/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-bad-three-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:58:10,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:58:10,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:58:10,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 14:58:10,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 14:58:10,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 14:58:10,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 14:58:10,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 14:58:10,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 14:58:10,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 14:58:10,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 14:58:10,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 14:58:10,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 14:58:10,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 14:58:10,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 14:58:10,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 14:58:10,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 14:58:10,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 14:58:10,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 14:58:10,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 14:58:10,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 14:58:10,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 14:58:10,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 14:58:10,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 14:58:10,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 14:58:10,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 14:58:10,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 14:58:10,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 14:58:10,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 14:58:10,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 14:58:10,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 14:58:10,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 14:58:10,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 14:58:10,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 14:58:10,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 14:58:10,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 14:58:10,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 14:58:10,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 14:58:10,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:58:10,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:58:10,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:58:10,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:58:10,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:58:10,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:58:10,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:58:10,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:58:10,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:58:10,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:58:10,317 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:58:10,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:58:10,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:58:10,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:58:10,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:58:10,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:58:10,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:58:10,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:58:10,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:58:10,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:58:10,319 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:58:10,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:58:10,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:58:10,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:58:10,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:58:10,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:58:10,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:58:10,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:58:10,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:10,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:58:10,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:58:10,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:58:10,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:58:10,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:58:10,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:58:10,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:58:10,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:58:10,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:58:10,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:58:10,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:58:10,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:58:10,770 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:58:10,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 14:58:10,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acb6c6636/8de253e236bd4b3c8bf9c83ba6c7e80f/FLAGba3ad1064 [2021-10-07 14:58:11,622 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:58:11,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 14:58:11,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acb6c6636/8de253e236bd4b3c8bf9c83ba6c7e80f/FLAGba3ad1064 [2021-10-07 14:58:11,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acb6c6636/8de253e236bd4b3c8bf9c83ba6c7e80f [2021-10-07 14:58:11,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:58:11,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:58:11,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:11,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:58:11,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:58:11,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:11" (1/1) ... [2021-10-07 14:58:11,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9d4280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:11, skipping insertion in model container [2021-10-07 14:58:11,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:11" (1/1) ... [2021-10-07 14:58:11,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:58:12,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:58:12,195 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-bad-three-array-sum-alt.wvr.c[2352,2365] [2021-10-07 14:58:12,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:12,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:58:12,254 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-bad-three-array-sum-alt.wvr.c[2352,2365] [2021-10-07 14:58:12,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:12,289 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:58:12,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12 WrapperNode [2021-10-07 14:58:12,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:12,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:12,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:58:12,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:58:12,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:12,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:58:12,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:58:12,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:58:12,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:58:12,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:58:12,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:58:12,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:58:12,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:12,449 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) [2021-10-07 14:58:12,456 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 [2021-10-07 14:58:12,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:58:12,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:58:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:58:12,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:58:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 14:58:12,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 14:58:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:58:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:58:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:58:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:58:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:58:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:58:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:58:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:58:12,524 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:58:13,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:58:13,348 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-07 14:58:13,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:13 BoogieIcfgContainer [2021-10-07 14:58:13,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:58:13,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:58:13,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:58:13,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:58:13,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:58:11" (1/3) ... [2021-10-07 14:58:13,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c7eab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:13, skipping insertion in model container [2021-10-07 14:58:13,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (2/3) ... [2021-10-07 14:58:13,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c7eab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:13, skipping insertion in model container [2021-10-07 14:58:13,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:13" (3/3) ... [2021-10-07 14:58:13,363 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 14:58:13,369 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:58:13,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:58:13,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-07 14:58:13,370 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:58:13,434 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,436 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,437 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,438 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,451 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,452 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,475 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,479 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,479 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,480 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,480 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,481 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,482 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,486 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,492 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,492 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,492 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,493 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,495 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,495 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,496 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,496 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,496 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,496 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,496 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,497 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,497 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,497 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,497 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,500 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,503 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,503 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,503 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,504 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,506 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,506 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,506 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,506 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,506 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,507 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,507 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,508 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,508 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,508 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,508 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,509 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,509 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,509 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,509 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,510 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,510 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,510 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,510 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,511 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,511 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,511 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,511 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,511 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,512 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,512 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,512 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,512 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,513 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,515 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,515 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,516 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,521 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,522 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,531 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,570 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 14:58:13,655 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:58:13,670 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 [2021-10-07 14:58:13,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2021-10-07 14:58:13,712 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:58:13,736 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 252 transitions, 528 flow [2021-10-07 14:58:13,742 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 252 transitions, 528 flow [2021-10-07 14:58:13,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 243 places, 252 transitions, 528 flow [2021-10-07 14:58:13,935 INFO L129 PetriNetUnfolder]: 19/249 cut-off events. [2021-10-07 14:58:13,935 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 14:58:13,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 19/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2021-10-07 14:58:13,953 INFO L116 LiptonReduction]: Number of co-enabled transitions 4722 [2021-10-07 14:58:24,142 INFO L131 LiptonReduction]: Checked pairs total: 6228 [2021-10-07 14:58:24,143 INFO L133 LiptonReduction]: Total number of compositions: 280 [2021-10-07 14:58:24,153 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 53 transitions, 130 flow [2021-10-07 14:58:24,229 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1152 states, 970 states have (on average 3.9587628865979383) internal successors, (3840), 1151 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 1152 states, 970 states have (on average 3.9587628865979383) internal successors, (3840), 1151 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:58:24,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:24,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:58:24,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:24,255 INFO L82 PathProgramCache]: Analyzing trace with hash 31048, now seen corresponding path program 1 times [2021-10-07 14:58:24,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:24,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88322294] [2021-10-07 14:58:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:24,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:24,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:24,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88322294] [2021-10-07 14:58:24,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88322294] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:24,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:24,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:24,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824251434] [2021-10-07 14:58:24,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:24,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:24,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:24,554 INFO L87 Difference]: Start difference. First operand has 1152 states, 970 states have (on average 3.9587628865979383) internal successors, (3840), 1151 states have internal predecessors, (3840), 0 states have call successors, (0), 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) [2021-10-07 14:58:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:24,707 INFO L93 Difference]: Finished difference Result 2297 states and 7673 transitions. [2021-10-07 14:58:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:24,709 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 [2021-10-07 14:58:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:24,779 INFO L225 Difference]: With dead ends: 2297 [2021-10-07 14:58:24,780 INFO L226 Difference]: Without dead ends: 2297 [2021-10-07 14:58:24,781 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 [2021-10-07 14:58:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-10-07 14:58:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1155. [2021-10-07 14:58:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 973 states have (on average 3.9527235354573484) internal successors, (3846), 1154 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 3846 transitions. [2021-10-07 14:58:24,969 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 3846 transitions. Word has length 2 [2021-10-07 14:58:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:24,969 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 3846 transitions. [2021-10-07 14:58:24,970 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) [2021-10-07 14:58:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 3846 transitions. [2021-10-07 14:58:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:58:24,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:24,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:58:24,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:58:24,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:24,972 INFO L82 PathProgramCache]: Analyzing trace with hash 964148, now seen corresponding path program 1 times [2021-10-07 14:58:24,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:24,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906763165] [2021-10-07 14:58:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:24,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:25,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:25,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906763165] [2021-10-07 14:58:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906763165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:25,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873782215] [2021-10-07 14:58:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:25,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:25,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:25,043 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) [2021-10-07 14:58:25,053 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 [2021-10-07 14:58:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:25,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:25,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873782215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:25,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:25,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:58:25,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466125221] [2021-10-07 14:58:25,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:25,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:25,171 INFO L87 Difference]: Start difference. First operand 1155 states and 3846 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) [2021-10-07 14:58:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:25,298 INFO L93 Difference]: Finished difference Result 3442 states and 11509 transitions. [2021-10-07 14:58:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:25,299 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 [2021-10-07 14:58:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:25,347 INFO L225 Difference]: With dead ends: 3442 [2021-10-07 14:58:25,347 INFO L226 Difference]: Without dead ends: 3442 [2021-10-07 14:58:25,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-10-07 14:58:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1158. [2021-10-07 14:58:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 976 states have (on average 3.949795081967213) internal successors, (3855), 1157 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3855 transitions. [2021-10-07 14:58:25,569 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3855 transitions. Word has length 3 [2021-10-07 14:58:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:25,570 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 3855 transitions. [2021-10-07 14:58:25,570 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) [2021-10-07 14:58:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3855 transitions. [2021-10-07 14:58:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:58:25,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:25,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:58:25,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:58:25,785 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 [2021-10-07 14:58:25,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:25,788 INFO L82 PathProgramCache]: Analyzing trace with hash 964174, now seen corresponding path program 1 times [2021-10-07 14:58:25,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:25,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411235514] [2021-10-07 14:58:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:25,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:25,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:25,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411235514] [2021-10-07 14:58:25,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411235514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:25,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:25,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:58:25,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096786599] [2021-10-07 14:58:25,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:25,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:25,842 INFO L87 Difference]: Start difference. First operand 1158 states and 3855 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2021-10-07 14:58:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:25,885 INFO L93 Difference]: Finished difference Result 1155 states and 3849 transitions. [2021-10-07 14:58:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:25,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2021-10-07 14:58:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:25,898 INFO L225 Difference]: With dead ends: 1155 [2021-10-07 14:58:25,898 INFO L226 Difference]: Without dead ends: 1155 [2021-10-07 14:58:25,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2021-10-07 14:58:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2021-10-07 14:58:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 976 states have (on average 3.9436475409836067) internal successors, (3849), 1154 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 3849 transitions. [2021-10-07 14:58:25,952 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 3849 transitions. Word has length 3 [2021-10-07 14:58:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:25,953 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 3849 transitions. [2021-10-07 14:58:25,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2021-10-07 14:58:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 3849 transitions. [2021-10-07 14:58:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:25,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:25,954 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:58:25,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:58:25,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 29890248, now seen corresponding path program 2 times [2021-10-07 14:58:25,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:25,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931550797] [2021-10-07 14:58:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:25,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:26,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:26,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931550797] [2021-10-07 14:58:26,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931550797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:26,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117915248] [2021-10-07 14:58:26,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:26,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:26,040 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) [2021-10-07 14:58:26,043 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 [2021-10-07 14:58:26,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:26,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:58:26,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:58:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117915248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:26,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:26,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:58:26,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068446211] [2021-10-07 14:58:26,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:26,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:26,119 INFO L87 Difference]: Start difference. First operand 1155 states and 3849 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) [2021-10-07 14:58:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:26,152 INFO L93 Difference]: Finished difference Result 1154 states and 3848 transitions. [2021-10-07 14:58:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:26,153 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 [2021-10-07 14:58:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:26,165 INFO L225 Difference]: With dead ends: 1154 [2021-10-07 14:58:26,166 INFO L226 Difference]: Without dead ends: 1154 [2021-10-07 14:58:26,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2021-10-07 14:58:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1152. [2021-10-07 14:58:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 974 states have (on average 3.9466119096509242) internal successors, (3844), 1151 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 3844 transitions. [2021-10-07 14:58:26,219 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 3844 transitions. Word has length 4 [2021-10-07 14:58:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:26,220 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 3844 transitions. [2021-10-07 14:58:26,220 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) [2021-10-07 14:58:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 3844 transitions. [2021-10-07 14:58:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:26,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:26,220 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 14:58:26,258 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 [2021-10-07 14:58:26,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:26,434 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash 927488136, now seen corresponding path program 1 times [2021-10-07 14:58:26,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:26,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92953335] [2021-10-07 14:58:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:26,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:26,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:26,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92953335] [2021-10-07 14:58:26,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92953335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:26,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:26,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:58:26,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598557234] [2021-10-07 14:58:26,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:26,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:26,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:26,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:26,503 INFO L87 Difference]: Start difference. First operand 1152 states and 3844 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:26,688 INFO L93 Difference]: Finished difference Result 1931 states and 6428 transitions. [2021-10-07 14:58:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:26,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:58:26,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:26,710 INFO L225 Difference]: With dead ends: 1931 [2021-10-07 14:58:26,710 INFO L226 Difference]: Without dead ends: 1931 [2021-10-07 14:58:26,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-10-07 14:58:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1676. [2021-10-07 14:58:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1498 states have (on average 4.184913217623498) internal successors, (6269), 1675 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 6269 transitions. [2021-10-07 14:58:26,804 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 6269 transitions. Word has length 5 [2021-10-07 14:58:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:26,804 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 6269 transitions. [2021-10-07 14:58:26,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 6269 transitions. [2021-10-07 14:58:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:58:26,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:26,806 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-07 14:58:26,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 14:58:26,807 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1339300836, now seen corresponding path program 1 times [2021-10-07 14:58:26,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:26,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850001230] [2021-10-07 14:58:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:26,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:26,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:26,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850001230] [2021-10-07 14:58:26,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850001230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:26,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347749644] [2021-10-07 14:58:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:26,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:26,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:26,914 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) [2021-10-07 14:58:26,937 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 [2021-10-07 14:58:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:26,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:58:26,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:27,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347749644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:27,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:27,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-07 14:58:27,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293150029] [2021-10-07 14:58:27,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:58:27,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:58:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:58:27,064 INFO L87 Difference]: Start difference. First operand 1676 states and 6269 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-07 14:58:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:27,390 INFO L93 Difference]: Finished difference Result 4999 states and 16676 transitions. [2021-10-07 14:58:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:58:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 6 [2021-10-07 14:58:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:27,446 INFO L225 Difference]: With dead ends: 4999 [2021-10-07 14:58:27,446 INFO L226 Difference]: Without dead ends: 4999 [2021-10-07 14:58:27,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:58:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2021-10-07 14:58:27,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 1682. [2021-10-07 14:58:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1504 states have (on average 4.175531914893617) internal successors, (6280), 1681 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 6280 transitions. [2021-10-07 14:58:27,643 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 6280 transitions. Word has length 6 [2021-10-07 14:58:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:27,643 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 6280 transitions. [2021-10-07 14:58:27,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-07 14:58:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 6280 transitions. [2021-10-07 14:58:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:58:27,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:27,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:27,682 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 [2021-10-07 14:58:27,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:27,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:27,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2008625572, now seen corresponding path program 1 times [2021-10-07 14:58:27,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:27,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520334492] [2021-10-07 14:58:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:27,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:27,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:27,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520334492] [2021-10-07 14:58:27,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520334492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:27,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:27,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:58:27,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823306334] [2021-10-07 14:58:27,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:27,908 INFO L87 Difference]: Start difference. First operand 1682 states and 6280 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:27,986 INFO L93 Difference]: Finished difference Result 2745 states and 10337 transitions. [2021-10-07 14:58:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:58:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:28,011 INFO L225 Difference]: With dead ends: 2745 [2021-10-07 14:58:28,012 INFO L226 Difference]: Without dead ends: 2745 [2021-10-07 14:58:28,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-10-07 14:58:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1934. [2021-10-07 14:58:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1756 states have (on average 4.498291571753986) internal successors, (7899), 1933 states have internal predecessors, (7899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7899 transitions. [2021-10-07 14:58:28,156 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7899 transitions. Word has length 7 [2021-10-07 14:58:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:28,157 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 7899 transitions. [2021-10-07 14:58:28,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7899 transitions. [2021-10-07 14:58:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:58:28,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:28,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:28,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 14:58:28,159 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2008625647, now seen corresponding path program 1 times [2021-10-07 14:58:28,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:28,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011791453] [2021-10-07 14:58:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:28,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:28,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:28,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011791453] [2021-10-07 14:58:28,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011791453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:28,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:28,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:58:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288650730] [2021-10-07 14:58:28,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:28,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:28,219 INFO L87 Difference]: Start difference. First operand 1934 states and 7899 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:28,394 INFO L93 Difference]: Finished difference Result 2381 states and 9242 transitions. [2021-10-07 14:58:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:28,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:58:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:28,414 INFO L225 Difference]: With dead ends: 2381 [2021-10-07 14:58:28,414 INFO L226 Difference]: Without dead ends: 2381 [2021-10-07 14:58:28,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:58:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-10-07 14:58:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2156. [2021-10-07 14:58:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1978 states have (on average 4.374620829120324) internal successors, (8653), 2155 states have internal predecessors, (8653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 8653 transitions. [2021-10-07 14:58:28,532 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 8653 transitions. Word has length 7 [2021-10-07 14:58:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:28,532 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 8653 transitions. [2021-10-07 14:58:28,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 8653 transitions. [2021-10-07 14:58:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:58:28,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:28,534 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2021-10-07 14:58:28,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-07 14:58:28,534 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash 595564989, now seen corresponding path program 2 times [2021-10-07 14:58:28,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:28,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260560454] [2021-10-07 14:58:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:28,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:28,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:28,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260560454] [2021-10-07 14:58:28,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260560454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:28,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603572839] [2021-10-07 14:58:28,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:28,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:28,654 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) [2021-10-07 14:58:28,663 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 [2021-10-07 14:58:28,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:28,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:28,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:58:28,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 14:58:28,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603572839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:28,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:28,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-07 14:58:28,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096196053] [2021-10-07 14:58:28,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:28,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:28,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:28,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:58:28,768 INFO L87 Difference]: Start difference. First operand 2156 states and 8653 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:28,842 INFO L93 Difference]: Finished difference Result 1756 states and 7197 transitions. [2021-10-07 14:58:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:58:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:28,857 INFO L225 Difference]: With dead ends: 1756 [2021-10-07 14:58:28,858 INFO L226 Difference]: Without dead ends: 1756 [2021-10-07 14:58:28,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2021-10-07 14:58:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1122. [2021-10-07 14:58:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1025 states have (on average 3.9648780487804878) internal successors, (4064), 1121 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4064 transitions. [2021-10-07 14:58:28,931 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4064 transitions. Word has length 8 [2021-10-07 14:58:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:28,932 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4064 transitions. [2021-10-07 14:58:28,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4064 transitions. [2021-10-07 14:58:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:58:28,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:28,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:28,979 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 [2021-10-07 14:58:29,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:29,147 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:29,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1840242100, now seen corresponding path program 1 times [2021-10-07 14:58:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:29,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602199921] [2021-10-07 14:58:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:29,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:29,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:29,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602199921] [2021-10-07 14:58:29,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602199921] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:29,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:29,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:58:29,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428679598] [2021-10-07 14:58:29,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:29,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:29,201 INFO L87 Difference]: Start difference. First operand 1122 states and 4064 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:29,338 INFO L93 Difference]: Finished difference Result 1137 states and 3935 transitions. [2021-10-07 14:58:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:29,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:58:29,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:29,347 INFO L225 Difference]: With dead ends: 1137 [2021-10-07 14:58:29,347 INFO L226 Difference]: Without dead ends: 1137 [2021-10-07 14:58:29,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:58:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-10-07 14:58:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1084. [2021-10-07 14:58:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 987 states have (on average 3.8926038500506586) internal successors, (3842), 1083 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3842 transitions. [2021-10-07 14:58:29,396 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3842 transitions. Word has length 9 [2021-10-07 14:58:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:29,397 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 3842 transitions. [2021-10-07 14:58:29,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3842 transitions. [2021-10-07 14:58:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:58:29,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:29,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:29,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:58:29,402 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1764584576, now seen corresponding path program 1 times [2021-10-07 14:58:29,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:29,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930067564] [2021-10-07 14:58:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:29,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:29,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:29,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930067564] [2021-10-07 14:58:29,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930067564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:29,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084221819] [2021-10-07 14:58:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:29,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:29,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:29,798 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) [2021-10-07 14:58:29,805 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 [2021-10-07 14:58:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:29,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 14:58:29,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:30,088 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-07 14:58:30,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 14:58:30,651 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 15 treesize of output 11 [2021-10-07 14:58:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:31,337 INFO L354 Elim1Store]: treesize reduction 286, result has 18.3 percent of original size [2021-10-07 14:58:31,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 66 treesize of output 112 [2021-10-07 14:58:32,767 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:32,768 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 99 treesize of output 98 [2021-10-07 14:58:34,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:34,771 INFO L354 Elim1Store]: treesize reduction 196, result has 30.2 percent of original size [2021-10-07 14:58:34,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 92 treesize of output 158 [2021-10-07 14:58:35,008 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:35,009 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 [2021-10-07 14:58:35,070 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:35,071 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 [2021-10-07 14:58:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:35,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084221819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:35,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:35,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 14:58:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404617229] [2021-10-07 14:58:35,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:58:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:58:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:58:35,162 INFO L87 Difference]: Start difference. First operand 1084 states and 3842 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:36,615 INFO L93 Difference]: Finished difference Result 1335 states and 4487 transitions. [2021-10-07 14:58:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:58:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:58:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:36,624 INFO L225 Difference]: With dead ends: 1335 [2021-10-07 14:58:36,624 INFO L226 Difference]: Without dead ends: 1335 [2021-10-07 14:58:36,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1244.3ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-10-07 14:58:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1084. [2021-10-07 14:58:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 987 states have (on average 3.891590678824721) internal successors, (3841), 1083 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3841 transitions. [2021-10-07 14:58:36,679 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3841 transitions. Word has length 10 [2021-10-07 14:58:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:36,679 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 3841 transitions. [2021-10-07 14:58:36,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3841 transitions. [2021-10-07 14:58:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:58:36,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:36,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:36,725 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 [2021-10-07 14:58:36,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:36,900 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1764584596, now seen corresponding path program 1 times [2021-10-07 14:58:36,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:36,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198628517] [2021-10-07 14:58:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:36,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:37,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:37,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198628517] [2021-10-07 14:58:37,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198628517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:37,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988428730] [2021-10-07 14:58:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:37,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:37,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:37,297 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) [2021-10-07 14:58:37,311 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 [2021-10-07 14:58:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:37,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 14:58:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:37,572 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-07 14:58:37,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 14:58:38,378 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 [2021-10-07 14:58:38,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:38,619 INFO L354 Elim1Store]: treesize reduction 286, result has 18.3 percent of original size [2021-10-07 14:58:38,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 66 treesize of output 112 [2021-10-07 14:58:40,088 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:40,089 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 101 treesize of output 100 [2021-10-07 14:58:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:42,151 INFO L354 Elim1Store]: treesize reduction 196, result has 30.2 percent of original size [2021-10-07 14:58:42,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 92 treesize of output 158 [2021-10-07 14:58:42,420 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:42,420 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 33 treesize of output 32 [2021-10-07 14:58:42,507 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:42,507 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 [2021-10-07 14:58:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:42,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988428730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:42,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:42,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 14:58:42,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201231060] [2021-10-07 14:58:42,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:58:42,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:58:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:58:42,609 INFO L87 Difference]: Start difference. First operand 1084 states and 3841 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:44,564 INFO L93 Difference]: Finished difference Result 1333 states and 4483 transitions. [2021-10-07 14:58:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:58:44,565 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:58:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:44,573 INFO L225 Difference]: With dead ends: 1333 [2021-10-07 14:58:44,573 INFO L226 Difference]: Without dead ends: 1333 [2021-10-07 14:58:44,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1387.4ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-10-07 14:58:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1084. [2021-10-07 14:58:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 987 states have (on average 3.8905775075987843) internal successors, (3840), 1083 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3840 transitions. [2021-10-07 14:58:44,624 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3840 transitions. Word has length 10 [2021-10-07 14:58:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:44,624 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 3840 transitions. [2021-10-07 14:58:44,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3840 transitions. [2021-10-07 14:58:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:58:44,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:44,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:44,667 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 [2021-10-07 14:58:44,840 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,SelfDestructingSolverStorable11 [2021-10-07 14:58:44,841 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1062036475, now seen corresponding path program 1 times [2021-10-07 14:58:44,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:44,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202787730] [2021-10-07 14:58:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:44,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:44,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:44,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202787730] [2021-10-07 14:58:44,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202787730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:44,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:44,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:58:44,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274686978] [2021-10-07 14:58:44,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:44,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:44,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:44,917 INFO L87 Difference]: Start difference. First operand 1084 states and 3840 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-07 14:58:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:45,036 INFO L93 Difference]: Finished difference Result 1007 states and 3552 transitions. [2021-10-07 14:58:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-10-07 14:58:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:45,043 INFO L225 Difference]: With dead ends: 1007 [2021-10-07 14:58:45,043 INFO L226 Difference]: Without dead ends: 1007 [2021-10-07 14:58:45,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:58:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-10-07 14:58:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 998. [2021-10-07 14:58:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 901 states have (on average 3.9334073251942288) internal successors, (3544), 997 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 3544 transitions. [2021-10-07 14:58:45,083 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 3544 transitions. Word has length 11 [2021-10-07 14:58:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:45,084 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 3544 transitions. [2021-10-07 14:58:45,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-07 14:58:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 3544 transitions. [2021-10-07 14:58:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:58:45,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:45,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:45,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 14:58:45,085 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:45,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1132174670, now seen corresponding path program 1 times [2021-10-07 14:58:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:45,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979699002] [2021-10-07 14:58:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:45,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:45,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:45,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979699002] [2021-10-07 14:58:45,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979699002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:45,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886986101] [2021-10-07 14:58:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:45,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:45,452 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) [2021-10-07 14:58:45,457 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 [2021-10-07 14:58:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 14:58:45,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:45,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:45,755 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-07 14:58:45,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 325 treesize of output 339 [2021-10-07 14:58:47,188 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 15 treesize of output 11 [2021-10-07 14:58:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:47,457 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-07 14:58:47,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 79 treesize of output 125 [2021-10-07 14:58:49,046 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:49,048 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 1 case distinctions, treesize of input 107 treesize of output 106 [2021-10-07 14:58:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:51,186 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-07 14:58:51,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 105 treesize of output 171 [2021-10-07 14:58:51,458 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:51,459 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 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 14:58:51,519 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:51,520 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 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 14:58:51,589 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:51,590 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 23 treesize of output 22 [2021-10-07 14:58:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:51,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886986101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:51,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:51,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 14:58:51,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504839072] [2021-10-07 14:58:51,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 14:58:51,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 14:58:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:58:51,665 INFO L87 Difference]: Start difference. First operand 998 states and 3544 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:52,752 INFO L93 Difference]: Finished difference Result 1120 states and 3808 transitions. [2021-10-07 14:58:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:58:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:58:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:52,759 INFO L225 Difference]: With dead ends: 1120 [2021-10-07 14:58:52,760 INFO L226 Difference]: Without dead ends: 1120 [2021-10-07 14:58:52,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1021.1ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:58:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-07 14:58:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 998. [2021-10-07 14:58:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 901 states have (on average 3.925638179800222) internal successors, (3537), 997 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 3537 transitions. [2021-10-07 14:58:52,796 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 3537 transitions. Word has length 11 [2021-10-07 14:58:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:52,797 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 3537 transitions. [2021-10-07 14:58:52,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 3537 transitions. [2021-10-07 14:58:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:58:52,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:52,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:52,839 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 [2021-10-07 14:58:53,013 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 [2021-10-07 14:58:53,014 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:58:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1132174650, now seen corresponding path program 1 times [2021-10-07 14:58:53,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:53,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734043311] [2021-10-07 14:58:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:53,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:53,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:53,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734043311] [2021-10-07 14:58:53,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734043311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:53,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571136391] [2021-10-07 14:58:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:53,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:53,308 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) [2021-10-07 14:58:53,333 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 [2021-10-07 14:58:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:53,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 14:58:53,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:53,640 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-07 14:58:53,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 181 [2021-10-07 14:58:54,996 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 17 treesize of output 13 [2021-10-07 14:58:55,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:55,276 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-07 14:58:55,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 79 treesize of output 125 [2021-10-07 14:58:56,977 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:56,977 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 1 case distinctions, treesize of input 109 treesize of output 108 [2021-10-07 14:58:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:59,137 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-07 14:58:59,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 105 treesize of output 171 [2021-10-07 14:58:59,399 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:58:59,400 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 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 14:58:59,464 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:59,465 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 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 14:58:59,537 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:59,537 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 25 treesize of output 24 [2021-10-07 14:58:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:59,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571136391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:59,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:59,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 14:58:59,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876550654] [2021-10-07 14:58:59,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 14:58:59,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 14:58:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:58:59,625 INFO L87 Difference]: Start difference. First operand 998 states and 3537 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:00,836 INFO L93 Difference]: Finished difference Result 1113 states and 3788 transitions. [2021-10-07 14:59:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:59:00,837 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:59:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:00,845 INFO L225 Difference]: With dead ends: 1113 [2021-10-07 14:59:00,845 INFO L226 Difference]: Without dead ends: 1113 [2021-10-07 14:59:00,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1055.5ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:59:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-10-07 14:59:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 998. [2021-10-07 14:59:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 901 states have (on average 3.9178690344062153) internal successors, (3530), 997 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 3530 transitions. [2021-10-07 14:59:00,888 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 3530 transitions. Word has length 11 [2021-10-07 14:59:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:00,888 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 3530 transitions. [2021-10-07 14:59:00,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 3530 transitions. [2021-10-07 14:59:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:59:00,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:00,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:00,941 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 [2021-10-07 14:59:01,104 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 [2021-10-07 14:59:01,105 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:01,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1132449224, now seen corresponding path program 1 times [2021-10-07 14:59:01,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:01,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446536573] [2021-10-07 14:59:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:01,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:59:01,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:01,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446536573] [2021-10-07 14:59:01,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446536573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:01,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:01,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:01,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485959390] [2021-10-07 14:59:01,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:01,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:01,162 INFO L87 Difference]: Start difference. First operand 998 states and 3530 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2021-10-07 14:59:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:01,178 INFO L93 Difference]: Finished difference Result 888 states and 3154 transitions. [2021-10-07 14:59:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:01,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2021-10-07 14:59:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:01,184 INFO L225 Difference]: With dead ends: 888 [2021-10-07 14:59:01,185 INFO L226 Difference]: Without dead ends: 888 [2021-10-07 14:59:01,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-07 14:59:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 786. [2021-10-07 14:59:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 713 states have (on average 3.4978962131837306) internal successors, (2494), 785 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2494 transitions. [2021-10-07 14:59:01,219 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2494 transitions. Word has length 11 [2021-10-07 14:59:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:01,219 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2494 transitions. [2021-10-07 14:59:01,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2021-10-07 14:59:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2494 transitions. [2021-10-07 14:59:01,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:59:01,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:01,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:01,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-07 14:59:01,221 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:01,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1132449299, now seen corresponding path program 1 times [2021-10-07 14:59:01,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:01,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226104534] [2021-10-07 14:59:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:01,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:59:01,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:01,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226104534] [2021-10-07 14:59:01,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226104534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140066] [2021-10-07 14:59:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:01,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:01,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:01,310 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) [2021-10-07 14:59:01,337 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 [2021-10-07 14:59:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:01,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:59:01,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:59:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 14:59:01,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869633166] [2021-10-07 14:59:01,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:59:01,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:01,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:59:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:01,642 INFO L87 Difference]: Start difference. First operand 786 states and 2494 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:02,085 INFO L93 Difference]: Finished difference Result 1781 states and 5629 transitions. [2021-10-07 14:59:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:59:02,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:59:02,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:02,092 INFO L225 Difference]: With dead ends: 1781 [2021-10-07 14:59:02,092 INFO L226 Difference]: Without dead ends: 1781 [2021-10-07 14:59:02,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-10-07 14:59:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1116. [2021-10-07 14:59:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1043 states have (on average 3.7737296260786195) internal successors, (3936), 1115 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3936 transitions. [2021-10-07 14:59:02,143 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3936 transitions. Word has length 11 [2021-10-07 14:59:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:02,143 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 3936 transitions. [2021-10-07 14:59:02,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3936 transitions. [2021-10-07 14:59:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:59:02,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:02,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:02,184 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 [2021-10-07 14:59:02,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:02,360 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash -737615621, now seen corresponding path program 1 times [2021-10-07 14:59:02,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:02,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682983821] [2021-10-07 14:59:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:02,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:02,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:02,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682983821] [2021-10-07 14:59:02,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682983821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:02,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332551247] [2021-10-07 14:59:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:02,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:02,619 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) [2021-10-07 14:59:02,629 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 [2021-10-07 14:59:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:02,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 14:59:02,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:02,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-07 14:59:02,919 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 [2021-10-07 14:59:02,971 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 14:59:02,972 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 11 treesize of output 11 [2021-10-07 14:59:03,036 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:03,037 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 29 treesize of output 28 [2021-10-07 14:59:03,093 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:03,094 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 [2021-10-07 14:59:03,153 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:03,153 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 [2021-10-07 14:59:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:03,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332551247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:03,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:03,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 14:59:03,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388680550] [2021-10-07 14:59:03,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:59:03,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:59:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:03,231 INFO L87 Difference]: Start difference. First operand 1116 states and 3936 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:03,746 INFO L93 Difference]: Finished difference Result 1797 states and 6537 transitions. [2021-10-07 14:59:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:59:03,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:59:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:03,757 INFO L225 Difference]: With dead ends: 1797 [2021-10-07 14:59:03,757 INFO L226 Difference]: Without dead ends: 1797 [2021-10-07 14:59:03,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 416.0ms TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:59:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-10-07 14:59:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1125. [2021-10-07 14:59:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1052 states have (on average 3.786121673003802) internal successors, (3983), 1124 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 3983 transitions. [2021-10-07 14:59:03,818 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 3983 transitions. Word has length 12 [2021-10-07 14:59:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:03,819 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 3983 transitions. [2021-10-07 14:59:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 3983 transitions. [2021-10-07 14:59:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:59:03,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:03,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:03,862 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 [2021-10-07 14:59:04,033 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,SelfDestructingSolverStorable17 [2021-10-07 14:59:04,033 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:04,034 INFO L82 PathProgramCache]: Analyzing trace with hash -737615620, now seen corresponding path program 1 times [2021-10-07 14:59:04,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:04,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040760902] [2021-10-07 14:59:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:04,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:04,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:04,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040760902] [2021-10-07 14:59:04,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040760902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:04,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866726438] [2021-10-07 14:59:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:04,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:04,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:04,299 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) [2021-10-07 14:59:04,321 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 [2021-10-07 14:59:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:04,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 14:59:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:04,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-07 14:59:04,635 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 15 treesize of output 11 [2021-10-07 14:59:04,698 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 14:59:04,699 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 11 treesize of output 11 [2021-10-07 14:59:04,751 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:04,751 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 27 treesize of output 26 [2021-10-07 14:59:04,807 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:04,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-10-07 14:59:04,859 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:04,860 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 [2021-10-07 14:59:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:04,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866726438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:04,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:04,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 14:59:04,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798540221] [2021-10-07 14:59:04,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:59:04,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:59:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:04,923 INFO L87 Difference]: Start difference. First operand 1125 states and 3983 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:05,440 INFO L93 Difference]: Finished difference Result 1788 states and 6508 transitions. [2021-10-07 14:59:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:59:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:59:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:05,447 INFO L225 Difference]: With dead ends: 1788 [2021-10-07 14:59:05,447 INFO L226 Difference]: Without dead ends: 1788 [2021-10-07 14:59:05,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 388.4ms TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:59:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-10-07 14:59:05,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1125. [2021-10-07 14:59:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1052 states have (on average 3.777566539923954) internal successors, (3974), 1124 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 3974 transitions. [2021-10-07 14:59:05,496 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 3974 transitions. Word has length 12 [2021-10-07 14:59:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:05,496 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 3974 transitions. [2021-10-07 14:59:05,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 3974 transitions. [2021-10-07 14:59:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:05,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:05,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:05,542 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 [2021-10-07 14:59:05,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:05,713 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1393282483, now seen corresponding path program 1 times [2021-10-07 14:59:05,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:05,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038056869] [2021-10-07 14:59:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:05,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:06,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:06,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038056869] [2021-10-07 14:59:06,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038056869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:06,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099099753] [2021-10-07 14:59:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:06,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:06,051 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) [2021-10-07 14:59:06,053 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 [2021-10-07 14:59:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:06,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 14:59:06,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:06,446 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 14:59:06,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 499 treesize of output 513 [2021-10-07 14:59:07,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 14:59:07,591 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-07 14:59:07,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-07 14:59:08,810 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:08,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 96 [2021-10-07 14:59:10,336 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-07 14:59:10,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-07 14:59:10,579 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:10,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-07 14:59:10,649 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:10,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-07 14:59:10,730 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:10,730 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-07 14:59:10,854 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:10,854 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 23 treesize of output 22 [2021-10-07 14:59:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:10,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099099753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:10,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:10,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 14:59:10,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451587363] [2021-10-07 14:59:10,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 14:59:10,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 14:59:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:59:10,899 INFO L87 Difference]: Start difference. First operand 1125 states and 3974 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:12,062 INFO L93 Difference]: Finished difference Result 1673 states and 5529 transitions. [2021-10-07 14:59:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-07 14:59:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:12,069 INFO L225 Difference]: With dead ends: 1673 [2021-10-07 14:59:12,070 INFO L226 Difference]: Without dead ends: 1673 [2021-10-07 14:59:12,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1094.3ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:59:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-10-07 14:59:12,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1227. [2021-10-07 14:59:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1154 states have (on average 3.8388214904679376) internal successors, (4430), 1226 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 4430 transitions. [2021-10-07 14:59:12,120 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 4430 transitions. Word has length 13 [2021-10-07 14:59:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:12,120 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 4430 transitions. [2021-10-07 14:59:12,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 4430 transitions. [2021-10-07 14:59:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:12,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:12,121 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:12,159 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 [2021-10-07 14:59:12,335 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 [2021-10-07 14:59:12,336 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1393282463, now seen corresponding path program 1 times [2021-10-07 14:59:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:12,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486438769] [2021-10-07 14:59:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:12,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:12,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:12,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486438769] [2021-10-07 14:59:12,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486438769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:12,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092125151] [2021-10-07 14:59:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:12,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:12,710 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) [2021-10-07 14:59:12,712 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 [2021-10-07 14:59:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:12,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 14:59:12,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:13,101 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 14:59:13,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 348 treesize of output 370 [2021-10-07 14:59:13,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-10-07 14:59:14,283 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-07 14:59:14,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-07 14:59:15,346 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:15,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 98 [2021-10-07 14:59:17,197 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-07 14:59:17,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-07 14:59:17,428 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:17,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-10-07 14:59:17,503 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:17,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 14:59:17,585 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:17,585 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 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 14:59:17,714 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:17,715 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 25 treesize of output 24 [2021-10-07 14:59:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092125151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:17,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:17,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 14:59:17,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033554486] [2021-10-07 14:59:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 14:59:17,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 14:59:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:59:17,760 INFO L87 Difference]: Start difference. First operand 1227 states and 4430 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:19,129 INFO L93 Difference]: Finished difference Result 1571 states and 5073 transitions. [2021-10-07 14:59:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:19,129 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-07 14:59:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:19,135 INFO L225 Difference]: With dead ends: 1571 [2021-10-07 14:59:19,136 INFO L226 Difference]: Without dead ends: 1571 [2021-10-07 14:59:19,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1128.1ms TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:59:19,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-10-07 14:59:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1227. [2021-10-07 14:59:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1154 states have (on average 3.662045060658579) internal successors, (4226), 1226 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 4226 transitions. [2021-10-07 14:59:19,206 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 4226 transitions. Word has length 13 [2021-10-07 14:59:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:19,207 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 4226 transitions. [2021-10-07 14:59:19,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 4226 transitions. [2021-10-07 14:59:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:19,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:19,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:19,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-07 14:59:19,421 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 [2021-10-07 14:59:19,422 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1390985707, now seen corresponding path program 1 times [2021-10-07 14:59:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:19,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121748272] [2021-10-07 14:59:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:19,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:19,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:19,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121748272] [2021-10-07 14:59:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121748272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:19,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922254294] [2021-10-07 14:59:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:19,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:19,671 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) [2021-10-07 14:59:19,674 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 [2021-10-07 14:59:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 14:59:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:20,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-07 14:59:20,099 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 [2021-10-07 14:59:20,165 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 14:59:20,166 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 11 treesize of output 11 [2021-10-07 14:59:20,230 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:20,231 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 29 treesize of output 28 [2021-10-07 14:59:20,290 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:20,291 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 [2021-10-07 14:59:20,369 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:20,369 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 [2021-10-07 14:59:20,427 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:20,427 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 [2021-10-07 14:59:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922254294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:20,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:20,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 14:59:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732014316] [2021-10-07 14:59:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:59:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:59:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:20,489 INFO L87 Difference]: Start difference. First operand 1227 states and 4226 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:21,174 INFO L93 Difference]: Finished difference Result 1879 states and 6374 transitions. [2021-10-07 14:59:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:21,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2021-10-07 14:59:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:21,181 INFO L225 Difference]: With dead ends: 1879 [2021-10-07 14:59:21,181 INFO L226 Difference]: Without dead ends: 1879 [2021-10-07 14:59:21,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 530.1ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:59:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-10-07 14:59:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1396. [2021-10-07 14:59:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1323 states have (on average 3.9130763416477703) internal successors, (5177), 1395 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5177 transitions. [2021-10-07 14:59:21,220 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5177 transitions. Word has length 13 [2021-10-07 14:59:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:21,221 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5177 transitions. [2021-10-07 14:59:21,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5177 transitions. [2021-10-07 14:59:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:21,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:21,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:21,265 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 [2021-10-07 14:59:21,435 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 [2021-10-07 14:59:21,436 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:21,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1390985706, now seen corresponding path program 1 times [2021-10-07 14:59:21,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:21,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107712552] [2021-10-07 14:59:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:21,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:21,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:21,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107712552] [2021-10-07 14:59:21,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107712552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:21,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908568013] [2021-10-07 14:59:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:21,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:21,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:21,740 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) [2021-10-07 14:59:21,766 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 [2021-10-07 14:59:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:22,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 14:59:22,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:22,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-07 14:59:22,175 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 15 treesize of output 11 [2021-10-07 14:59:22,238 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 14:59:22,239 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 11 treesize of output 11 [2021-10-07 14:59:22,307 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 14:59:22,308 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 27 treesize of output 26 [2021-10-07 14:59:22,368 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:22,368 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 [2021-10-07 14:59:22,440 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:22,441 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 [2021-10-07 14:59:22,505 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:59:22,506 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 [2021-10-07 14:59:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:22,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908568013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:22,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:22,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 14:59:22,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639750150] [2021-10-07 14:59:22,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:59:22,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:59:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:22,568 INFO L87 Difference]: Start difference. First operand 1396 states and 5177 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:23,174 INFO L93 Difference]: Finished difference Result 1710 states and 5761 transitions. [2021-10-07 14:59:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2021-10-07 14:59:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:23,181 INFO L225 Difference]: With dead ends: 1710 [2021-10-07 14:59:23,181 INFO L226 Difference]: Without dead ends: 1710 [2021-10-07 14:59:23,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 511.4ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:59:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2021-10-07 14:59:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1396. [2021-10-07 14:59:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1323 states have (on average 3.7853363567649283) internal successors, (5008), 1395 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5008 transitions. [2021-10-07 14:59:23,221 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5008 transitions. Word has length 13 [2021-10-07 14:59:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:23,221 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5008 transitions. [2021-10-07 14:59:23,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5008 transitions. [2021-10-07 14:59:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:23,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:23,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:23,267 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 [2021-10-07 14:59:23,436 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 [2021-10-07 14:59:23,437 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1391244402, now seen corresponding path program 1 times [2021-10-07 14:59:23,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:23,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057718567] [2021-10-07 14:59:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:23,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:59:23,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:23,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057718567] [2021-10-07 14:59:23,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057718567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:23,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206250848] [2021-10-07 14:59:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:23,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:23,531 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) [2021-10-07 14:59:23,540 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 [2021-10-07 14:59:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:23,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:59:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:59:23,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206250848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:23,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:23,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 14:59:23,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380939533] [2021-10-07 14:59:23,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:59:23,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:59:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:23,879 INFO L87 Difference]: Start difference. First operand 1396 states and 5008 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 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) [2021-10-07 14:59:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,263 INFO L93 Difference]: Finished difference Result 1509 states and 5001 transitions. [2021-10-07 14:59:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:59:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 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 13 [2021-10-07 14:59:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,267 INFO L225 Difference]: With dead ends: 1509 [2021-10-07 14:59:24,267 INFO L226 Difference]: Without dead ends: 1509 [2021-10-07 14:59:24,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-10-07 14:59:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1332. [2021-10-07 14:59:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1259 states have (on average 3.687053216838761) internal successors, (4642), 1331 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 4642 transitions. [2021-10-07 14:59:24,318 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 4642 transitions. Word has length 13 [2021-10-07 14:59:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,318 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 4642 transitions. [2021-10-07 14:59:24,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 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) [2021-10-07 14:59:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 4642 transitions. [2021-10-07 14:59:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:24,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:24,346 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 [2021-10-07 14:59:24,524 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 [2021-10-07 14:59:24,525 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash -170839318, now seen corresponding path program 1 times [2021-10-07 14:59:24,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774587739] [2021-10-07 14:59:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:59:24,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:24,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774587739] [2021-10-07 14:59:24,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774587739] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:24,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:24,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:59:24,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806822494] [2021-10-07 14:59:24,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:24,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,567 INFO L87 Difference]: Start difference. First operand 1332 states and 4642 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,591 INFO L93 Difference]: Finished difference Result 1879 states and 6905 transitions. [2021-10-07 14:59:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:59:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,600 INFO L225 Difference]: With dead ends: 1879 [2021-10-07 14:59:24,601 INFO L226 Difference]: Without dead ends: 1879 [2021-10-07 14:59:24,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-10-07 14:59:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1468. [2021-10-07 14:59:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1395 states have (on average 4.171326164874552) internal successors, (5819), 1467 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5819 transitions. [2021-10-07 14:59:24,649 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5819 transitions. Word has length 14 [2021-10-07 14:59:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,649 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5819 transitions. [2021-10-07 14:59:24,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5819 transitions. [2021-10-07 14:59:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:24,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:24,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-07 14:59:24,651 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:24,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,652 INFO L82 PathProgramCache]: Analyzing trace with hash -170839316, now seen corresponding path program 1 times [2021-10-07 14:59:24,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330121649] [2021-10-07 14:59:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:59:24,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:24,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330121649] [2021-10-07 14:59:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330121649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:24,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:59:24,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937239920] [2021-10-07 14:59:24,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:24,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,690 INFO L87 Difference]: Start difference. First operand 1468 states and 5819 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,713 INFO L93 Difference]: Finished difference Result 1879 states and 6769 transitions. [2021-10-07 14:59:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:24,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:59:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,722 INFO L225 Difference]: With dead ends: 1879 [2021-10-07 14:59:24,723 INFO L226 Difference]: Without dead ends: 1879 [2021-10-07 14:59:24,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-10-07 14:59:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1468. [2021-10-07 14:59:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1395 states have (on average 4.073835125448029) internal successors, (5683), 1467 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5683 transitions. [2021-10-07 14:59:24,781 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5683 transitions. Word has length 14 [2021-10-07 14:59:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,781 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5683 transitions. [2021-10-07 14:59:24,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5683 transitions. [2021-10-07 14:59:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:24,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:24,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-07 14:59:24,783 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash -170839315, now seen corresponding path program 1 times [2021-10-07 14:59:24,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533495240] [2021-10-07 14:59:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:59:24,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:24,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533495240] [2021-10-07 14:59:24,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533495240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:24,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:24,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:24,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200172217] [2021-10-07 14:59:24,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:24,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,819 INFO L87 Difference]: Start difference. First operand 1468 states and 5683 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,851 INFO L93 Difference]: Finished difference Result 1879 states and 6633 transitions. [2021-10-07 14:59:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:24,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:59:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,860 INFO L225 Difference]: With dead ends: 1879 [2021-10-07 14:59:24,861 INFO L226 Difference]: Without dead ends: 1879 [2021-10-07 14:59:24,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-10-07 14:59:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1468. [2021-10-07 14:59:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1395 states have (on average 3.9763440860215056) internal successors, (5547), 1467 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5547 transitions. [2021-10-07 14:59:24,915 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5547 transitions. Word has length 14 [2021-10-07 14:59:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,916 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5547 transitions. [2021-10-07 14:59:24,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5547 transitions. [2021-10-07 14:59:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:24,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:24,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-07 14:59:24,917 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 14:59:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash -170839409, now seen corresponding path program 1 times [2021-10-07 14:59:24,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873670582] [2021-10-07 14:59:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:59:24,948 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 14:59:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:59:25,005 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-07 14:59:25,005 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 14:59:25,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:59:25,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-07 14:59:25,025 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:59:25,025 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:59:25,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:59:25 BasicIcfg [2021-10-07 14:59:25,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:59:25,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:59:25,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:59:25,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:59:25,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:13" (3/4) ... [2021-10-07 14:59:25,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-07 14:59:25,186 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-bad-three-array-sum-alt.wvr.c-witness.graphml [2021-10-07 14:59:25,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:59:25,187 INFO L168 Benchmark]: Toolchain (without parser) took 73255.00 ms. Allocated memory was 166.7 MB in the beginning and 357.6 MB in the end (delta: 190.8 MB). Free memory was 141.4 MB in the beginning and 129.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 204.3 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,187 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 166.7 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:59:25,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.04 ms. Allocated memory is still 166.7 MB. Free memory was 141.0 MB in the beginning and 130.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.90 ms. Allocated memory is still 166.7 MB. Free memory was 130.2 MB in the beginning and 128.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,188 INFO L168 Benchmark]: Boogie Preprocessor took 42.59 ms. Allocated memory is still 166.7 MB. Free memory was 128.2 MB in the beginning and 126.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,189 INFO L168 Benchmark]: RCFGBuilder took 958.47 ms. Allocated memory is still 166.7 MB. Free memory was 126.5 MB in the beginning and 139.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,189 INFO L168 Benchmark]: TraceAbstraction took 71738.12 ms. Allocated memory was 166.7 MB in the beginning and 357.6 MB in the end (delta: 190.8 MB). Free memory was 138.8 MB in the beginning and 134.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 196.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,189 INFO L168 Benchmark]: Witness Printer took 92.61 ms. Allocated memory is still 357.6 MB. Free memory was 134.2 MB in the beginning and 129.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-10-07 14:59:25,191 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 166.7 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.04 ms. Allocated memory is still 166.7 MB. Free memory was 141.0 MB in the beginning and 130.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.90 ms. Allocated memory is still 166.7 MB. Free memory was 130.2 MB in the beginning and 128.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.59 ms. Allocated memory is still 166.7 MB. Free memory was 128.2 MB in the beginning and 126.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 958.47 ms. Allocated memory is still 166.7 MB. Free memory was 126.5 MB in the beginning and 139.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 71738.12 ms. Allocated memory was 166.7 MB in the beginning and 357.6 MB in the end (delta: 190.8 MB). Free memory was 138.8 MB in the beginning and 134.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 196.5 MB. Max. memory is 8.0 GB. * Witness Printer took 92.61 ms. Allocated memory is still 357.6 MB. Free memory was 134.2 MB in the beginning and 129.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10401.4ms, 243 PlacesBefore, 57 PlacesAfterwards, 252 TransitionsBefore, 53 TransitionsAfterwards, 4722 CoEnabledTransitionPairs, 7 FixpointIterations, 150 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 6 ConcurrentYvCompositions, 13 ChoiceCompositions, 280 TotalNumberOfCompositions, 6228 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5208, positive: 5137, positive conditional: 0, positive unconditional: 5137, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3148, positive: 3111, positive conditional: 0, positive unconditional: 3111, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3148, positive: 3111, positive conditional: 0, positive unconditional: 3111, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 117, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5208, positive: 2026, positive conditional: 0, positive unconditional: 2026, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 3148, unknown conditional: 0, unknown unconditional: 3148] , Statistics on independence cache: Total cache size (in pairs): 143, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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 - CounterExampleResult [Line: 66]: integer overflow possible integer overflow possible We found a FailurePath: [L41] 0 int* A; [L42] 0 int* B; [L43] 0 int* C; [L44] 0 int asum, bsum, csum, N; [L74] 0 pthread_t t1, t2, t3; [L76] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L99] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L100] 0 int i = 0; VAL [A={0:0}, asum=0, B={0:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND TRUE 0 i < size [L101] 0 arr[i] = __VERIFIER_nondet_int() [L100] 0 i++ VAL [A={0:0}, asum=0, B={0:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND FALSE 0 !(i < size) [L103] 0 return arr; [L77] 0 A = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L99] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L100] 0 int i = 0; VAL [A={-3:0}, asum=0, B={0:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND TRUE 0 i < size [L101] 0 arr[i] = __VERIFIER_nondet_int() [L100] 0 i++ VAL [A={-3:0}, asum=0, B={0:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND FALSE 0 !(i < size) [L103] 0 return arr; [L78] 0 B = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L99] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L100] 0 int i = 0; VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND TRUE 0 i < size [L101] 0 arr[i] = __VERIFIER_nondet_int() [L100] 0 i++ VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={0:0}, csum=0, N=1] [L100] COND FALSE 0 !(i < size) [L103] 0 return arr; [L79] 0 C = create_fresh_int_array(N) [L82] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={-6:0}, csum=0, N=1] [L83] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={-6:0}, csum=0, N=1] [L84] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={-6:0}, csum=0, N=1] [L65] 3 int i=0; VAL [A={-3:0}, asum=0, B={3:0}, bsum=0, C={-6:0}, csum=0, i=0, N=1] [L65] COND TRUE 3 i