]: Without dead ends: 7238 [2021-10-13 19:47:38,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2702.7ms TimeCoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:47:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-10-13 19:47:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 6530. [2021-10-13 19:47:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 6524 states have (on average 3.349325567136726) internal successors, (21851), 6529 states have internal predecessors, (21851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 21851 transitions. [2021-10-13 19:47:38,862 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 21851 transitions. Word has length 22 [2021-10-13 19:47:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:38,862 INFO L470 AbstractCegarLoop]: Abstraction has 6530 states and 21851 transitions. [2021-10-13 19:47:38,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 21851 transitions. [2021-10-13 19:47:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:38,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:38,867 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:38,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:39,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:39,068 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1663606871, now seen corresponding path program 10 times [2021-10-13 19:47:39,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:39,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248159408] [2021-10-13 19:47:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:39,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:39,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:39,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248159408] [2021-10-13 19:47:39,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248159408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:39,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496237633] [2021-10-13 19:47:39,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:47:39,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:39,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:39,238 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:39,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 19:47:40,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:47:40,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:40,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 19:47:40,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:40,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 535 treesize of output 503 [2021-10-13 19:47:41,016 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:41,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:47:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:41,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496237633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:41,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:41,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 20 [2021-10-13 19:47:41,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417583915] [2021-10-13 19:47:41,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:47:41,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:47:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:47:41,223 INFO L87 Difference]: Start difference. First operand 6530 states and 21851 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:44,110 INFO L93 Difference]: Finished difference Result 9686 states and 30705 transitions. [2021-10-13 19:47:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 19:47:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:44,133 INFO L225 Difference]: With dead ends: 9686 [2021-10-13 19:47:44,133 INFO L226 Difference]: Without dead ends: 9666 [2021-10-13 19:47:44,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1847.8ms TimeCoverageRelationStatistics Valid=426, Invalid=2544, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:47:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2021-10-13 19:47:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6480. [2021-10-13 19:47:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6480 states, 6474 states have (on average 3.3463083101637316) internal successors, (21664), 6479 states have internal predecessors, (21664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 21664 transitions. [2021-10-13 19:47:44,271 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 21664 transitions. Word has length 22 [2021-10-13 19:47:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:44,271 INFO L470 AbstractCegarLoop]: Abstraction has 6480 states and 21664 transitions. [2021-10-13 19:47:44,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 21664 transitions. [2021-10-13 19:47:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:47:44,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:44,275 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:44,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:44,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:44,476 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:44,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1353455216, now seen corresponding path program 17 times [2021-10-13 19:47:44,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:44,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502221525] [2021-10-13 19:47:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:44,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:45,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:45,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502221525] [2021-10-13 19:47:45,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502221525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:45,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460053852] [2021-10-13 19:47:45,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:47:45,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:45,146 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:45,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 19:47:46,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:47:46,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:46,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:47:46,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:46,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:47:46,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:46,826 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:47:46,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-13 19:47:46,956 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:47:46,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-13 19:47:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:47,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:47,719 INFO L354 Elim1Store]: treesize reduction 102, result has 23.9 percent of original size [2021-10-13 19:47:47,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 60 [2021-10-13 19:47:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:47,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460053852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:47,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:47,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:47:47,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957476595] [2021-10-13 19:47:47,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:47:47,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:47:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:47:47,798 INFO L87 Difference]: Start difference. First operand 6480 states and 21664 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:49,681 INFO L93 Difference]: Finished difference Result 6770 states and 22318 transitions. [2021-10-13 19:47:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:47:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:47:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:49,696 INFO L225 Difference]: With dead ends: 6770 [2021-10-13 19:47:49,696 INFO L226 Difference]: Without dead ends: 6756 [2021-10-13 19:47:49,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1726.3ms TimeCoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:47:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6756 states. [2021-10-13 19:47:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6756 to 6434. [2021-10-13 19:47:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6428 states have (on average 3.340230242688239) internal successors, (21471), 6433 states have internal predecessors, (21471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 21471 transitions. [2021-10-13 19:47:49,812 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 21471 transitions. Word has length 22 [2021-10-13 19:47:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:49,812 INFO L470 AbstractCegarLoop]: Abstraction has 6434 states and 21471 transitions. [2021-10-13 19:47:49,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 21471 transitions. [2021-10-13 19:47:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:49,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:49,817 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:49,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:50,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:50,017 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1275823047, now seen corresponding path program 18 times [2021-10-13 19:47:50,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:50,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012618286] [2021-10-13 19:47:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:50,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:47:50,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012618286] [2021-10-13 19:47:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012618286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011593239] [2021-10-13 19:47:50,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:47:50,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:50,205 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:50,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 19:47:51,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:47:51,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:51,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:47:51,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:52,042 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:47:52,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 62 [2021-10-13 19:47:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:47:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011593239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 19 [2021-10-13 19:47:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115597500] [2021-10-13 19:47:52,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:47:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:47:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:47:52,143 INFO L87 Difference]: Start difference. First operand 6434 states and 21471 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:52,681 INFO L93 Difference]: Finished difference Result 8066 states and 26412 transitions. [2021-10-13 19:47:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:47:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:47:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:52,700 INFO L225 Difference]: With dead ends: 8066 [2021-10-13 19:47:52,700 INFO L226 Difference]: Without dead ends: 7956 [2021-10-13 19:47:52,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 385.7ms TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:47:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2021-10-13 19:47:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 6102. [2021-10-13 19:47:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6096 states have (on average 3.356955380577428) internal successors, (20464), 6101 states have internal predecessors, (20464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 20464 transitions. [2021-10-13 19:47:52,818 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 20464 transitions. Word has length 23 [2021-10-13 19:47:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:52,818 INFO L470 AbstractCegarLoop]: Abstraction has 6102 states and 20464 transitions. [2021-10-13 19:47:52,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 20464 transitions. [2021-10-13 19:47:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:52,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:52,822 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:52,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:53,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:53,022 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1279965267, now seen corresponding path program 19 times [2021-10-13 19:47:53,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:53,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959725518] [2021-10-13 19:47:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:53,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:47:53,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959725518] [2021-10-13 19:47:53,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959725518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:53,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136220980] [2021-10-13 19:47:53,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:47:53,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:53,216 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:53,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 19:47:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:54,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:47:54,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:55,153 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:47:55,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 64 [2021-10-13 19:47:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:47:55,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136220980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:55,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:55,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 19 [2021-10-13 19:47:55,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452178120] [2021-10-13 19:47:55,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:47:55,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:47:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:47:55,199 INFO L87 Difference]: Start difference. First operand 6102 states and 20464 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:55,745 INFO L93 Difference]: Finished difference Result 7202 states and 23702 transitions. [2021-10-13 19:47:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:47:55,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:47:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:55,762 INFO L225 Difference]: With dead ends: 7202 [2021-10-13 19:47:55,763 INFO L226 Difference]: Without dead ends: 7130 [2021-10-13 19:47:55,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 402.6ms TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:47:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2021-10-13 19:47:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 6080. [2021-10-13 19:47:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6074 states have (on average 3.3539677313137966) internal successors, (20372), 6079 states have internal predecessors, (20372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 20372 transitions. [2021-10-13 19:47:55,882 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 20372 transitions. Word has length 23 [2021-10-13 19:47:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:55,882 INFO L470 AbstractCegarLoop]: Abstraction has 6080 states and 20372 transitions. [2021-10-13 19:47:55,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 20372 transitions. [2021-10-13 19:47:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:55,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:55,885 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:55,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:56,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-13 19:47:56,087 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:47:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash 506744347, now seen corresponding path program 20 times [2021-10-13 19:47:56,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:56,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388058543] [2021-10-13 19:47:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:56,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:47:56,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:56,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388058543] [2021-10-13 19:47:56,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388058543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:56,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443959805] [2021-10-13 19:47:56,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:47:56,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:56,263 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:47:56,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 19:47:57,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:47:57,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:57,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 19:47:57,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:47:57,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:58,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:47:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:58,292 INFO L354 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2021-10-13 19:47:58,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-10-13 19:47:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:58,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443959805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:58,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:58,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 22 [2021-10-13 19:47:58,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066377952] [2021-10-13 19:47:58,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:47:58,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:58,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:47:58,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:47:58,757 INFO L87 Difference]: Start difference. First operand 6080 states and 20372 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:00,240 INFO L93 Difference]: Finished difference Result 8309 states and 26886 transitions. [2021-10-13 19:48:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:48:00,244 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:00,264 INFO L225 Difference]: With dead ends: 8309 [2021-10-13 19:48:00,264 INFO L226 Difference]: Without dead ends: 8237 [2021-10-13 19:48:00,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1230.4ms TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:48:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2021-10-13 19:48:00,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 6212. [2021-10-13 19:48:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6206 states have (on average 3.3495004834031583) internal successors, (20787), 6211 states have internal predecessors, (20787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 20787 transitions. [2021-10-13 19:48:00,466 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 20787 transitions. Word has length 23 [2021-10-13 19:48:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:00,467 INFO L470 AbstractCegarLoop]: Abstraction has 6212 states and 20787 transitions. [2021-10-13 19:48:00,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 20787 transitions. [2021-10-13 19:48:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:00,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:00,471 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:00,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:00,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:00,672 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2024160463, now seen corresponding path program 21 times [2021-10-13 19:48:00,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:00,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249886014] [2021-10-13 19:48:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:00,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:48:00,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:00,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249886014] [2021-10-13 19:48:00,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249886014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:00,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651395544] [2021-10-13 19:48:00,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:48:00,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:00,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:00,853 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:00,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 19:48:02,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:48:02,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:02,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:48:02,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:02,771 INFO L354 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2021-10-13 19:48:02,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 48 [2021-10-13 19:48:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:02,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651395544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:02,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:02,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 19 [2021-10-13 19:48:02,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081504963] [2021-10-13 19:48:02,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:48:02,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:48:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:48:02,933 INFO L87 Difference]: Start difference. First operand 6212 states and 20787 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:03,530 INFO L93 Difference]: Finished difference Result 9009 states and 29426 transitions. [2021-10-13 19:48:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:48:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:03,552 INFO L225 Difference]: With dead ends: 9009 [2021-10-13 19:48:03,552 INFO L226 Difference]: Without dead ends: 8949 [2021-10-13 19:48:03,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 406.8ms TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:48:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2021-10-13 19:48:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 5792. [2021-10-13 19:48:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5792 states, 5786 states have (on average 3.3316626339440027) internal successors, (19277), 5791 states have internal predecessors, (19277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5792 states to 5792 states and 19277 transitions. [2021-10-13 19:48:03,690 INFO L78 Accepts]: Start accepts. Automaton has 5792 states and 19277 transitions. Word has length 23 [2021-10-13 19:48:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:03,690 INFO L470 AbstractCegarLoop]: Abstraction has 5792 states and 19277 transitions. [2021-10-13 19:48:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5792 states and 19277 transitions. [2021-10-13 19:48:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:03,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:03,694 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:03,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:03,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-13 19:48:03,895 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:03,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1908869293, now seen corresponding path program 22 times [2021-10-13 19:48:03,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:03,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011891046] [2021-10-13 19:48:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:03,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:48:04,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:04,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011891046] [2021-10-13 19:48:04,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011891046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:04,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650706764] [2021-10-13 19:48:04,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:48:04,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:04,130 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:04,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 19:48:05,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:48:05,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:05,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:48:05,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:05,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 19:48:06,200 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:48:06,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 61 [2021-10-13 19:48:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:06,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650706764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:06,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:06,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 19 [2021-10-13 19:48:06,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542794606] [2021-10-13 19:48:06,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:48:06,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:06,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:48:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:48:06,304 INFO L87 Difference]: Start difference. First operand 5792 states and 19277 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:06,883 INFO L93 Difference]: Finished difference Result 8679 states and 28167 transitions. [2021-10-13 19:48:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:48:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:06,904 INFO L225 Difference]: With dead ends: 8679 [2021-10-13 19:48:06,904 INFO L226 Difference]: Without dead ends: 8619 [2021-10-13 19:48:06,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 429.4ms TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:48:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8619 states. [2021-10-13 19:48:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8619 to 5754. [2021-10-13 19:48:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 5748 states have (on average 3.33107167710508) internal successors, (19147), 5753 states have internal predecessors, (19147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 19147 transitions. [2021-10-13 19:48:07,029 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 19147 transitions. Word has length 23 [2021-10-13 19:48:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:07,030 INFO L470 AbstractCegarLoop]: Abstraction has 5754 states and 19147 transitions. [2021-10-13 19:48:07,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 19147 transitions. [2021-10-13 19:48:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:07,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:07,033 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:07,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:07,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 19:48:07,234 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1904727073, now seen corresponding path program 23 times [2021-10-13 19:48:07,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:07,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091185166] [2021-10-13 19:48:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:07,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:48:07,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:07,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091185166] [2021-10-13 19:48:07,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091185166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:07,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354830558] [2021-10-13 19:48:07,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:48:07,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:07,441 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:07,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 19:48:08,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:48:08,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:48:08,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:09,479 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:48:09,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 64 [2021-10-13 19:48:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:48:09,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354830558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:09,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:09,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:48:09,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984595070] [2021-10-13 19:48:09,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:48:09,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:48:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:48:09,527 INFO L87 Difference]: Start difference. First operand 5754 states and 19147 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:10,223 INFO L93 Difference]: Finished difference Result 8323 states and 26901 transitions. [2021-10-13 19:48:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:48:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:10,243 INFO L225 Difference]: With dead ends: 8323 [2021-10-13 19:48:10,243 INFO L226 Difference]: Without dead ends: 8271 [2021-10-13 19:48:10,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 362.3ms TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:48:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2021-10-13 19:48:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 5810. [2021-10-13 19:48:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5804 states have (on average 3.330806340454859) internal successors, (19332), 5809 states have internal predecessors, (19332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 19332 transitions. [2021-10-13 19:48:10,445 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 19332 transitions. Word has length 23 [2021-10-13 19:48:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:10,445 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 19332 transitions. [2021-10-13 19:48:10,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 19332 transitions. [2021-10-13 19:48:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:10,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:10,449 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:10,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:10,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-13 19:48:10,650 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash 647972089, now seen corresponding path program 24 times [2021-10-13 19:48:10,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:10,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379570658] [2021-10-13 19:48:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:10,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:11,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:11,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379570658] [2021-10-13 19:48:11,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379570658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:11,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526724964] [2021-10-13 19:48:11,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:48:11,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:11,857 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:11,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 19:48:13,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:48:13,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:48:13,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:13,771 INFO L354 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2021-10-13 19:48:13,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-10-13 19:48:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:48:13,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526724964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:13,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:13,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-13 19:48:13,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153420939] [2021-10-13 19:48:13,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:48:13,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:48:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:48:13,956 INFO L87 Difference]: Start difference. First operand 5810 states and 19332 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:17,257 INFO L93 Difference]: Finished difference Result 8931 states and 28852 transitions. [2021-10-13 19:48:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:48:17,258 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:17,277 INFO L225 Difference]: With dead ends: 8931 [2021-10-13 19:48:17,278 INFO L226 Difference]: Without dead ends: 8931 [2021-10-13 19:48:17,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2528.3ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:48:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8931 states. [2021-10-13 19:48:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8931 to 5740. [2021-10-13 19:48:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5734 states have (on average 3.339204743634461) internal successors, (19147), 5739 states have internal predecessors, (19147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 19147 transitions. [2021-10-13 19:48:17,406 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 19147 transitions. Word has length 23 [2021-10-13 19:48:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:17,407 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 19147 transitions. [2021-10-13 19:48:17,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 19147 transitions. [2021-10-13 19:48:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:17,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:17,411 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:17,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:17,616 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:17,617 INFO L82 PathProgramCache]: Analyzing trace with hash 962265965, now seen corresponding path program 25 times [2021-10-13 19:48:17,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:17,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961587704] [2021-10-13 19:48:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:17,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:18,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:18,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961587704] [2021-10-13 19:48:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961587704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:18,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151944198] [2021-10-13 19:48:18,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:48:18,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:18,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:18,668 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:18,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 19:48:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:48:20,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:20,905 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:48:20,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 62 [2021-10-13 19:48:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:21,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151944198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:21,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:21,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-13 19:48:21,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083288278] [2021-10-13 19:48:21,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:48:21,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:48:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:48:21,064 INFO L87 Difference]: Start difference. First operand 5740 states and 19147 transitions. Second operand has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:23,325 INFO L93 Difference]: Finished difference Result 7182 states and 23685 transitions. [2021-10-13 19:48:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:48:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:23,341 INFO L225 Difference]: With dead ends: 7182 [2021-10-13 19:48:23,341 INFO L226 Difference]: Without dead ends: 7182 [2021-10-13 19:48:23,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2102.4ms TimeCoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:48:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-10-13 19:48:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 5890. [2021-10-13 19:48:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5884 states have (on average 3.346702923181509) internal successors, (19692), 5889 states have internal predecessors, (19692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 19692 transitions. [2021-10-13 19:48:23,452 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 19692 transitions. Word has length 23 [2021-10-13 19:48:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:23,453 INFO L470 AbstractCegarLoop]: Abstraction has 5890 states and 19692 transitions. [2021-10-13 19:48:23,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 19692 transitions. [2021-10-13 19:48:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:23,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:23,456 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:23,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:23,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-10-13 19:48:23,657 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash 962265966, now seen corresponding path program 11 times [2021-10-13 19:48:23,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:23,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602511227] [2021-10-13 19:48:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:23,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:24,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:24,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602511227] [2021-10-13 19:48:24,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602511227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:24,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487973532] [2021-10-13 19:48:24,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:48:24,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:24,619 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:24,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 19:48:26,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:48:26,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:26,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:48:26,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:26,833 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:48:26,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 62 [2021-10-13 19:48:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:48:26,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487973532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:26,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:26,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-13 19:48:26,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747540579] [2021-10-13 19:48:26,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:48:26,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:48:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:48:26,984 INFO L87 Difference]: Start difference. First operand 5890 states and 19692 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:29,259 INFO L93 Difference]: Finished difference Result 7280 states and 23871 transitions. [2021-10-13 19:48:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:48:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:29,278 INFO L225 Difference]: With dead ends: 7280 [2021-10-13 19:48:29,279 INFO L226 Difference]: Without dead ends: 7200 [2021-10-13 19:48:29,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1984.6ms TimeCoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:48:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2021-10-13 19:48:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 5710. [2021-10-13 19:48:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5704 states have (on average 3.3385343618513326) internal successors, (19043), 5709 states have internal predecessors, (19043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19043 transitions. [2021-10-13 19:48:29,388 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19043 transitions. Word has length 23 [2021-10-13 19:48:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:29,388 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19043 transitions. [2021-10-13 19:48:29,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19043 transitions. [2021-10-13 19:48:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:29,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:29,391 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:29,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:29,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:29,592 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 958123745, now seen corresponding path program 26 times [2021-10-13 19:48:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:29,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161154620] [2021-10-13 19:48:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:29,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:30,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:30,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161154620] [2021-10-13 19:48:30,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161154620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:30,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141988549] [2021-10-13 19:48:30,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:48:30,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:30,325 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:30,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 19:48:31,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:48:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:31,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:48:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:32,662 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:48:32,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 64 [2021-10-13 19:48:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:32,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141988549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:32,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:32,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-13 19:48:32,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930849495] [2021-10-13 19:48:32,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:48:32,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:48:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:48:32,726 INFO L87 Difference]: Start difference. First operand 5710 states and 19043 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:34,496 INFO L93 Difference]: Finished difference Result 6962 states and 22997 transitions. [2021-10-13 19:48:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:48:34,496 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:34,512 INFO L225 Difference]: With dead ends: 6962 [2021-10-13 19:48:34,512 INFO L226 Difference]: Without dead ends: 6962 [2021-10-13 19:48:34,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1518.1ms TimeCoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:48:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2021-10-13 19:48:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 5802. [2021-10-13 19:48:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 5796 states have (on average 3.347135955831608) internal successors, (19400), 5801 states have internal predecessors, (19400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 19400 transitions. [2021-10-13 19:48:34,622 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 19400 transitions. Word has length 23 [2021-10-13 19:48:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:34,622 INFO L470 AbstractCegarLoop]: Abstraction has 5802 states and 19400 transitions. [2021-10-13 19:48:34,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 19400 transitions. [2021-10-13 19:48:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:48:34,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:34,625 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:34,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:34,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:34,826 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash 958123746, now seen corresponding path program 12 times [2021-10-13 19:48:34,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:34,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454635191] [2021-10-13 19:48:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:34,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:35,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:35,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454635191] [2021-10-13 19:48:35,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454635191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:35,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254317066] [2021-10-13 19:48:35,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:48:35,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:35,769 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:35,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 19:48:37,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:48:37,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:37,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:48:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:37,858 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:48:37,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:48:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:48:37,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254317066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:37,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:37,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-13 19:48:37,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464501349] [2021-10-13 19:48:37,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:48:37,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:48:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:48:37,907 INFO L87 Difference]: Start difference. First operand 5802 states and 19400 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:41,513 INFO L93 Difference]: Finished difference Result 9406 states and 30417 transitions. [2021-10-13 19:48:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 19:48:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:48:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:41,535 INFO L225 Difference]: With dead ends: 9406 [2021-10-13 19:48:41,536 INFO L226 Difference]: Without dead ends: 9350 [2021-10-13 19:48:41,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 2563.2ms TimeCoverageRelationStatistics Valid=307, Invalid=2773, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:48:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2021-10-13 19:48:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 5418. [2021-10-13 19:48:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5412 states have (on average 3.3388765705838876) internal successors, (18070), 5417 states have internal predecessors, (18070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 18070 transitions. [2021-10-13 19:48:41,672 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 18070 transitions. Word has length 23 [2021-10-13 19:48:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:41,673 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 18070 transitions. [2021-10-13 19:48:41,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 18070 transitions. [2021-10-13 19:48:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:48:41,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:41,676 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:41,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:41,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-10-13 19:48:41,877 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:41,878 INFO L82 PathProgramCache]: Analyzing trace with hash -998352722, now seen corresponding path program 27 times [2021-10-13 19:48:41,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:41,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484988701] [2021-10-13 19:48:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:41,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:48:41,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:41,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484988701] [2021-10-13 19:48:41,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484988701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:41,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623016295] [2021-10-13 19:48:41,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:48:41,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:41,948 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:41,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 19:48:43,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 19:48:43,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:43,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:48:43,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:48:43,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623016295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:43,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:43,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 14 [2021-10-13 19:48:43,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088605432] [2021-10-13 19:48:43,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:48:43,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:48:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:48:43,903 INFO L87 Difference]: Start difference. First operand 5418 states and 18070 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:44,284 INFO L93 Difference]: Finished difference Result 7240 states and 23264 transitions. [2021-10-13 19:48:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:48:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2021-10-13 19:48:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:44,297 INFO L225 Difference]: With dead ends: 7240 [2021-10-13 19:48:44,297 INFO L226 Difference]: Without dead ends: 5531 [2021-10-13 19:48:44,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 260.5ms TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:48:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-10-13 19:48:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 4979. [2021-10-13 19:48:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4973 states have (on average 3.49627991152222) internal successors, (17387), 4978 states have internal predecessors, (17387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 17387 transitions. [2021-10-13 19:48:44,396 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 17387 transitions. Word has length 24 [2021-10-13 19:48:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:44,396 INFO L470 AbstractCegarLoop]: Abstraction has 4979 states and 17387 transitions. [2021-10-13 19:48:44,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 17387 transitions. [2021-10-13 19:48:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:48:44,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:44,399 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:44,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:44,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:44,600 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1471659182, now seen corresponding path program 12 times [2021-10-13 19:48:44,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:44,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331187590] [2021-10-13 19:48:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:44,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:45,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:45,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331187590] [2021-10-13 19:48:45,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331187590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:45,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303979320] [2021-10-13 19:48:45,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:48:45,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:45,482 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:45,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 19:48:47,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 19:48:47,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:47,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 19:48:47,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:47,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:48:47,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:48:47,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:48:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:48,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303979320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:48,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:48,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2021-10-13 19:48:48,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665948332] [2021-10-13 19:48:48,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 19:48:48,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 19:48:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:48:48,212 INFO L87 Difference]: Start difference. First operand 4979 states and 17387 transitions. Second operand has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:57,198 INFO L93 Difference]: Finished difference Result 26198 states and 89066 transitions. [2021-10-13 19:48:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 19:48:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-10-13 19:48:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:57,280 INFO L225 Difference]: With dead ends: 26198 [2021-10-13 19:48:57,280 INFO L226 Difference]: Without dead ends: 25448 [2021-10-13 19:48:57,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 7100.9ms TimeCoverageRelationStatistics Valid=1360, Invalid=6650, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 19:48:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25448 states. [2021-10-13 19:48:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25448 to 15647. [2021-10-13 19:48:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15647 states, 15641 states have (on average 3.8358800588197686) internal successors, (59997), 15646 states have internal predecessors, (59997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15647 states to 15647 states and 59997 transitions. [2021-10-13 19:48:57,812 INFO L78 Accepts]: Start accepts. Automaton has 15647 states and 59997 transitions. Word has length 26 [2021-10-13 19:48:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:57,813 INFO L470 AbstractCegarLoop]: Abstraction has 15647 states and 59997 transitions. [2021-10-13 19:48:57,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 15647 states and 59997 transitions. [2021-10-13 19:48:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:48:57,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:57,818 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:57,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-13 19:48:58,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-10-13 19:48:58,019 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:48:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:58,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1101104711, now seen corresponding path program 13 times [2021-10-13 19:48:58,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:58,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500459937] [2021-10-13 19:48:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:58,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:48:58,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:58,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500459937] [2021-10-13 19:48:58,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500459937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:58,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813437567] [2021-10-13 19:48:58,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:48:58,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:58,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:58,178 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:48:58,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 19:48:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:59,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:48:59,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:49:00,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813437567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:00,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:00,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2021-10-13 19:49:00,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723623763] [2021-10-13 19:49:00,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:49:00,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:49:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:49:00,251 INFO L87 Difference]: Start difference. First operand 15647 states and 59997 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:01,141 INFO L93 Difference]: Finished difference Result 20679 states and 76289 transitions. [2021-10-13 19:49:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:49:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:49:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:01,207 INFO L225 Difference]: With dead ends: 20679 [2021-10-13 19:49:01,207 INFO L226 Difference]: Without dead ends: 20659 [2021-10-13 19:49:01,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 391.4ms TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:49:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20659 states. [2021-10-13 19:49:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20659 to 16749. [2021-10-13 19:49:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16749 states, 16743 states have (on average 3.8214179059905633) internal successors, (63982), 16748 states have internal predecessors, (63982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 63982 transitions. [2021-10-13 19:49:02,082 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 63982 transitions. Word has length 26 [2021-10-13 19:49:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:02,083 INFO L470 AbstractCegarLoop]: Abstraction has 16749 states and 63982 transitions. [2021-10-13 19:49:02,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 63982 transitions. [2021-10-13 19:49:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:49:02,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:02,088 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:02,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 19:49:02,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:02,294 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:49:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1101104710, now seen corresponding path program 13 times [2021-10-13 19:49:02,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:02,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59698562] [2021-10-13 19:49:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:02,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:03,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:03,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59698562] [2021-10-13 19:49:03,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59698562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:03,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656746343] [2021-10-13 19:49:03,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:49:03,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:03,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:03,778 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:49:03,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 19:49:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 19:49:05,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-13 19:49:05,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:49:05,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:49:05,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:49:05,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:49:06,012 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:49:06,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:49:06,140 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:49:06,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:49:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:07,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656746343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:07,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:07,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 19:49:07,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136890755] [2021-10-13 19:49:07,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 19:49:07,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 19:49:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:49:07,298 INFO L87 Difference]: Start difference. First operand 16749 states and 63982 transitions. Second operand has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:14,968 INFO L93 Difference]: Finished difference Result 35626 states and 129919 transitions. [2021-10-13 19:49:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 19:49:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-10-13 19:49:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:15,094 INFO L225 Difference]: With dead ends: 35626 [2021-10-13 19:49:15,095 INFO L226 Difference]: Without dead ends: 35518 [2021-10-13 19:49:15,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 6854.6ms TimeCoverageRelationStatistics Valid=688, Invalid=4424, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 19:49:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35518 states. [2021-10-13 19:49:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35518 to 24355. [2021-10-13 19:49:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24355 states, 24349 states have (on average 3.8967924760770463) internal successors, (94883), 24354 states have internal predecessors, (94883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24355 states to 24355 states and 94883 transitions. [2021-10-13 19:49:16,571 INFO L78 Accepts]: Start accepts. Automaton has 24355 states and 94883 transitions. Word has length 26 [2021-10-13 19:49:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:16,571 INFO L470 AbstractCegarLoop]: Abstraction has 24355 states and 94883 transitions. [2021-10-13 19:49:16,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 24355 states and 94883 transitions. [2021-10-13 19:49:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:49:16,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:16,580 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:16,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-13 19:49:16,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-13 19:49:16,796 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:49:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1097141051, now seen corresponding path program 14 times [2021-10-13 19:49:16,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:16,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009934611] [2021-10-13 19:49:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:16,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:49:17,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:17,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009934611] [2021-10-13 19:49:17,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009934611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:17,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309396175] [2021-10-13 19:49:17,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:49:17,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:17,086 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:49:17,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 19:49:18,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:49:18,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:18,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 19:49:18,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:19,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:49:19,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:49:19,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:49:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:19,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309396175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:19,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:19,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14] total 20 [2021-10-13 19:49:19,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583157083] [2021-10-13 19:49:19,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:49:19,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:19,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:49:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:49:19,642 INFO L87 Difference]: Start difference. First operand 24355 states and 94883 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:22,261 INFO L93 Difference]: Finished difference Result 35122 states and 131820 transitions. [2021-10-13 19:49:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 19:49:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-10-13 19:49:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:22,397 INFO L225 Difference]: With dead ends: 35122 [2021-10-13 19:49:22,397 INFO L226 Difference]: Without dead ends: 34532 [2021-10-13 19:49:22,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1286.4ms TimeCoverageRelationStatistics Valid=234, Invalid=1658, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:49:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34532 states. [2021-10-13 19:49:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34532 to 29921. [2021-10-13 19:49:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29921 states, 29915 states have (on average 3.7988968744776868) internal successors, (113644), 29920 states have internal predecessors, (113644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29921 states to 29921 states and 113644 transitions. [2021-10-13 19:49:23,377 INFO L78 Accepts]: Start accepts. Automaton has 29921 states and 113644 transitions. Word has length 26 [2021-10-13 19:49:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:23,377 INFO L470 AbstractCegarLoop]: Abstraction has 29921 states and 113644 transitions. [2021-10-13 19:49:23,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 29921 states and 113644 transitions. [2021-10-13 19:49:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:49:23,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:23,384 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:23,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-13 19:49:23,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-13 19:49:23,585 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:49:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1097141050, now seen corresponding path program 14 times [2021-10-13 19:49:23,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:23,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816121186] [2021-10-13 19:49:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:23,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:25,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:25,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816121186] [2021-10-13 19:49:25,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816121186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:25,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785124055] [2021-10-13 19:49:25,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:49:25,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:25,168 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:49:25,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 19:49:27,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:49:27,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:27,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 19:49:27,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:27,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:49:27,495 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:49:27,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:49:27,652 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:49:27,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:49:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:28,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785124055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:28,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:28,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-13 19:49:28,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698495491] [2021-10-13 19:49:28,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 19:49:28,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 19:49:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:49:28,999 INFO L87 Difference]: Start difference. First operand 29921 states and 113644 transitions. Second operand has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:45,495 INFO L93 Difference]: Finished difference Result 62496 states and 232976 transitions. [2021-10-13 19:49:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 19:49:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-10-13 19:49:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:46,014 INFO L225 Difference]: With dead ends: 62496 [2021-10-13 19:49:46,015 INFO L226 Difference]: Without dead ends: 62302 [2021-10-13 19:49:46,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 12651.9ms TimeCoverageRelationStatistics Valid=1002, Invalid=7370, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 19:49:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62302 states. [2021-10-13 19:49:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62302 to 47221. [2021-10-13 19:49:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47221 states, 47215 states have (on average 3.9192629460976383) internal successors, (185048), 47220 states have internal predecessors, (185048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47221 states to 47221 states and 185048 transitions. [2021-10-13 19:49:48,148 INFO L78 Accepts]: Start accepts. Automaton has 47221 states and 185048 transitions. Word has length 26 [2021-10-13 19:49:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 47221 states and 185048 transitions. [2021-10-13 19:49:48,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 47221 states and 185048 transitions. [2021-10-13 19:49:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:49:48,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:48,169 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:48,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-13 19:49:48,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:48,370 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:49:48,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1583031087, now seen corresponding path program 15 times [2021-10-13 19:49:48,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:48,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838082486] [2021-10-13 19:49:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:48,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:49:48,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:48,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838082486] [2021-10-13 19:49:48,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838082486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:48,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432640678] [2021-10-13 19:49:48,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:49:48,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:48,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:48,724 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:49:48,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 19:49:50,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 19:49:50,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:50,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:49:50,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 19:49:50,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432640678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:50,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:50,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 19:49:50,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502325926] [2021-10-13 19:49:50,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:49:50,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:49:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:49:50,865 INFO L87 Difference]: Start difference. First operand 47221 states and 185048 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:51,984 INFO L93 Difference]: Finished difference Result 66688 states and 256094 transitions. [2021-10-13 19:49:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:49:51,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 26 [2021-10-13 19:49:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:52,322 INFO L225 Difference]: With dead ends: 66688 [2021-10-13 19:49:52,322 INFO L226 Difference]: Without dead ends: 66538 [2021-10-13 19:49:52,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:49:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66538 states. [2021-10-13 19:49:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66538 to 55840. [2021-10-13 19:49:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55840 states, 55834 states have (on average 3.919421857649461) internal successors, (218837), 55839 states have internal predecessors, (218837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55840 states to 55840 states and 218837 transitions. [2021-10-13 19:49:54,897 INFO L78 Accepts]: Start accepts. Automaton has 55840 states and 218837 transitions. Word has length 26 [2021-10-13 19:49:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:54,898 INFO L470 AbstractCegarLoop]: Abstraction has 55840 states and 218837 transitions. [2021-10-13 19:49:54,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 55840 states and 218837 transitions. [2021-10-13 19:49:54,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:49:54,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:54,912 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:54,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-13 19:49:55,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:55,128 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-13 19:49:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1556061957, now seen corresponding path program 16 times [2021-10-13 19:49:55,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:55,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472738760] [2021-10-13 19:49:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:55,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:56,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:56,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472738760] [2021-10-13 19:49:56,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472738760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:56,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811793815] [2021-10-13 19:49:56,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:49:56,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:56,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:56,053 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:49:56,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 19:49:57,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:49:57,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:57,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:49:57,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:49:58,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811793815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:58,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:58,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-13 19:49:58,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410251387] [2021-10-13 19:49:58,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:49:58,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:49:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:49:58,387 INFO L87 Difference]: Start difference. First operand 55840 states and 218837 transitions. Second operand has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 19:50:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:50:00,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:00,702 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:50:00,711 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:50:00,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-10-13 19:50:00,871 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). [2021-10-13 19:50:00,876 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,877 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:50:00,878 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,879 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:50:00,903 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:50:00,903 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:50:00,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:50:00 BasicIcfg [2021-10-13 19:50:00,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:50:00,908 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-13 19:50:00,909 INFO L168 Benchmark]: Toolchain (without parser) took 345234.71 ms. Allocated memory was 161.5 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 136.6 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,909 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 113.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:50:00,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.94 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 125.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.21 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,910 INFO L168 Benchmark]: Boogie Preprocessor took 73.85 ms. Allocated memory is still 161.5 MB. Free memory was 123.3 MB in the beginning and 121.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,910 INFO L168 Benchmark]: RCFGBuilder took 1099.85 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 128.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,911 INFO L168 Benchmark]: TraceAbstraction took 343496.94 ms. Allocated memory was 161.5 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 128.9 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-10-13 19:50:00,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 113.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 457.94 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 125.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 92.21 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 123.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.85 ms. Allocated memory is still 161.5 MB. Free memory was 123.3 MB in the beginning and 121.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1099.85 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 128.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 343496.94 ms. Allocated memory was 161.5 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 128.9 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7497.2ms, 137 PlacesBefore, 44 PlacesAfterwards, 137 TransitionsBefore, 38 TransitionsAfterwards, 1464 CoEnabledTransitionPairs, 8 FixpointIterations, 72 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 126 TotalNumberOfCompositions, 5168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3218, positive: 3001, positive conditional: 0, positive unconditional: 3001, negative: 217, negative conditional: 0, negative unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1060, positive: 1021, positive conditional: 0, positive unconditional: 1021, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1060, positive: 1011, positive conditional: 0, positive unconditional: 1011, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 175, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3218, positive: 1980, positive conditional: 0, positive unconditional: 1980, negative: 178, negative conditional: 0, negative unconditional: 178, unknown: 1060, unknown conditional: 0, unknown unconditional: 1060] , Statistics on independence cache: Total cache size (in pairs): 186, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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 - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (55840states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 162 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 343229.3ms, OverallIterations: 83, TraceHistogramMax: 4, EmptinessCheckTime: 313.1ms, AutomataDifference: 155929.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7605.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2682 SDtfs, 13416 SDslu, 25301 SDs, 0 SdLazy, 59124 SolverSat, 3899 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54149.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3227 GetRequests, 777 SyntacticMatches, 12 SemanticMatches, 2438 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20599 ImplicationChecksByTransitivity, 118070.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55840occurred in iteration=82, InterpolantAutomatonStates: 1700, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18192.5ms AutomataMinimizationTime, 82 MinimizatonAttempts, 157353 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 871.2ms SsaConstructionTime, 5636.7ms SatisfiabilityAnalysisTime, 77744.8ms InterpolantComputationTime, 3073 NumberOfCodeBlocks, 3059 NumberOfCodeBlocksAsserted, 248 NumberOfCheckSat, 2915 ConstructedInterpolants, 165 QuantifiedInterpolants, 73671 SizeOfPredicates, 1096 NumberOfNonLiveVariables, 15426 ConjunctsInSsa, 3206 ConjunctsInUnsatCore, 158 InterpolantComputations, 13 PerfectInterpolantSequences, 484/2248 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown