/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-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:13:47,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:13:47,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:13:47,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 16:13:47,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 16:13:47,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 16:13:47,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 16:13:47,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 16:13:47,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 16:13:47,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 16:13:47,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 16:13:47,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 16:13:47,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:13:47,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:13:47,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:13:47,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:13:47,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:13:47,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:13:47,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:13:47,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:13:47,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:13:47,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:13:47,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:13:47,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:13:47,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 16:13:47,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 16:13:47,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 16:13:47,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 16:13:47,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 16:13:47,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 16:13:47,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:13:47,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:13:47,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:13:47,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:13:47,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:13:47,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:13:47,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:13:47,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:13:47,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:13:47,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:13:47,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:13:47,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:13:47,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:13:47,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:13:47,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:13:47,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:13:47,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:13:47,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:13:47,287 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:13:47,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:13:47,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:13:47,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:13:47,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:13:47,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:13:47,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:13:47,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:13:47,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:13:47,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:13:47,291 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:13:47,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:13:47,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:13:47,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:13:47,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:13:47,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:13:47,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:13:47,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:13:47,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:47,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:13:47,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:13:47,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:13:47,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:13:47,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:13:47,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:13:47,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:13:47,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:13:47,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:13:47,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:13:47,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:13:47,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:13:47,777 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:13:47,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2021-10-08 16:13:47,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d560e691/93362dba3f9c4e8c86e5658acc3700b3/FLAG90171124b [2021-10-08 16:13:48,516 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:13:48,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2021-10-08 16:13:48,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d560e691/93362dba3f9c4e8c86e5658acc3700b3/FLAG90171124b [2021-10-08 16:13:48,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d560e691/93362dba3f9c4e8c86e5658acc3700b3 [2021-10-08 16:13:48,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:13:48,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:13:48,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:48,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:13:48,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:13:48,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:48" (1/1) ... [2021-10-08 16:13:48,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b106efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:48, skipping insertion in model container [2021-10-08 16:13:48,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:48" (1/1) ... [2021-10-08 16:13:48,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:13:48,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:13:49,201 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-prod-cons3.wvr.c[3425,3438] [2021-10-08 16:13:49,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:49,230 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:13:49,300 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-prod-cons3.wvr.c[3425,3438] [2021-10-08 16:13:49,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:49,326 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:13:49,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49 WrapperNode [2021-10-08 16:13:49,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:49,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:49,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:13:49,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:13:49,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:49,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:13:49,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:13:49,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:13:49,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:13:49,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:13:49,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:13:49,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:13:49,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (1/1) ... [2021-10-08 16:13:49,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:49,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:49,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:13:49,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:13:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:13:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:13:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:13:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:13:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:13:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:13:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:13:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:13:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:13:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 16:13:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 16:13:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:13:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:13:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:13:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:13:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:13:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:13:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:13:49,562 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:13:50,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:13:50,694 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2021-10-08 16:13:50,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:50 BoogieIcfgContainer [2021-10-08 16:13:50,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:13:50,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:13:50,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:13:50,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:13:50,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:13:48" (1/3) ... [2021-10-08 16:13:50,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f0561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:50, skipping insertion in model container [2021-10-08 16:13:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:49" (2/3) ... [2021-10-08 16:13:50,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f0561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:50, skipping insertion in model container [2021-10-08 16:13:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:50" (3/3) ... [2021-10-08 16:13:50,707 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2021-10-08 16:13:50,713 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:13:50,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:13:50,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-08 16:13:50,714 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:13:50,756 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,756 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,756 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,759 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,760 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,761 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,762 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,762 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,763 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,766 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,766 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,768 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,768 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,769 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,769 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,772 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,774 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,774 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,779 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,780 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,786 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,786 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,787 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,788 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,789 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,789 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,792 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,793 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,793 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,793 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,793 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,799 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,800 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,800 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,800 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,800 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,800 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,801 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,801 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,802 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,803 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,804 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,805 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,807 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,809 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:50,818 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 16:13:50,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:13:50,905 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:13:50,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-10-08 16:13:50,927 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:13:50,939 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 245 transitions, 522 flow [2021-10-08 16:13:50,942 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 245 transitions, 522 flow [2021-10-08 16:13:50,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 245 transitions, 522 flow [2021-10-08 16:13:51,096 INFO L129 PetriNetUnfolder]: 18/241 cut-off events. [2021-10-08 16:13:51,097 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 16:13:51,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 241 events. 18/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 207. Up to 3 conditions per place. [2021-10-08 16:13:51,114 INFO L116 LiptonReduction]: Number of co-enabled transitions 4462 [2021-10-08 16:14:03,818 INFO L131 LiptonReduction]: Checked pairs total: 15560 [2021-10-08 16:14:03,819 INFO L133 LiptonReduction]: Total number of compositions: 246 [2021-10-08 16:14:03,833 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 62 transitions, 156 flow [2021-10-08 16:14:04,326 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10600 states, 9922 states have (on average 4.4016327353356175) internal successors, (43673), 10599 states have internal predecessors, (43673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 10600 states, 9922 states have (on average 4.4016327353356175) internal successors, (43673), 10599 states have internal predecessors, (43673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:14:04,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:04,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:14:04,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:04,390 INFO L82 PathProgramCache]: Analyzing trace with hash 34216, now seen corresponding path program 1 times [2021-10-08 16:14:04,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:04,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443560482] [2021-10-08 16:14:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:04,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:04,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:04,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443560482] [2021-10-08 16:14:04,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443560482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:04,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:04,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947774959] [2021-10-08 16:14:04,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:04,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:04,918 INFO L87 Difference]: Start difference. First operand has 10600 states, 9922 states have (on average 4.4016327353356175) internal successors, (43673), 10599 states have internal predecessors, (43673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:05,439 INFO L93 Difference]: Finished difference Result 14203 states and 58345 transitions. [2021-10-08 16:14:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:14:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:05,791 INFO L225 Difference]: With dead ends: 14203 [2021-10-08 16:14:05,791 INFO L226 Difference]: Without dead ends: 14203 [2021-10-08 16:14:05,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14203 states. [2021-10-08 16:14:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14203 to 7106. [2021-10-08 16:14:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7106 states, 6767 states have (on average 4.311955076104625) internal successors, (29179), 7105 states have internal predecessors, (29179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 29179 transitions. [2021-10-08 16:14:06,689 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 29179 transitions. Word has length 2 [2021-10-08 16:14:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:06,690 INFO L470 AbstractCegarLoop]: Abstraction has 7106 states and 29179 transitions. [2021-10-08 16:14:06,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 29179 transitions. [2021-10-08 16:14:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:14:06,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:06,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:14:06,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:14:06,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1062517, now seen corresponding path program 1 times [2021-10-08 16:14:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:06,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044766346] [2021-10-08 16:14:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:06,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:06,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:06,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044766346] [2021-10-08 16:14:06,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044766346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:06,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259974230] [2021-10-08 16:14:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:06,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:06,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:06,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:06,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:14:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:06,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:06,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:07,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259974230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:07,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:07,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:14:07,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011712657] [2021-10-08 16:14:07,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:14:07,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:14:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:07,072 INFO L87 Difference]: Start difference. First operand 7106 states and 29179 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) [2021-10-08 16:14:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:07,569 INFO L93 Difference]: Finished difference Result 21302 states and 87517 transitions. [2021-10-08 16:14:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:14:07,570 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 [2021-10-08 16:14:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:07,925 INFO L225 Difference]: With dead ends: 21302 [2021-10-08 16:14:07,925 INFO L226 Difference]: Without dead ends: 21302 [2021-10-08 16:14:07,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21302 states. [2021-10-08 16:14:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21302 to 7108. [2021-10-08 16:14:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6769 states have (on average 4.311567439799084) internal successors, (29185), 7107 states have internal predecessors, (29185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 29185 transitions. [2021-10-08 16:14:09,165 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 29185 transitions. Word has length 3 [2021-10-08 16:14:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:09,166 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 29185 transitions. [2021-10-08 16:14:09,166 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) [2021-10-08 16:14:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 29185 transitions. [2021-10-08 16:14:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:14:09,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:09,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:14:09,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 16:14:09,381 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 [2021-10-08 16:14:09,383 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:09,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1062518, now seen corresponding path program 1 times [2021-10-08 16:14:09,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:09,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832432853] [2021-10-08 16:14:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:09,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:09,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:09,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832432853] [2021-10-08 16:14:09,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832432853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:09,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:09,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:09,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592276542] [2021-10-08 16:14:09,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:09,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:09,476 INFO L87 Difference]: Start difference. First operand 7108 states and 29185 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) [2021-10-08 16:14:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:09,778 INFO L93 Difference]: Finished difference Result 7106 states and 29181 transitions. [2021-10-08 16:14:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:09,779 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 [2021-10-08 16:14:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:09,836 INFO L225 Difference]: With dead ends: 7106 [2021-10-08 16:14:09,837 INFO L226 Difference]: Without dead ends: 7106 [2021-10-08 16:14:09,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2021-10-08 16:14:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 7106. [2021-10-08 16:14:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7106 states, 6769 states have (on average 4.31097651056286) internal successors, (29181), 7105 states have internal predecessors, (29181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 29181 transitions. [2021-10-08 16:14:10,332 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 29181 transitions. Word has length 3 [2021-10-08 16:14:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 7106 states and 29181 transitions. [2021-10-08 16:14:10,332 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) [2021-10-08 16:14:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 29181 transitions. [2021-10-08 16:14:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:14:10,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:10,333 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:14:10,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:14:10,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 32939848, now seen corresponding path program 2 times [2021-10-08 16:14:10,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:10,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000192825] [2021-10-08 16:14:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:10,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:10,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:10,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000192825] [2021-10-08 16:14:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000192825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:10,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889232494] [2021-10-08 16:14:10,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:10,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:10,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:10,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:14:10,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:10,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:10,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:14:10,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:14:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889232494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:10,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:10,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556360436] [2021-10-08 16:14:10,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:10,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:10,571 INFO L87 Difference]: Start difference. First operand 7106 states and 29181 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:10,825 INFO L93 Difference]: Finished difference Result 7105 states and 29180 transitions. [2021-10-08 16:14:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:14:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:10,890 INFO L225 Difference]: With dead ends: 7105 [2021-10-08 16:14:10,891 INFO L226 Difference]: Without dead ends: 7105 [2021-10-08 16:14:10,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2021-10-08 16:14:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 7103. [2021-10-08 16:14:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 6767 states have (on average 4.311511748189744) internal successors, (29176), 7102 states have internal predecessors, (29176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 29176 transitions. [2021-10-08 16:14:11,335 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 29176 transitions. Word has length 4 [2021-10-08 16:14:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:11,337 INFO L470 AbstractCegarLoop]: Abstraction has 7103 states and 29176 transitions. [2021-10-08 16:14:11,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 29176 transitions. [2021-10-08 16:14:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:14:11,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:11,338 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:14:11,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:11,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:11,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:11,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1022009972, now seen corresponding path program 1 times [2021-10-08 16:14:11,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:11,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372196459] [2021-10-08 16:14:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:11,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:11,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:11,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372196459] [2021-10-08 16:14:11,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372196459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:11,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810617642] [2021-10-08 16:14:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:11,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:11,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:11,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:11,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:14:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:11,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:14:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:11,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810617642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:11,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:11,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 16:14:11,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315569417] [2021-10-08 16:14:11,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:14:11,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:14:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:11,758 INFO L87 Difference]: Start difference. First operand 7103 states and 29176 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-10-08 16:14:12,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:12,420 INFO L93 Difference]: Finished difference Result 28398 states and 116682 transitions. [2021-10-08 16:14:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:14:12,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 5 [2021-10-08 16:14:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:12,824 INFO L225 Difference]: With dead ends: 28398 [2021-10-08 16:14:12,825 INFO L226 Difference]: Without dead ends: 28398 [2021-10-08 16:14:12,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28398 states. [2021-10-08 16:14:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28398 to 7104. [2021-10-08 16:14:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 6768 states have (on average 4.3111702127659575) internal successors, (29178), 7103 states have internal predecessors, (29178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 29178 transitions. [2021-10-08 16:14:13,645 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 29178 transitions. Word has length 5 [2021-10-08 16:14:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:13,646 INFO L470 AbstractCegarLoop]: Abstraction has 7104 states and 29178 transitions. [2021-10-08 16:14:13,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-10-08 16:14:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 29178 transitions. [2021-10-08 16:14:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:14:13,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:13,647 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-08 16:14:13,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:13,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:13,862 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1617540280, now seen corresponding path program 2 times [2021-10-08 16:14:13,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:13,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529296867] [2021-10-08 16:14:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:13,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:13,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:13,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529296867] [2021-10-08 16:14:13,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529296867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:13,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723319510] [2021-10-08 16:14:13,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:13,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:13,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:13,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:13,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:14:13,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:13,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:13,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:14:13,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:14:14,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723319510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:14,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:14,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-08 16:14:14,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59357114] [2021-10-08 16:14:14,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:14,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:14:14,036 INFO L87 Difference]: Start difference. First operand 7104 states and 29178 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:14,230 INFO L93 Difference]: Finished difference Result 5677 states and 23281 transitions. [2021-10-08 16:14:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:14,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:14:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:14,275 INFO L225 Difference]: With dead ends: 5677 [2021-10-08 16:14:14,275 INFO L226 Difference]: Without dead ends: 5677 [2021-10-08 16:14:14,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:14:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-10-08 16:14:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5674. [2021-10-08 16:14:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5674 states, 5459 states have (on average 4.263601392196373) internal successors, (23275), 5673 states have internal predecessors, (23275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 23275 transitions. [2021-10-08 16:14:14,633 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 23275 transitions. Word has length 6 [2021-10-08 16:14:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:14,633 INFO L470 AbstractCegarLoop]: Abstraction has 5674 states and 23275 transitions. [2021-10-08 16:14:14,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 23275 transitions. [2021-10-08 16:14:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:14,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:14,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:14,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:14,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:14,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:14,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1390214296, now seen corresponding path program 1 times [2021-10-08 16:14:14,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:14,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482420191] [2021-10-08 16:14:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:14,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:14,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:14,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482420191] [2021-10-08 16:14:14,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482420191] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:14,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:14,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:14,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813114195] [2021-10-08 16:14:14,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:14,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:14,891 INFO L87 Difference]: Start difference. First operand 5674 states and 23275 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-08 16:14:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:14,945 INFO L93 Difference]: Finished difference Result 3956 states and 15885 transitions. [2021-10-08 16:14:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2021-10-08 16:14:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:14,967 INFO L225 Difference]: With dead ends: 3956 [2021-10-08 16:14:14,967 INFO L226 Difference]: Without dead ends: 3956 [2021-10-08 16:14:14,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2021-10-08 16:14:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3956. [2021-10-08 16:14:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3849 states have (on average 4.127045985970382) internal successors, (15885), 3955 states have internal predecessors, (15885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 15885 transitions. [2021-10-08 16:14:15,107 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 15885 transitions. Word has length 7 [2021-10-08 16:14:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 15885 transitions. [2021-10-08 16:14:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-08 16:14:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 15885 transitions. [2021-10-08 16:14:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:15,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:15,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:15,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 16:14:15,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:15,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:15,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1390214261, now seen corresponding path program 1 times [2021-10-08 16:14:15,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:15,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401196770] [2021-10-08 16:14:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:15,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:15,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:15,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401196770] [2021-10-08 16:14:15,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401196770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:15,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128974727] [2021-10-08 16:14:15,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:15,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:15,140 INFO L87 Difference]: Start difference. First operand 3956 states and 15885 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) [2021-10-08 16:14:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:15,315 INFO L93 Difference]: Finished difference Result 3374 states and 13511 transitions. [2021-10-08 16:14:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:15,317 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 [2021-10-08 16:14:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:15,336 INFO L225 Difference]: With dead ends: 3374 [2021-10-08 16:14:15,336 INFO L226 Difference]: Without dead ends: 3374 [2021-10-08 16:14:15,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2021-10-08 16:14:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3374. [2021-10-08 16:14:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3303 states have (on average 4.090523766273085) internal successors, (13511), 3373 states have internal predecessors, (13511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 13511 transitions. [2021-10-08 16:14:15,465 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 13511 transitions. Word has length 7 [2021-10-08 16:14:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:15,466 INFO L470 AbstractCegarLoop]: Abstraction has 3374 states and 13511 transitions. [2021-10-08 16:14:15,466 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) [2021-10-08 16:14:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 13511 transitions. [2021-10-08 16:14:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:14:15,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:15,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:15,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 16:14:15,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:15,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1390214526, now seen corresponding path program 1 times [2021-10-08 16:14:15,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:15,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124121756] [2021-10-08 16:14:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:15,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:15,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:15,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124121756] [2021-10-08 16:14:15,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124121756] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:15,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:15,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:15,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656642036] [2021-10-08 16:14:15,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:15,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:15,531 INFO L87 Difference]: Start difference. First operand 3374 states and 13511 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-08 16:14:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:15,594 INFO L93 Difference]: Finished difference Result 4521 states and 17527 transitions. [2021-10-08 16:14:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:15,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2021-10-08 16:14:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:15,623 INFO L225 Difference]: With dead ends: 4521 [2021-10-08 16:14:15,623 INFO L226 Difference]: Without dead ends: 4485 [2021-10-08 16:14:15,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2021-10-08 16:14:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 4345. [2021-10-08 16:14:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4259 states have (on average 4.003756750410894) internal successors, (17052), 4344 states have internal predecessors, (17052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 17052 transitions. [2021-10-08 16:14:15,951 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 17052 transitions. Word has length 7 [2021-10-08 16:14:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:15,951 INFO L470 AbstractCegarLoop]: Abstraction has 4345 states and 17052 transitions. [2021-10-08 16:14:15,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-08 16:14:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 17052 transitions. [2021-10-08 16:14:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:14:15,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:15,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:15,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:14:15,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:15,958 INFO L82 PathProgramCache]: Analyzing trace with hash 288541141, now seen corresponding path program 1 times [2021-10-08 16:14:15,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:15,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246388597] [2021-10-08 16:14:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:15,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:16,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:16,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246388597] [2021-10-08 16:14:16,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246388597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:16,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635224002] [2021-10-08 16:14:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:16,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:16,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:16,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:14:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:16,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:14:16,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:16,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635224002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:16,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:16,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:14:16,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275898697] [2021-10-08 16:14:16,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:16,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:16,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:16,141 INFO L87 Difference]: Start difference. First operand 4345 states and 17052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:16,180 INFO L93 Difference]: Finished difference Result 3489 states and 13576 transitions. [2021-10-08 16:14:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:16,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:14:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:16,200 INFO L225 Difference]: With dead ends: 3489 [2021-10-08 16:14:16,200 INFO L226 Difference]: Without dead ends: 3483 [2021-10-08 16:14:16,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:14:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-10-08 16:14:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3483. [2021-10-08 16:14:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3439 states have (on average 3.939808083745275) internal successors, (13549), 3482 states have internal predecessors, (13549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 13549 transitions. [2021-10-08 16:14:16,357 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 13549 transitions. Word has length 8 [2021-10-08 16:14:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:16,358 INFO L470 AbstractCegarLoop]: Abstraction has 3483 states and 13549 transitions. [2021-10-08 16:14:16,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 13549 transitions. [2021-10-08 16:14:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:14:16,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:16,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:16,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:16,575 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash -530181662, now seen corresponding path program 1 times [2021-10-08 16:14:16,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:16,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444037849] [2021-10-08 16:14:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:16,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:16,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:16,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444037849] [2021-10-08 16:14:16,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444037849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:16,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:16,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:16,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13417326] [2021-10-08 16:14:16,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:16,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:16,628 INFO L87 Difference]: Start difference. First operand 3483 states and 13549 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:16,687 INFO L93 Difference]: Finished difference Result 3931 states and 15318 transitions. [2021-10-08 16:14:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:16,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-10-08 16:14:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:16,711 INFO L225 Difference]: With dead ends: 3931 [2021-10-08 16:14:16,711 INFO L226 Difference]: Without dead ends: 3787 [2021-10-08 16:14:16,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-10-08 16:14:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3561. [2021-10-08 16:14:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3521 states have (on average 3.9832433967622833) internal successors, (14025), 3560 states have internal predecessors, (14025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 14025 transitions. [2021-10-08 16:14:16,867 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 14025 transitions. Word has length 11 [2021-10-08 16:14:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:16,868 INFO L470 AbstractCegarLoop]: Abstraction has 3561 states and 14025 transitions. [2021-10-08 16:14:16,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 14025 transitions. [2021-10-08 16:14:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:14:16,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:16,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:16,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:14:16,870 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:16,871 INFO L82 PathProgramCache]: Analyzing trace with hash -529964851, now seen corresponding path program 1 times [2021-10-08 16:14:16,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:16,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327974439] [2021-10-08 16:14:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:16,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:16,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:16,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327974439] [2021-10-08 16:14:16,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327974439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:16,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:16,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:16,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202043438] [2021-10-08 16:14:16,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:16,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:16,916 INFO L87 Difference]: Start difference. First operand 3561 states and 14025 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) [2021-10-08 16:14:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:17,010 INFO L93 Difference]: Finished difference Result 2615 states and 9927 transitions. [2021-10-08 16:14:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:17,011 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 [2021-10-08 16:14:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:17,025 INFO L225 Difference]: With dead ends: 2615 [2021-10-08 16:14:17,025 INFO L226 Difference]: Without dead ends: 2221 [2021-10-08 16:14:17,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-10-08 16:14:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2221. [2021-10-08 16:14:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2205 states have (on average 3.9523809523809526) internal successors, (8715), 2220 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 8715 transitions. [2021-10-08 16:14:17,106 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 8715 transitions. Word has length 11 [2021-10-08 16:14:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:17,106 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 8715 transitions. [2021-10-08 16:14:17,107 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) [2021-10-08 16:14:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 8715 transitions. [2021-10-08 16:14:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:14:17,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:17,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:17,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 16:14:17,108 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash 216248172, now seen corresponding path program 1 times [2021-10-08 16:14:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:17,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50040626] [2021-10-08 16:14:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:17,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50040626] [2021-10-08 16:14:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50040626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:17,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:14:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255973697] [2021-10-08 16:14:17,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:17,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:17,142 INFO L87 Difference]: Start difference. First operand 2221 states and 8715 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:17,169 INFO L93 Difference]: Finished difference Result 2565 states and 9651 transitions. [2021-10-08 16:14:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-10-08 16:14:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:17,182 INFO L225 Difference]: With dead ends: 2565 [2021-10-08 16:14:17,183 INFO L226 Difference]: Without dead ends: 2565 [2021-10-08 16:14:17,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-10-08 16:14:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2305. [2021-10-08 16:14:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2289 states have (on average 3.91131498470948) internal successors, (8953), 2304 states have internal predecessors, (8953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8953 transitions. [2021-10-08 16:14:17,263 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8953 transitions. Word has length 11 [2021-10-08 16:14:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:17,264 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 8953 transitions. [2021-10-08 16:14:17,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8953 transitions. [2021-10-08 16:14:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:14:17,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:17,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:17,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 16:14:17,265 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash 216248028, now seen corresponding path program 1 times [2021-10-08 16:14:17,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:17,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741322275] [2021-10-08 16:14:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:17,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:17,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741322275] [2021-10-08 16:14:17,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741322275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:17,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:17,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:14:17,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565977910] [2021-10-08 16:14:17,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:14:17,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:14:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:17,324 INFO L87 Difference]: Start difference. First operand 2305 states and 8953 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:17,345 INFO L93 Difference]: Finished difference Result 2181 states and 8207 transitions. [2021-10-08 16:14:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:14:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 [2021-10-08 16:14:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:17,355 INFO L225 Difference]: With dead ends: 2181 [2021-10-08 16:14:17,356 INFO L226 Difference]: Without dead ends: 2053 [2021-10-08 16:14:17,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:14:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-10-08 16:14:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2053. [2021-10-08 16:14:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2037 states have (on average 3.8296514482081494) internal successors, (7801), 2052 states have internal predecessors, (7801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 7801 transitions. [2021-10-08 16:14:17,427 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 7801 transitions. Word has length 11 [2021-10-08 16:14:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:17,427 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 7801 transitions. [2021-10-08 16:14:17,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 7801 transitions. [2021-10-08 16:14:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:14:17,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:17,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:17,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:14:17,430 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:17,430 INFO L82 PathProgramCache]: Analyzing trace with hash 914873527, now seen corresponding path program 1 times [2021-10-08 16:14:17,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:17,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556409293] [2021-10-08 16:14:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:17,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:17,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556409293] [2021-10-08 16:14:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556409293] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:17,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:14:17,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:14:17,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230324084] [2021-10-08 16:14:17,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:14:17,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:14:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:14:17,486 INFO L87 Difference]: Start difference. First operand 2053 states and 7801 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:17,554 INFO L93 Difference]: Finished difference Result 2677 states and 9880 transitions. [2021-10-08 16:14:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:14:17,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:14:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:17,565 INFO L225 Difference]: With dead ends: 2677 [2021-10-08 16:14:17,565 INFO L226 Difference]: Without dead ends: 2054 [2021-10-08 16:14:17,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:14:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-10-08 16:14:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2021-10-08 16:14:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2038 states have (on average 3.828263002944063) internal successors, (7802), 2053 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 7802 transitions. [2021-10-08 16:14:17,637 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 7802 transitions. Word has length 14 [2021-10-08 16:14:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:17,637 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 7802 transitions. [2021-10-08 16:14:17,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 7802 transitions. [2021-10-08 16:14:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:17,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:17,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:17,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 16:14:17,640 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash 376607541, now seen corresponding path program 1 times [2021-10-08 16:14:17,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:17,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879149821] [2021-10-08 16:14:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:17,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:17,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879149821] [2021-10-08 16:14:17,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879149821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:17,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726579988] [2021-10-08 16:14:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:17,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:17,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:14:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:18,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:14:18,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:18,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:18,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:18,265 INFO L354 Elim1Store]: treesize reduction 476, result has 10.9 percent of original size [2021-10-08 16:14:18,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:14:19,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:14:19,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:19,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:19,778 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:14:19,779 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 68 treesize of output 134 [2021-10-08 16:14:20,031 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 28 treesize of output 24 [2021-10-08 16:14:20,082 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 [2021-10-08 16:14:20,131 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 [2021-10-08 16:14:20,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:14:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:20,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726579988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:20,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:20,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 13 [2021-10-08 16:14:20,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847631807] [2021-10-08 16:14:20,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:14:20,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:14:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:20,264 INFO L87 Difference]: Start difference. First operand 2054 states and 7802 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:21,152 INFO L93 Difference]: Finished difference Result 8727 states and 33208 transitions. [2021-10-08 16:14:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:14:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:14:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:21,203 INFO L225 Difference]: With dead ends: 8727 [2021-10-08 16:14:21,203 INFO L226 Difference]: Without dead ends: 8727 [2021-10-08 16:14:21,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 582.4ms TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:14:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2021-10-08 16:14:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 4191. [2021-10-08 16:14:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 4175 states have (on average 4.376287425149701) internal successors, (18271), 4190 states have internal predecessors, (18271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 18271 transitions. [2021-10-08 16:14:21,448 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 18271 transitions. Word has length 15 [2021-10-08 16:14:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:21,449 INFO L470 AbstractCegarLoop]: Abstraction has 4191 states and 18271 transitions. [2021-10-08 16:14:21,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 18271 transitions. [2021-10-08 16:14:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:21,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:21,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:21,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:21,666 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,SelfDestructingSolverStorable15 [2021-10-08 16:14:21,667 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash 376607755, now seen corresponding path program 1 times [2021-10-08 16:14:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47189345] [2021-10-08 16:14:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:21,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:21,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:21,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47189345] [2021-10-08 16:14:21,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47189345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:21,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351139760] [2021-10-08 16:14:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:21,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:21,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:21,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:14:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:22,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:14:22,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:22,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:22,229 INFO L354 Elim1Store]: treesize reduction 476, result has 10.9 percent of original size [2021-10-08 16:14:22,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:14:23,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:14:24,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:24,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:24,137 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:14:24,137 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 68 treesize of output 134 [2021-10-08 16:14:24,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-08 16:14:24,496 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 [2021-10-08 16:14:24,557 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 [2021-10-08 16:14:24,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:14:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:24,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351139760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:24,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:24,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 13 [2021-10-08 16:14:24,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765837335] [2021-10-08 16:14:24,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:14:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:14:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:24,736 INFO L87 Difference]: Start difference. First operand 4191 states and 18271 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:25,680 INFO L93 Difference]: Finished difference Result 7100 states and 28432 transitions. [2021-10-08 16:14:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:14:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:14:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:25,718 INFO L225 Difference]: With dead ends: 7100 [2021-10-08 16:14:25,718 INFO L226 Difference]: Without dead ends: 7100 [2021-10-08 16:14:25,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 703.5ms TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:14:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-08 16:14:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 4671. [2021-10-08 16:14:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4655 states have (on average 4.337056928034372) internal successors, (20189), 4670 states have internal predecessors, (20189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 20189 transitions. [2021-10-08 16:14:25,946 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 20189 transitions. Word has length 15 [2021-10-08 16:14:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:25,947 INFO L470 AbstractCegarLoop]: Abstraction has 4671 states and 20189 transitions. [2021-10-08 16:14:25,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 20189 transitions. [2021-10-08 16:14:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:25,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:25,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:25,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:26,163 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,SelfDestructingSolverStorable16 [2021-10-08 16:14:26,164 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:26,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1067172901, now seen corresponding path program 2 times [2021-10-08 16:14:26,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:26,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195252784] [2021-10-08 16:14:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:26,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:26,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:26,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195252784] [2021-10-08 16:14:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195252784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:26,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806157857] [2021-10-08 16:14:26,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:26,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:26,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:26,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 16:14:26,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:26,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:26,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:14:26,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:26,774 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:26,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:26,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:26,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806157857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:26,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:26,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-08 16:14:26,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75369424] [2021-10-08 16:14:26,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:14:26,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:14:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:26,819 INFO L87 Difference]: Start difference. First operand 4671 states and 20189 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:27,010 INFO L93 Difference]: Finished difference Result 6675 states and 28361 transitions. [2021-10-08 16:14:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:14:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:27,046 INFO L225 Difference]: With dead ends: 6675 [2021-10-08 16:14:27,046 INFO L226 Difference]: Without dead ends: 6675 [2021-10-08 16:14:27,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2021-10-08 16:14:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 5173. [2021-10-08 16:14:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5157 states have (on average 4.363971301144076) internal successors, (22505), 5172 states have internal predecessors, (22505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 22505 transitions. [2021-10-08 16:14:27,282 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 22505 transitions. Word has length 15 [2021-10-08 16:14:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:27,282 INFO L470 AbstractCegarLoop]: Abstraction has 5173 states and 22505 transitions. [2021-10-08 16:14:27,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 22505 transitions. [2021-10-08 16:14:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:27,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:27,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:27,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:27,499 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,SelfDestructingSolverStorable17 [2021-10-08 16:14:27,500 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1067172900, now seen corresponding path program 1 times [2021-10-08 16:14:27,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:27,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765606629] [2021-10-08 16:14:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:27,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:27,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:27,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765606629] [2021-10-08 16:14:27,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765606629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:27,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640817284] [2021-10-08 16:14:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:27,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:27,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:27,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:27,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:14:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:27,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:14:27,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:28,157 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:28,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:28,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:14:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:28,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640817284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:28,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:28,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:14:28,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138228593] [2021-10-08 16:14:28,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:14:28,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:14:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:28,230 INFO L87 Difference]: Start difference. First operand 5173 states and 22505 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:28,840 INFO L93 Difference]: Finished difference Result 10117 states and 38849 transitions. [2021-10-08 16:14:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:14:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:14:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:28,900 INFO L225 Difference]: With dead ends: 10117 [2021-10-08 16:14:28,900 INFO L226 Difference]: Without dead ends: 10117 [2021-10-08 16:14:28,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 338.4ms TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:14:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2021-10-08 16:14:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 5282. [2021-10-08 16:14:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5266 states have (on average 4.3357387011014055) internal successors, (22832), 5281 states have internal predecessors, (22832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 22832 transitions. [2021-10-08 16:14:29,179 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 22832 transitions. Word has length 15 [2021-10-08 16:14:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:29,180 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 22832 transitions. [2021-10-08 16:14:29,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 22832 transitions. [2021-10-08 16:14:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:14:29,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:29,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:29,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:29,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:29,398 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1067172687, now seen corresponding path program 2 times [2021-10-08 16:14:29,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:29,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881423342] [2021-10-08 16:14:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:29,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:29,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:29,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881423342] [2021-10-08 16:14:29,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881423342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:29,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745644026] [2021-10-08 16:14:29,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:29,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:29,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:29,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:14:30,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:30,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:30,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:14:30,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:30,369 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:30,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:30,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:30,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745644026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:30,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:30,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2021-10-08 16:14:30,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648016130] [2021-10-08 16:14:30,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:14:30,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:14:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:30,467 INFO L87 Difference]: Start difference. First operand 5282 states and 22832 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:30,664 INFO L93 Difference]: Finished difference Result 6621 states and 27794 transitions. [2021-10-08 16:14:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:14:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:30,693 INFO L225 Difference]: With dead ends: 6621 [2021-10-08 16:14:30,693 INFO L226 Difference]: Without dead ends: 6621 [2021-10-08 16:14:30,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 300.4ms TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2021-10-08 16:14:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 4791. [2021-10-08 16:14:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4791 states, 4775 states have (on average 4.32523560209424) internal successors, (20653), 4790 states have internal predecessors, (20653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 20653 transitions. [2021-10-08 16:14:30,880 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 20653 transitions. Word has length 15 [2021-10-08 16:14:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:30,880 INFO L470 AbstractCegarLoop]: Abstraction has 4791 states and 20653 transitions. [2021-10-08 16:14:30,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 20653 transitions. [2021-10-08 16:14:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:30,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:30,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:30,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:31,097 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,SelfDestructingSolverStorable19 [2021-10-08 16:14:31,098 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1209827176, now seen corresponding path program 1 times [2021-10-08 16:14:31,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:31,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840678940] [2021-10-08 16:14:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:31,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:31,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:31,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840678940] [2021-10-08 16:14:31,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840678940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:31,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478914462] [2021-10-08 16:14:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:31,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:31,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:31,481 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) [2021-10-08 16:14:31,490 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 [2021-10-08 16:14:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:31,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:14:31,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:31,859 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:31,860 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 28 treesize of output 27 [2021-10-08 16:14:31,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:31,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478914462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:31,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:31,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-08 16:14:31,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795136922] [2021-10-08 16:14:31,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:14:31,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:14:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:31,906 INFO L87 Difference]: Start difference. First operand 4791 states and 20653 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:32,084 INFO L93 Difference]: Finished difference Result 6612 states and 28167 transitions. [2021-10-08 16:14:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:32,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:14:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:32,114 INFO L225 Difference]: With dead ends: 6612 [2021-10-08 16:14:32,114 INFO L226 Difference]: Without dead ends: 6612 [2021-10-08 16:14:32,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 198.8ms TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6612 states. [2021-10-08 16:14:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6612 to 5110. [2021-10-08 16:14:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5094 states have (on average 4.379269729093051) internal successors, (22308), 5109 states have internal predecessors, (22308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 22308 transitions. [2021-10-08 16:14:32,282 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 22308 transitions. Word has length 16 [2021-10-08 16:14:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:32,282 INFO L470 AbstractCegarLoop]: Abstraction has 5110 states and 22308 transitions. [2021-10-08 16:14:32,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 22308 transitions. [2021-10-08 16:14:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:32,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:32,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:32,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-08 16:14:32,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:32,494 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1209827175, now seen corresponding path program 1 times [2021-10-08 16:14:32,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:32,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914102152] [2021-10-08 16:14:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:32,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:33,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:33,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914102152] [2021-10-08 16:14:33,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914102152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:33,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795708307] [2021-10-08 16:14:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:33,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:33,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:33,079 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) [2021-10-08 16:14:33,081 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 [2021-10-08 16:14:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:33,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:14:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:33,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:33,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:33,506 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:14:33,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:14:34,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:14:35,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:35,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:35,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:35,634 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:14:35,635 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 68 treesize of output 134 [2021-10-08 16:14:35,997 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:14:35,998 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 53 treesize of output 52 [2021-10-08 16:14:36,103 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:36,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:14:36,251 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:36,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:14:36,546 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:36,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:14:36,625 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:14:36,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2021-10-08 16:14:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:36,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795708307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:36,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:36,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:14:36,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605888799] [2021-10-08 16:14:36,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:14:36,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:14:36,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:14:36,632 INFO L87 Difference]: Start difference. First operand 5110 states and 22308 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:37,618 INFO L93 Difference]: Finished difference Result 7181 states and 30777 transitions. [2021-10-08 16:14:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:14:37,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:14:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:37,663 INFO L225 Difference]: With dead ends: 7181 [2021-10-08 16:14:37,664 INFO L226 Difference]: Without dead ends: 7181 [2021-10-08 16:14:37,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 966.5ms TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:14:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7181 states. [2021-10-08 16:14:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7181 to 5525. [2021-10-08 16:14:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 5509 states have (on average 4.384098747504084) internal successors, (24152), 5524 states have internal predecessors, (24152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 24152 transitions. [2021-10-08 16:14:37,855 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 24152 transitions. Word has length 16 [2021-10-08 16:14:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 5525 states and 24152 transitions. [2021-10-08 16:14:37,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 24152 transitions. [2021-10-08 16:14:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:37,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:37,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:37,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-08 16:14:38,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 16:14:38,059 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:38,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1209826962, now seen corresponding path program 1 times [2021-10-08 16:14:38,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:38,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684997832] [2021-10-08 16:14:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:38,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:38,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:38,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684997832] [2021-10-08 16:14:38,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684997832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:38,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279971528] [2021-10-08 16:14:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:38,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:38,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:38,507 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) [2021-10-08 16:14:38,531 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 [2021-10-08 16:14:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:38,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:14:38,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:39,016 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:39,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:39,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:39,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279971528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:39,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:39,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-08 16:14:39,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324436548] [2021-10-08 16:14:39,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:14:39,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:14:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:39,068 INFO L87 Difference]: Start difference. First operand 5525 states and 24152 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:39,283 INFO L93 Difference]: Finished difference Result 6870 states and 29143 transitions. [2021-10-08 16:14:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:39,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:14:39,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:39,330 INFO L225 Difference]: With dead ends: 6870 [2021-10-08 16:14:39,330 INFO L226 Difference]: Without dead ends: 6870 [2021-10-08 16:14:39,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 185.9ms TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2021-10-08 16:14:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 5100. [2021-10-08 16:14:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5084 states have (on average 4.362116443745083) internal successors, (22177), 5099 states have internal predecessors, (22177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 22177 transitions. [2021-10-08 16:14:39,580 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 22177 transitions. Word has length 16 [2021-10-08 16:14:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:39,580 INFO L470 AbstractCegarLoop]: Abstraction has 5100 states and 22177 transitions. [2021-10-08 16:14:39,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 22177 transitions. [2021-10-08 16:14:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:39,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:39,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:39,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:39,797 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,SelfDestructingSolverStorable22 [2021-10-08 16:14:39,798 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1284942198, now seen corresponding path program 2 times [2021-10-08 16:14:39,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:39,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917928526] [2021-10-08 16:14:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:39,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:40,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:40,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917928526] [2021-10-08 16:14:40,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917928526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:40,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128370288] [2021-10-08 16:14:40,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:40,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:40,208 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) [2021-10-08 16:14:40,229 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 [2021-10-08 16:14:40,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:40,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:40,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:14:40,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:40,654 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:40,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:40,708 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:40,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:40,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128370288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:40,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:40,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:14:40,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763561018] [2021-10-08 16:14:40,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:14:40,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:14:40,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:40,760 INFO L87 Difference]: Start difference. First operand 5100 states and 22177 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:40,940 INFO L93 Difference]: Finished difference Result 6603 states and 27960 transitions. [2021-10-08 16:14:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:14:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:40,968 INFO L225 Difference]: With dead ends: 6603 [2021-10-08 16:14:40,968 INFO L226 Difference]: Without dead ends: 6603 [2021-10-08 16:14:40,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 219.4ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-10-08 16:14:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 5164. [2021-10-08 16:14:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5164 states, 5148 states have (on average 4.336829836829837) internal successors, (22326), 5163 states have internal predecessors, (22326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 22326 transitions. [2021-10-08 16:14:41,151 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 22326 transitions. Word has length 16 [2021-10-08 16:14:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:41,152 INFO L470 AbstractCegarLoop]: Abstraction has 5164 states and 22326 transitions. [2021-10-08 16:14:41,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 22326 transitions. [2021-10-08 16:14:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:14:41,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:41,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:41,180 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 [2021-10-08 16:14:41,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,362 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1284942412, now seen corresponding path program 2 times [2021-10-08 16:14:41,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:41,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819189545] [2021-10-08 16:14:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:41,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819189545] [2021-10-08 16:14:41,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819189545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596722515] [2021-10-08 16:14:41,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:41,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:41,818 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) [2021-10-08 16:14:41,837 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 [2021-10-08 16:14:42,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:42,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:14:42,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:42,440 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:42,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:42,508 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:42,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:14:42,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:42,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596722515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:42,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:42,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:14:42,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747024289] [2021-10-08 16:14:42,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:14:42,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:14:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:42,578 INFO L87 Difference]: Start difference. First operand 5164 states and 22326 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:42,792 INFO L93 Difference]: Finished difference Result 6434 states and 27059 transitions. [2021-10-08 16:14:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:42,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:14:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:42,825 INFO L225 Difference]: With dead ends: 6434 [2021-10-08 16:14:42,825 INFO L226 Difference]: Without dead ends: 6434 [2021-10-08 16:14:42,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 260.2ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2021-10-08 16:14:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 4682. [2021-10-08 16:14:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4666 states have (on average 4.3197599657093875) internal successors, (20156), 4681 states have internal predecessors, (20156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 20156 transitions. [2021-10-08 16:14:43,003 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 20156 transitions. Word has length 16 [2021-10-08 16:14:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 4682 states and 20156 transitions. [2021-10-08 16:14:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 20156 transitions. [2021-10-08 16:14:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:43,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:43,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:43,049 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 [2021-10-08 16:14:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,224 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1943334183, now seen corresponding path program 1 times [2021-10-08 16:14:43,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:43,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613267997] [2021-10-08 16:14:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:43,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:43,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613267997] [2021-10-08 16:14:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613267997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:43,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938827674] [2021-10-08 16:14:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:43,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:43,500 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) [2021-10-08 16:14:43,500 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 [2021-10-08 16:14:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:43,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:14:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:43,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2166 treesize of output 2038 [2021-10-08 16:14:44,257 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:44,258 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 [2021-10-08 16:14:44,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:14:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:44,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938827674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:44,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 16:14:44,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841510239] [2021-10-08 16:14:44,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:14:44,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:14:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:14:44,290 INFO L87 Difference]: Start difference. First operand 4682 states and 20156 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:44,806 INFO L93 Difference]: Finished difference Result 11153 states and 43609 transitions. [2021-10-08 16:14:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:14:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:44,841 INFO L225 Difference]: With dead ends: 11153 [2021-10-08 16:14:44,841 INFO L226 Difference]: Without dead ends: 11153 [2021-10-08 16:14:44,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 277.8ms TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11153 states. [2021-10-08 16:14:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11153 to 5267. [2021-10-08 16:14:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5251 states have (on average 4.299181108360313) internal successors, (22575), 5266 states have internal predecessors, (22575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 22575 transitions. [2021-10-08 16:14:45,024 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 22575 transitions. Word has length 18 [2021-10-08 16:14:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:45,025 INFO L470 AbstractCegarLoop]: Abstraction has 5267 states and 22575 transitions. [2021-10-08 16:14:45,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 22575 transitions. [2021-10-08 16:14:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:45,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:45,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:45,067 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 [2021-10-08 16:14:45,242 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,SelfDestructingSolverStorable25 [2021-10-08 16:14:45,243 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1943333969, now seen corresponding path program 1 times [2021-10-08 16:14:45,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:45,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629973813] [2021-10-08 16:14:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:45,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:45,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:45,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629973813] [2021-10-08 16:14:45,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629973813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892721411] [2021-10-08 16:14:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:45,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:45,500 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:45,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 16:14:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:14:45,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:45,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-10-08 16:14:46,172 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:46,177 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 [2021-10-08 16:14:46,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-08 16:14:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:46,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892721411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:46,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:46,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:14:46,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364780382] [2021-10-08 16:14:46,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:14:46,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:14:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:14:46,249 INFO L87 Difference]: Start difference. First operand 5267 states and 22575 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:46,969 INFO L93 Difference]: Finished difference Result 8468 states and 33855 transitions. [2021-10-08 16:14:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:14:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:46,995 INFO L225 Difference]: With dead ends: 8468 [2021-10-08 16:14:46,995 INFO L226 Difference]: Without dead ends: 8468 [2021-10-08 16:14:46,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 446.7ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:14:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-10-08 16:14:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 4727. [2021-10-08 16:14:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4727 states, 4711 states have (on average 4.3128847378475905) internal successors, (20318), 4726 states have internal predecessors, (20318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 20318 transitions. [2021-10-08 16:14:47,121 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 20318 transitions. Word has length 18 [2021-10-08 16:14:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:47,122 INFO L470 AbstractCegarLoop]: Abstraction has 4727 states and 20318 transitions. [2021-10-08 16:14:47,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 20318 transitions. [2021-10-08 16:14:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:47,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:47,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:47,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-08 16:14:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:14:47,331 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:47,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1293662589, now seen corresponding path program 2 times [2021-10-08 16:14:47,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:47,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166853816] [2021-10-08 16:14:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:47,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:47,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:47,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166853816] [2021-10-08 16:14:47,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166853816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:47,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538860245] [2021-10-08 16:14:47,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:47,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:47,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:47,629 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:47,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 16:14:47,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:47,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:14:47,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:47,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:47,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 504 treesize of output 472 [2021-10-08 16:14:48,149 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:48,149 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 28 treesize of output 27 [2021-10-08 16:14:48,195 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:48,196 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 [2021-10-08 16:14:48,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:48,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538860245] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:48,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:48,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:14:48,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592887844] [2021-10-08 16:14:48,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:14:48,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:14:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:48,241 INFO L87 Difference]: Start difference. First operand 4727 states and 20318 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:48,416 INFO L93 Difference]: Finished difference Result 6973 states and 29417 transitions. [2021-10-08 16:14:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:48,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:48,450 INFO L225 Difference]: With dead ends: 6973 [2021-10-08 16:14:48,450 INFO L226 Difference]: Without dead ends: 6973 [2021-10-08 16:14:48,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 192.1ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2021-10-08 16:14:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 5354. [2021-10-08 16:14:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5338 states have (on average 4.324653428250281) internal successors, (23085), 5353 states have internal predecessors, (23085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 23085 transitions. [2021-10-08 16:14:48,622 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 23085 transitions. Word has length 18 [2021-10-08 16:14:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:48,622 INFO L470 AbstractCegarLoop]: Abstraction has 5354 states and 23085 transitions. [2021-10-08 16:14:48,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 23085 transitions. [2021-10-08 16:14:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:48,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:48,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:48,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:14:48,840 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1293662590, now seen corresponding path program 1 times [2021-10-08 16:14:48,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:48,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696480304] [2021-10-08 16:14:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:48,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:49,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:49,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696480304] [2021-10-08 16:14:49,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696480304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750152888] [2021-10-08 16:14:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:49,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:49,144 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:49,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 16:14:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:49,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:14:49,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:49,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-10-08 16:14:49,836 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:49,836 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 27 treesize of output 26 [2021-10-08 16:14:49,880 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:49,880 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 [2021-10-08 16:14:49,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:14:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:49,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750152888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:49,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-08 16:14:49,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748082372] [2021-10-08 16:14:49,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:14:49,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:14:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:14:49,904 INFO L87 Difference]: Start difference. First operand 5354 states and 23085 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:50,420 INFO L93 Difference]: Finished difference Result 9752 states and 39551 transitions. [2021-10-08 16:14:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:14:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:50,456 INFO L225 Difference]: With dead ends: 9752 [2021-10-08 16:14:50,456 INFO L226 Difference]: Without dead ends: 9752 [2021-10-08 16:14:50,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 290.5ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:14:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2021-10-08 16:14:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 5725. [2021-10-08 16:14:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5725 states, 5709 states have (on average 4.2713259765282885) internal successors, (24385), 5724 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5725 states to 5725 states and 24385 transitions. [2021-10-08 16:14:50,630 INFO L78 Accepts]: Start accepts. Automaton has 5725 states and 24385 transitions. Word has length 18 [2021-10-08 16:14:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:50,631 INFO L470 AbstractCegarLoop]: Abstraction has 5725 states and 24385 transitions. [2021-10-08 16:14:50,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5725 states and 24385 transitions. [2021-10-08 16:14:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:50,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:50,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:50,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:50,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:14:50,835 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1293662803, now seen corresponding path program 2 times [2021-10-08 16:14:50,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:50,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622999618] [2021-10-08 16:14:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:50,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:51,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:51,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622999618] [2021-10-08 16:14:51,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622999618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:51,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858551321] [2021-10-08 16:14:51,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:51,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:51,228 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:51,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 16:14:51,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:51,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:51,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:14:51,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:51,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 137 [2021-10-08 16:14:51,920 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:51,920 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 28 treesize of output 27 [2021-10-08 16:14:51,977 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:51,978 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 [2021-10-08 16:14:52,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:52,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858551321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:52,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:52,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:14:52,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931963071] [2021-10-08 16:14:52,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:14:52,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:14:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:14:52,048 INFO L87 Difference]: Start difference. First operand 5725 states and 24385 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:52,257 INFO L93 Difference]: Finished difference Result 7562 states and 31330 transitions. [2021-10-08 16:14:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:52,282 INFO L225 Difference]: With dead ends: 7562 [2021-10-08 16:14:52,282 INFO L226 Difference]: Without dead ends: 7562 [2021-10-08 16:14:52,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:14:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2021-10-08 16:14:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 5260. [2021-10-08 16:14:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5244 states have (on average 4.271548436308161) internal successors, (22400), 5259 states have internal predecessors, (22400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 22400 transitions. [2021-10-08 16:14:52,416 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 22400 transitions. Word has length 18 [2021-10-08 16:14:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:52,416 INFO L470 AbstractCegarLoop]: Abstraction has 5260 states and 22400 transitions. [2021-10-08 16:14:52,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 22400 transitions. [2021-10-08 16:14:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:52,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:52,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:52,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:52,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:52,623 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:52,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1068866574, now seen corresponding path program 1 times [2021-10-08 16:14:52,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:52,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6453662] [2021-10-08 16:14:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:52,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:52,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:52,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6453662] [2021-10-08 16:14:52,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6453662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:52,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068856782] [2021-10-08 16:14:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:52,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:52,685 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:52,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 16:14:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:53,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:14:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:53,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068856782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:53,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:53,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 16:14:53,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528715966] [2021-10-08 16:14:53,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:14:53,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:14:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:14:53,127 INFO L87 Difference]: Start difference. First operand 5260 states and 22400 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:53,285 INFO L93 Difference]: Finished difference Result 10045 states and 40569 transitions. [2021-10-08 16:14:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:53,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:53,318 INFO L225 Difference]: With dead ends: 10045 [2021-10-08 16:14:53,319 INFO L226 Difference]: Without dead ends: 9453 [2021-10-08 16:14:53,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:14:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2021-10-08 16:14:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 7043. [2021-10-08 16:14:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7043 states, 7025 states have (on average 4.149750889679716) internal successors, (29152), 7042 states have internal predecessors, (29152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7043 states to 7043 states and 29152 transitions. [2021-10-08 16:14:53,516 INFO L78 Accepts]: Start accepts. Automaton has 7043 states and 29152 transitions. Word has length 18 [2021-10-08 16:14:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 7043 states and 29152 transitions. [2021-10-08 16:14:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 7043 states and 29152 transitions. [2021-10-08 16:14:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:53,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:53,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:53,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:53,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-08 16:14:53,727 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:53,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2080363341, now seen corresponding path program 3 times [2021-10-08 16:14:53,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:53,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985100952] [2021-10-08 16:14:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:53,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:54,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:54,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985100952] [2021-10-08 16:14:54,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985100952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:54,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818817382] [2021-10-08 16:14:54,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:54,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:54,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:54,081 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:54,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 16:14:54,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:14:54,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:54,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:14:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:54,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 357 [2021-10-08 16:14:54,738 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:54,738 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 28 treesize of output 27 [2021-10-08 16:14:54,812 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:54,812 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 28 treesize of output 27 [2021-10-08 16:14:54,867 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:54,867 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 [2021-10-08 16:14:54,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:54,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818817382] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:54,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:54,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2021-10-08 16:14:54,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273812286] [2021-10-08 16:14:54,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:14:54,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:14:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:14:54,912 INFO L87 Difference]: Start difference. First operand 7043 states and 29152 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:55,146 INFO L93 Difference]: Finished difference Result 8097 states and 33176 transitions. [2021-10-08 16:14:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:55,189 INFO L225 Difference]: With dead ends: 8097 [2021-10-08 16:14:55,189 INFO L226 Difference]: Without dead ends: 8097 [2021-10-08 16:14:55,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 265.1ms TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8097 states. [2021-10-08 16:14:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8097 to 6986. [2021-10-08 16:14:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6986 states, 6969 states have (on average 4.120964270340077) internal successors, (28719), 6985 states have internal predecessors, (28719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 28719 transitions. [2021-10-08 16:14:55,408 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 28719 transitions. Word has length 18 [2021-10-08 16:14:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:55,408 INFO L470 AbstractCegarLoop]: Abstraction has 6986 states and 28719 transitions. [2021-10-08 16:14:55,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 28719 transitions. [2021-10-08 16:14:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:55,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:55,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:55,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:55,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-08 16:14:55,614 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2080363340, now seen corresponding path program 2 times [2021-10-08 16:14:55,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:55,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211080089] [2021-10-08 16:14:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:55,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:55,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:55,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211080089] [2021-10-08 16:14:55,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211080089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:55,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294454367] [2021-10-08 16:14:55,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:55,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:55,970 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:55,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 16:14:56,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:14:56,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:56,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:14:56,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:56,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:56,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:56,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:56,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 136 [2021-10-08 16:14:56,853 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:56,854 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 31 treesize of output 30 [2021-10-08 16:14:56,995 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:56,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:14:57,072 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:57,072 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 [2021-10-08 16:14:57,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:57,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294454367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:57,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:57,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2021-10-08 16:14:57,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769733013] [2021-10-08 16:14:57,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:14:57,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:14:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:14:57,125 INFO L87 Difference]: Start difference. First operand 6986 states and 28719 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:57,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:57,399 INFO L93 Difference]: Finished difference Result 8040 states and 32743 transitions. [2021-10-08 16:14:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:14:57,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:57,428 INFO L225 Difference]: With dead ends: 8040 [2021-10-08 16:14:57,428 INFO L226 Difference]: Without dead ends: 8040 [2021-10-08 16:14:57,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 325.5ms TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8040 states. [2021-10-08 16:14:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8040 to 6207. [2021-10-08 16:14:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6207 states, 6191 states have (on average 4.1269584881279275) internal successors, (25550), 6206 states have internal predecessors, (25550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 25550 transitions. [2021-10-08 16:14:57,583 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 25550 transitions. Word has length 18 [2021-10-08 16:14:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:57,584 INFO L470 AbstractCegarLoop]: Abstraction has 6207 states and 25550 transitions. [2021-10-08 16:14:57,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 25550 transitions. [2021-10-08 16:14:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:14:57,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:57,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:57,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-08 16:14:57,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:57,788 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:14:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2080363127, now seen corresponding path program 3 times [2021-10-08 16:14:57,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:57,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417924592] [2021-10-08 16:14:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:57,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:14:58,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:58,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417924592] [2021-10-08 16:14:58,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417924592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:58,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886252765] [2021-10-08 16:14:58,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:58,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:58,251 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:58,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 16:14:58,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:14:58,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:58,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:14:58,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:58,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:14:58,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2021-10-08 16:14:59,000 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:59,000 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 28 treesize of output 27 [2021-10-08 16:14:59,097 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:59,098 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 28 treesize of output 27 [2021-10-08 16:14:59,215 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:14:59,215 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 [2021-10-08 16:14:59,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:14:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:14:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886252765] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:14:59,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:14:59,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2021-10-08 16:14:59,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257074463] [2021-10-08 16:14:59,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:14:59,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:14:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:14:59,279 INFO L87 Difference]: Start difference. First operand 6207 states and 25550 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:59,542 INFO L93 Difference]: Finished difference Result 7266 states and 29642 transitions. [2021-10-08 16:14:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:14:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:14:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:59,567 INFO L225 Difference]: With dead ends: 7266 [2021-10-08 16:14:59,568 INFO L226 Difference]: Without dead ends: 7145 [2021-10-08 16:14:59,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 395.6ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:14:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2021-10-08 16:14:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 5055. [2021-10-08 16:14:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5039 states have (on average 4.160944631871403) internal successors, (20967), 5054 states have internal predecessors, (20967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 20967 transitions. [2021-10-08 16:14:59,801 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 20967 transitions. Word has length 18 [2021-10-08 16:14:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:59,801 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 20967 transitions. [2021-10-08 16:14:59,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 20967 transitions. [2021-10-08 16:14:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:14:59,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:59,805 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:14:59,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:00,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 16:15:00,006 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:00,010 INFO L82 PathProgramCache]: Analyzing trace with hash 642048908, now seen corresponding path program 2 times [2021-10-08 16:15:00,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:00,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558425637] [2021-10-08 16:15:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:00,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:15:00,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:00,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558425637] [2021-10-08 16:15:00,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558425637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:00,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432508540] [2021-10-08 16:15:00,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:00,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:00,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:00,070 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 16:15:00,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:00,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:00,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:15:00,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:00,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432508540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:00,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:00,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2021-10-08 16:15:00,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361026217] [2021-10-08 16:15:00,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:15:00,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:15:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:15:00,671 INFO L87 Difference]: Start difference. First operand 5055 states and 20967 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:00,788 INFO L93 Difference]: Finished difference Result 10342 states and 38341 transitions. [2021-10-08 16:15:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:15:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:15:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:00,818 INFO L225 Difference]: With dead ends: 10342 [2021-10-08 16:15:00,818 INFO L226 Difference]: Without dead ends: 9844 [2021-10-08 16:15:00,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:15:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9844 states. [2021-10-08 16:15:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9844 to 5004. [2021-10-08 16:15:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 4986 states have (on average 4.058363417569193) internal successors, (20235), 5003 states have internal predecessors, (20235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 20235 transitions. [2021-10-08 16:15:01,036 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 20235 transitions. Word has length 19 [2021-10-08 16:15:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 20235 transitions. [2021-10-08 16:15:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 20235 transitions. [2021-10-08 16:15:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:15:01,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:01,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:01,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:01,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:01,240 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash -874153281, now seen corresponding path program 1 times [2021-10-08 16:15:01,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:01,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520229822] [2021-10-08 16:15:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:01,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:01,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:01,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520229822] [2021-10-08 16:15:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520229822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544459791] [2021-10-08 16:15:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:01,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:01,396 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:01,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 16:15:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:01,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:15:01,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:01,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544459791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:01,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:01,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-08 16:15:01,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905595945] [2021-10-08 16:15:01,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:15:01,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:15:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:15:01,983 INFO L87 Difference]: Start difference. First operand 5004 states and 20235 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-08 16:15:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:02,090 INFO L93 Difference]: Finished difference Result 6607 states and 27723 transitions. [2021-10-08 16:15:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:02,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 20 [2021-10-08 16:15:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:02,230 INFO L225 Difference]: With dead ends: 6607 [2021-10-08 16:15:02,230 INFO L226 Difference]: Without dead ends: 6607 [2021-10-08 16:15:02,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:15:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2021-10-08 16:15:02,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6341. [2021-10-08 16:15:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6323 states have (on average 4.237387316147398) internal successors, (26793), 6340 states have internal predecessors, (26793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 26793 transitions. [2021-10-08 16:15:02,376 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 26793 transitions. Word has length 20 [2021-10-08 16:15:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:02,376 INFO L470 AbstractCegarLoop]: Abstraction has 6341 states and 26793 transitions. [2021-10-08 16:15:02,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-08 16:15:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 26793 transitions. [2021-10-08 16:15:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:15:02,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:02,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:02,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-08 16:15:02,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-08 16:15:02,585 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash -874153329, now seen corresponding path program 1 times [2021-10-08 16:15:02,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:02,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112591128] [2021-10-08 16:15:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:02,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:02,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:02,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112591128] [2021-10-08 16:15:02,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112591128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:02,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027283729] [2021-10-08 16:15:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:02,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:02,928 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:02,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 16:15:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:03,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:15:03,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:03,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027283729] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:03,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:03,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-08 16:15:03,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547828420] [2021-10-08 16:15:03,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:15:03,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:15:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:15:03,532 INFO L87 Difference]: Start difference. First operand 6341 states and 26793 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-08 16:15:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:03,747 INFO L93 Difference]: Finished difference Result 6607 states and 27297 transitions. [2021-10-08 16:15:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 20 [2021-10-08 16:15:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:03,772 INFO L225 Difference]: With dead ends: 6607 [2021-10-08 16:15:03,773 INFO L226 Difference]: Without dead ends: 6607 [2021-10-08 16:15:03,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 169.3ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:15:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2021-10-08 16:15:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6341. [2021-10-08 16:15:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6323 states have (on average 4.170014233749803) internal successors, (26367), 6340 states have internal predecessors, (26367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 26367 transitions. [2021-10-08 16:15:03,933 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 26367 transitions. Word has length 20 [2021-10-08 16:15:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:03,933 INFO L470 AbstractCegarLoop]: Abstraction has 6341 states and 26367 transitions. [2021-10-08 16:15:03,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-08 16:15:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 26367 transitions. [2021-10-08 16:15:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:15:03,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:03,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:03,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:04,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-08 16:15:04,138 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 919255741, now seen corresponding path program 2 times [2021-10-08 16:15:04,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:04,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220136589] [2021-10-08 16:15:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:04,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:04,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:04,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220136589] [2021-10-08 16:15:04,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220136589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:04,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956315256] [2021-10-08 16:15:04,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:04,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:04,641 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:04,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:15:05,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:15:05,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:05,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:15:05,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:05,381 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:05,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:15:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:05,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956315256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:05,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:05,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-08 16:15:05,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020969738] [2021-10-08 16:15:05,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:15:05,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:15:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:15:05,427 INFO L87 Difference]: Start difference. First operand 6341 states and 26367 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-08 16:15:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:05,638 INFO L93 Difference]: Finished difference Result 6725 states and 27927 transitions. [2021-10-08 16:15:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:05,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 20 [2021-10-08 16:15:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:05,671 INFO L225 Difference]: With dead ends: 6725 [2021-10-08 16:15:05,672 INFO L226 Difference]: Without dead ends: 6725 [2021-10-08 16:15:05,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 249.2ms TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:15:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2021-10-08 16:15:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6459. [2021-10-08 16:15:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6459 states, 6441 states have (on average 4.1914299021891015) internal successors, (26997), 6458 states have internal predecessors, (26997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6459 states to 6459 states and 26997 transitions. [2021-10-08 16:15:06,065 INFO L78 Accepts]: Start accepts. Automaton has 6459 states and 26997 transitions. Word has length 20 [2021-10-08 16:15:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:06,066 INFO L470 AbstractCegarLoop]: Abstraction has 6459 states and 26997 transitions. [2021-10-08 16:15:06,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-08 16:15:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states and 26997 transitions. [2021-10-08 16:15:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:15:06,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:06,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:06,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:06,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 16:15:06,284 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 919255693, now seen corresponding path program 2 times [2021-10-08 16:15:06,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:06,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193360432] [2021-10-08 16:15:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:06,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:06,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:06,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193360432] [2021-10-08 16:15:06,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193360432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:06,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033200833] [2021-10-08 16:15:06,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:06,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:06,671 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:06,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 16:15:07,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:15:07,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:07,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:15:07,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:07,441 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:07,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:15:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:07,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033200833] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:07,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:07,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-08 16:15:07,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666464650] [2021-10-08 16:15:07,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:15:07,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:15:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:15:07,484 INFO L87 Difference]: Start difference. First operand 6459 states and 26997 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-08 16:15:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:07,656 INFO L93 Difference]: Finished difference Result 6725 states and 27868 transitions. [2021-10-08 16:15:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 20 [2021-10-08 16:15:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:07,678 INFO L225 Difference]: With dead ends: 6725 [2021-10-08 16:15:07,678 INFO L226 Difference]: Without dead ends: 6725 [2021-10-08 16:15:07,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 223.2ms TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:15:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2021-10-08 16:15:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6223. [2021-10-08 16:15:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6223 states, 6205 states have (on average 4.1727639000805805) internal successors, (25892), 6222 states have internal predecessors, (25892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 25892 transitions. [2021-10-08 16:15:07,908 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 25892 transitions. Word has length 20 [2021-10-08 16:15:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:07,909 INFO L470 AbstractCegarLoop]: Abstraction has 6223 states and 25892 transitions. [2021-10-08 16:15:07,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-08 16:15:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 25892 transitions. [2021-10-08 16:15:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:15:07,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:07,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:07,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:08,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-08 16:15:08,114 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:08,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1328945057, now seen corresponding path program 1 times [2021-10-08 16:15:08,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:08,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015916837] [2021-10-08 16:15:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:08,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:08,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:08,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015916837] [2021-10-08 16:15:08,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015916837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:08,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412178049] [2021-10-08 16:15:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:08,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:08,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:08,521 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:08,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 16:15:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:09,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:15:09,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:09,579 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:09,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:15:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:09,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412178049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:09,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:09,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-08 16:15:09,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265100055] [2021-10-08 16:15:09,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:15:09,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:15:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:15:09,624 INFO L87 Difference]: Start difference. First operand 6223 states and 25892 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:10,225 INFO L93 Difference]: Finished difference Result 7399 states and 30225 transitions. [2021-10-08 16:15:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:15:10,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:15:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:10,247 INFO L225 Difference]: With dead ends: 7399 [2021-10-08 16:15:10,248 INFO L226 Difference]: Without dead ends: 7399 [2021-10-08 16:15:10,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 622.5ms TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:15:10,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2021-10-08 16:15:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 6844. [2021-10-08 16:15:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 6826 states have (on average 4.145912686785819) internal successors, (28300), 6843 states have internal predecessors, (28300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 28300 transitions. [2021-10-08 16:15:10,394 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 28300 transitions. Word has length 21 [2021-10-08 16:15:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 6844 states and 28300 transitions. [2021-10-08 16:15:10,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 28300 transitions. [2021-10-08 16:15:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:15:10,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:10,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:10,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:10,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 16:15:10,599 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1328945105, now seen corresponding path program 1 times [2021-10-08 16:15:10,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:10,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239283538] [2021-10-08 16:15:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:10,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:10,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:10,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239283538] [2021-10-08 16:15:10,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239283538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:10,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298846474] [2021-10-08 16:15:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:10,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:10,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:10,815 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:10,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 16:15:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:11,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:15:11,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:11,616 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:11,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:15:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:11,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298846474] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:11,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:11,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-08 16:15:11,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181895074] [2021-10-08 16:15:11,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:15:11,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:11,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:15:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:15:11,639 INFO L87 Difference]: Start difference. First operand 6844 states and 28300 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:11,817 INFO L93 Difference]: Finished difference Result 8164 states and 34375 transitions. [2021-10-08 16:15:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:15:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:11,854 INFO L225 Difference]: With dead ends: 8164 [2021-10-08 16:15:11,854 INFO L226 Difference]: Without dead ends: 8164 [2021-10-08 16:15:11,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 158.3ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:15:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8164 states. [2021-10-08 16:15:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8164 to 7484. [2021-10-08 16:15:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7484 states, 7466 states have (on average 4.268684703991428) internal successors, (31870), 7483 states have internal predecessors, (31870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7484 states to 7484 states and 31870 transitions. [2021-10-08 16:15:12,121 INFO L78 Accepts]: Start accepts. Automaton has 7484 states and 31870 transitions. Word has length 21 [2021-10-08 16:15:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:12,122 INFO L470 AbstractCegarLoop]: Abstraction has 7484 states and 31870 transitions. [2021-10-08 16:15:12,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7484 states and 31870 transitions. [2021-10-08 16:15:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:15:12,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:12,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:12,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-08 16:15:12,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:12,327 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1567633763, now seen corresponding path program 2 times [2021-10-08 16:15:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:12,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906450088] [2021-10-08 16:15:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:12,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:12,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:12,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906450088] [2021-10-08 16:15:12,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906450088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:12,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114255626] [2021-10-08 16:15:12,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:12,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:12,650 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:12,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 16:15:13,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:15:13,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:13,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:15:13,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:13,502 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:13,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:15:13,569 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:13,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:15:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:13,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114255626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:13,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:13,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:15:13,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170779584] [2021-10-08 16:15:13,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:15:13,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:15:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:15:13,606 INFO L87 Difference]: Start difference. First operand 7484 states and 31870 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:13,885 INFO L93 Difference]: Finished difference Result 8484 states and 36344 transitions. [2021-10-08 16:15:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:15:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:13,918 INFO L225 Difference]: With dead ends: 8484 [2021-10-08 16:15:13,918 INFO L226 Difference]: Without dead ends: 8484 [2021-10-08 16:15:13,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 251.6ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:15:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8484 states. [2021-10-08 16:15:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8484 to 7193. [2021-10-08 16:15:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7193 states, 7175 states have (on average 4.288780487804878) internal successors, (30772), 7192 states have internal predecessors, (30772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 30772 transitions. [2021-10-08 16:15:14,098 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 30772 transitions. Word has length 21 [2021-10-08 16:15:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:14,098 INFO L470 AbstractCegarLoop]: Abstraction has 7193 states and 30772 transitions. [2021-10-08 16:15:14,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 30772 transitions. [2021-10-08 16:15:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:15:14,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:14,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:14,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:14,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:14,303 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1567633811, now seen corresponding path program 2 times [2021-10-08 16:15:14,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:14,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426031204] [2021-10-08 16:15:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:14,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:14,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:14,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426031204] [2021-10-08 16:15:14,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426031204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:14,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76753482] [2021-10-08 16:15:14,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:14,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:14,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:14,788 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:14,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 16:15:15,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:15:15,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:15,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:15:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:15,635 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:15,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:15:15,698 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:15,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:15:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:15:15,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76753482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:15:15,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:15:15,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:15:15,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102965248] [2021-10-08 16:15:15,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:15:15,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:15:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:15:15,734 INFO L87 Difference]: Start difference. First operand 7193 states and 30772 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:15,933 INFO L93 Difference]: Finished difference Result 7459 states and 31335 transitions. [2021-10-08 16:15:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:15:15,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:15:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:15,957 INFO L225 Difference]: With dead ends: 7459 [2021-10-08 16:15:15,957 INFO L226 Difference]: Without dead ends: 7459 [2021-10-08 16:15:15,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 265.2ms TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:15:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2021-10-08 16:15:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 5856. [2021-10-08 16:15:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5838 states have (on average 4.15775950668037) internal successors, (24273), 5855 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 24273 transitions. [2021-10-08 16:15:16,201 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 24273 transitions. Word has length 21 [2021-10-08 16:15:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:16,201 INFO L470 AbstractCegarLoop]: Abstraction has 5856 states and 24273 transitions. [2021-10-08 16:15:16,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 24273 transitions. [2021-10-08 16:15:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:16,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:16,207 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:16,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:16,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-08 16:15:16,408 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:16,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1434874092, now seen corresponding path program 3 times [2021-10-08 16:15:16,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:16,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641200796] [2021-10-08 16:15:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:16,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:16,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:16,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641200796] [2021-10-08 16:15:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641200796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:16,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219570298] [2021-10-08 16:15:16,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:16,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:16,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:16,705 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:16,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 16:15:17,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:15:17,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:17,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:15:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:17,832 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-08 16:15:17,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 38 treesize of output 29 [2021-10-08 16:15:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 16:15:17,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219570298] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:17,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:17,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-08 16:15:17,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580081544] [2021-10-08 16:15:17,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:15:17,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:15:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:15:17,858 INFO L87 Difference]: Start difference. First operand 5856 states and 24273 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:19,348 INFO L93 Difference]: Finished difference Result 16391 states and 64853 transitions. [2021-10-08 16:15:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:15:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:19,408 INFO L225 Difference]: With dead ends: 16391 [2021-10-08 16:15:19,408 INFO L226 Difference]: Without dead ends: 16391 [2021-10-08 16:15:19,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 740.9ms TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:15:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16391 states. [2021-10-08 16:15:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16391 to 9699. [2021-10-08 16:15:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9699 states, 9681 states have (on average 4.156285507695486) internal successors, (40237), 9698 states have internal predecessors, (40237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 40237 transitions. [2021-10-08 16:15:19,771 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 40237 transitions. Word has length 22 [2021-10-08 16:15:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:19,771 INFO L470 AbstractCegarLoop]: Abstraction has 9699 states and 40237 transitions. [2021-10-08 16:15:19,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 40237 transitions. [2021-10-08 16:15:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:19,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:19,779 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:19,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:19,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:19,980 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1434874162, now seen corresponding path program 1 times [2021-10-08 16:15:19,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:19,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226053596] [2021-10-08 16:15:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:19,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:20,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:20,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226053596] [2021-10-08 16:15:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226053596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:20,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785767741] [2021-10-08 16:15:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:20,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:20,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:20,303 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:20,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 16:15:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:20,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:15:20,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:21,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-08 16:15:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:21,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785767741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:21,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:21,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:15:21,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755804213] [2021-10-08 16:15:21,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:15:21,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:15:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:15:21,621 INFO L87 Difference]: Start difference. First operand 9699 states and 40237 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:22,441 INFO L93 Difference]: Finished difference Result 20142 states and 79907 transitions. [2021-10-08 16:15:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:15:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:22,511 INFO L225 Difference]: With dead ends: 20142 [2021-10-08 16:15:22,512 INFO L226 Difference]: Without dead ends: 20142 [2021-10-08 16:15:22,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 566.2ms TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:15:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20142 states. [2021-10-08 16:15:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20142 to 10682. [2021-10-08 16:15:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10682 states, 10664 states have (on average 4.149006001500375) internal successors, (44245), 10681 states have internal predecessors, (44245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 44245 transitions. [2021-10-08 16:15:23,130 INFO L78 Accepts]: Start accepts. Automaton has 10682 states and 44245 transitions. Word has length 22 [2021-10-08 16:15:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:23,130 INFO L470 AbstractCegarLoop]: Abstraction has 10682 states and 44245 transitions. [2021-10-08 16:15:23,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 10682 states and 44245 transitions. [2021-10-08 16:15:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:23,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:23,139 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:23,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:23,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-08 16:15:23,340 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1803293392, now seen corresponding path program 2 times [2021-10-08 16:15:23,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:23,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743375884] [2021-10-08 16:15:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:23,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:23,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:23,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743375884] [2021-10-08 16:15:23,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743375884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:23,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167731172] [2021-10-08 16:15:23,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:23,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:23,788 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:23,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 16:15:24,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:24,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:24,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:15:24,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:24,832 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:15:24,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 27 [2021-10-08 16:15:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167731172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:24,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:15:24,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327239778] [2021-10-08 16:15:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:15:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:15:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:15:24,864 INFO L87 Difference]: Start difference. First operand 10682 states and 44245 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:28,075 INFO L93 Difference]: Finished difference Result 60933 states and 248590 transitions. [2021-10-08 16:15:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:15:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:28,689 INFO L225 Difference]: With dead ends: 60933 [2021-10-08 16:15:28,689 INFO L226 Difference]: Without dead ends: 60599 [2021-10-08 16:15:28,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1672.1ms TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:15:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60599 states. [2021-10-08 16:15:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60599 to 19252. [2021-10-08 16:15:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19252 states, 19234 states have (on average 4.618176146407404) internal successors, (88826), 19251 states have internal predecessors, (88826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19252 states to 19252 states and 88826 transitions. [2021-10-08 16:15:30,039 INFO L78 Accepts]: Start accepts. Automaton has 19252 states and 88826 transitions. Word has length 22 [2021-10-08 16:15:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 19252 states and 88826 transitions. [2021-10-08 16:15:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 19252 states and 88826 transitions. [2021-10-08 16:15:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:30,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:30,050 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:30,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:30,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:30,251 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1117764612, now seen corresponding path program 4 times [2021-10-08 16:15:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:30,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556636883] [2021-10-08 16:15:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:30,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:30,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:30,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556636883] [2021-10-08 16:15:30,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556636883] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:30,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60854806] [2021-10-08 16:15:30,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:30,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:30,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:30,904 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:30,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 16:15:31,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:31,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:31,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:15:31,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:31,982 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:31,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:15:32,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-10-08 16:15:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:32,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60854806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:32,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:32,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:15:32,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639242205] [2021-10-08 16:15:32,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:15:32,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:32,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:15:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:15:32,264 INFO L87 Difference]: Start difference. First operand 19252 states and 88826 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:35,326 INFO L93 Difference]: Finished difference Result 54162 states and 232531 transitions. [2021-10-08 16:15:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:15:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:35,685 INFO L225 Difference]: With dead ends: 54162 [2021-10-08 16:15:35,686 INFO L226 Difference]: Without dead ends: 53904 [2021-10-08 16:15:35,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 2213.5ms TimeCoverageRelationStatistics Valid=378, Invalid=1974, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:15:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53904 states. [2021-10-08 16:15:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53904 to 25325. [2021-10-08 16:15:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25325 states, 25304 states have (on average 4.728936136579197) internal successors, (119661), 25324 states have internal predecessors, (119661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25325 states to 25325 states and 119661 transitions. [2021-10-08 16:15:37,351 INFO L78 Accepts]: Start accepts. Automaton has 25325 states and 119661 transitions. Word has length 22 [2021-10-08 16:15:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:37,351 INFO L470 AbstractCegarLoop]: Abstraction has 25325 states and 119661 transitions. [2021-10-08 16:15:37,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 25325 states and 119661 transitions. [2021-10-08 16:15:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:37,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:37,364 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:37,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:37,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 16:15:37,565 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1142673802, now seen corresponding path program 3 times [2021-10-08 16:15:37,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:37,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400341687] [2021-10-08 16:15:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:37,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:38,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:38,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400341687] [2021-10-08 16:15:38,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400341687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:38,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428556651] [2021-10-08 16:15:38,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:38,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:38,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:38,913 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:38,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 16:15:39,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:15:39,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:39,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:15:39,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:39,853 INFO L354 Elim1Store]: treesize reduction 476, result has 10.9 percent of original size [2021-10-08 16:15:39,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:15:41,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:15:41,758 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-08 16:15:41,758 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 42 treesize of output 49 [2021-10-08 16:15:41,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:41,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:42,113 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:15:42,114 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 68 treesize of output 134 [2021-10-08 16:15:42,430 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 0 case distinctions, treesize of input 44 treesize of output 43 [2021-10-08 16:15:42,498 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:15:42,499 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 56 treesize of output 55 [2021-10-08 16:15:42,617 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:42,617 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 45 treesize of output 44 [2021-10-08 16:15:42,979 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:42,980 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 45 treesize of output 44 [2021-10-08 16:15:43,820 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-10-08 16:15:43,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 60 [2021-10-08 16:15:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:43,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428556651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:43,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:43,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 16:15:43,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541572141] [2021-10-08 16:15:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:15:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:15:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:15:43,883 INFO L87 Difference]: Start difference. First operand 25325 states and 119661 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:49,672 INFO L93 Difference]: Finished difference Result 56284 states and 252598 transitions. [2021-10-08 16:15:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:15:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:50,015 INFO L225 Difference]: With dead ends: 56284 [2021-10-08 16:15:50,015 INFO L226 Difference]: Without dead ends: 56255 [2021-10-08 16:15:50,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3894.7ms TimeCoverageRelationStatistics Valid=331, Invalid=2321, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:15:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56255 states. [2021-10-08 16:15:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56255 to 28619. [2021-10-08 16:15:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28619 states, 28598 states have (on average 4.741380516120008) internal successors, (135594), 28618 states have internal predecessors, (135594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28619 states to 28619 states and 135594 transitions. [2021-10-08 16:15:52,082 INFO L78 Accepts]: Start accepts. Automaton has 28619 states and 135594 transitions. Word has length 22 [2021-10-08 16:15:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:52,083 INFO L470 AbstractCegarLoop]: Abstraction has 28619 states and 135594 transitions. [2021-10-08 16:15:52,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28619 states and 135594 transitions. [2021-10-08 16:15:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:52,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:52,094 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:52,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:52,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:52,295 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash 481232758, now seen corresponding path program 1 times [2021-10-08 16:15:52,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:52,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33150054] [2021-10-08 16:15:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:52,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:52,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:52,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33150054] [2021-10-08 16:15:52,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33150054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:52,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134256875] [2021-10-08 16:15:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:52,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:52,547 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 16:15:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:53,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:15:53,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:53,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:53,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:53,450 INFO L354 Elim1Store]: treesize reduction 476, result has 10.9 percent of original size [2021-10-08 16:15:53,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:15:55,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:15:55,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:15:55,523 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:15:55,524 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 68 treesize of output 134 [2021-10-08 16:15:55,746 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 [2021-10-08 16:15:55,765 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 28 treesize of output 24 [2021-10-08 16:15:55,824 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 [2021-10-08 16:15:56,054 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:15:56,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:15:56,229 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:15:56,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 19 [2021-10-08 16:15:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:15:56,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134256875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:56,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:56,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-08 16:15:56,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124540427] [2021-10-08 16:15:56,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:15:56,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:15:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:15:56,259 INFO L87 Difference]: Start difference. First operand 28619 states and 135594 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:57,587 INFO L93 Difference]: Finished difference Result 36837 states and 169532 transitions. [2021-10-08 16:15:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:15:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:15:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:57,775 INFO L225 Difference]: With dead ends: 36837 [2021-10-08 16:15:57,776 INFO L226 Difference]: Without dead ends: 36837 [2021-10-08 16:15:57,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 924.4ms TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:15:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36837 states. [2021-10-08 16:15:58,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36837 to 28769. [2021-10-08 16:15:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28769 states, 28748 states have (on average 4.74318213440935) internal successors, (136357), 28768 states have internal predecessors, (136357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28769 states to 28769 states and 136357 transitions. [2021-10-08 16:15:59,136 INFO L78 Accepts]: Start accepts. Automaton has 28769 states and 136357 transitions. Word has length 22 [2021-10-08 16:15:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 28769 states and 136357 transitions. [2021-10-08 16:15:59,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 28769 states and 136357 transitions. [2021-10-08 16:15:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:15:59,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:59,147 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:15:59,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:59,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 16:15:59,348 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:15:59,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:59,349 INFO L82 PathProgramCache]: Analyzing trace with hash 481232972, now seen corresponding path program 4 times [2021-10-08 16:15:59,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:59,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125940785] [2021-10-08 16:15:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:59,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:15:59,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:59,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125940785] [2021-10-08 16:15:59,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125940785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:59,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851713017] [2021-10-08 16:15:59,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:59,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:59,681 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:59,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 16:16:00,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:16:00,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:00,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:16:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:01,143 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:01,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:16:01,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:16:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:01,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851713017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:01,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:01,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-08 16:16:01,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644391759] [2021-10-08 16:16:01,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:16:01,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:01,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:16:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:16:01,282 INFO L87 Difference]: Start difference. First operand 28769 states and 136357 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:02,922 INFO L93 Difference]: Finished difference Result 45377 states and 204386 transitions. [2021-10-08 16:16:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:16:02,922 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:16:02,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:03,198 INFO L225 Difference]: With dead ends: 45377 [2021-10-08 16:16:03,198 INFO L226 Difference]: Without dead ends: 45340 [2021-10-08 16:16:03,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 778.8ms TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:16:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45340 states. [2021-10-08 16:16:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45340 to 27986. [2021-10-08 16:16:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27986 states, 27968 states have (on average 4.6479190503432495) internal successors, (129993), 27985 states have internal predecessors, (129993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27986 states to 27986 states and 129993 transitions. [2021-10-08 16:16:04,793 INFO L78 Accepts]: Start accepts. Automaton has 27986 states and 129993 transitions. Word has length 22 [2021-10-08 16:16:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:04,793 INFO L470 AbstractCegarLoop]: Abstraction has 27986 states and 129993 transitions. [2021-10-08 16:16:04,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 27986 states and 129993 transitions. [2021-10-08 16:16:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:04,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:04,803 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:04,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-08 16:16:05,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-08 16:16:05,004 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1512938007, now seen corresponding path program 1 times [2021-10-08 16:16:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:05,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825525339] [2021-10-08 16:16:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:05,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:16:05,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:05,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825525339] [2021-10-08 16:16:05,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825525339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:05,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317693596] [2021-10-08 16:16:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:05,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:05,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:05,070 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:05,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 16:16:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:16:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:06,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317693596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:06,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:06,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6] total 9 [2021-10-08 16:16:06,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827379205] [2021-10-08 16:16:06,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:16:06,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:16:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:16:06,121 INFO L87 Difference]: Start difference. First operand 27986 states and 129993 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:06,973 INFO L93 Difference]: Finished difference Result 47422 states and 220785 transitions. [2021-10-08 16:16:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:16:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:07,241 INFO L225 Difference]: With dead ends: 47422 [2021-10-08 16:16:07,242 INFO L226 Difference]: Without dead ends: 43503 [2021-10-08 16:16:07,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:16:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43503 states. [2021-10-08 16:16:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43503 to 35288. [2021-10-08 16:16:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35288 states, 35268 states have (on average 4.860468413292503) internal successors, (171419), 35287 states have internal predecessors, (171419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35288 states to 35288 states and 171419 transitions. [2021-10-08 16:16:08,990 INFO L78 Accepts]: Start accepts. Automaton has 35288 states and 171419 transitions. Word has length 23 [2021-10-08 16:16:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:08,990 INFO L470 AbstractCegarLoop]: Abstraction has 35288 states and 171419 transitions. [2021-10-08 16:16:08,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 35288 states and 171419 transitions. [2021-10-08 16:16:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:08,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:08,999 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:09,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:09,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-10-08 16:16:09,200 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash -126331219, now seen corresponding path program 1 times [2021-10-08 16:16:09,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:09,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816133648] [2021-10-08 16:16:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:09,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:09,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:09,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816133648] [2021-10-08 16:16:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816133648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:09,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815503129] [2021-10-08 16:16:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:09,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:09,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:09,909 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:09,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 16:16:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:10,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:16:10,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:10,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:11,030 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:16:11,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:16:12,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:16:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:12,812 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:16:12,813 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 68 treesize of output 134 [2021-10-08 16:16:13,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-10-08 16:16:13,105 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 32 treesize of output 28 [2021-10-08 16:16:13,166 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 [2021-10-08 16:16:13,239 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 [2021-10-08 16:16:13,720 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-08 16:16:13,720 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 [2021-10-08 16:16:13,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:16:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:13,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815503129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:13,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:13,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-08 16:16:13,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056536775] [2021-10-08 16:16:13,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:16:13,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:16:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:16:13,888 INFO L87 Difference]: Start difference. First operand 35288 states and 171419 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:16,060 INFO L93 Difference]: Finished difference Result 51360 states and 239806 transitions. [2021-10-08 16:16:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:16:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:16,396 INFO L225 Difference]: With dead ends: 51360 [2021-10-08 16:16:16,396 INFO L226 Difference]: Without dead ends: 51333 [2021-10-08 16:16:16,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1839.5ms TimeCoverageRelationStatistics Valid=215, Invalid=1345, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:16:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51333 states. [2021-10-08 16:16:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51333 to 37749. [2021-10-08 16:16:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37749 states, 37729 states have (on average 4.85621140236953) internal successors, (183220), 37748 states have internal predecessors, (183220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37749 states to 37749 states and 183220 transitions. [2021-10-08 16:16:18,207 INFO L78 Accepts]: Start accepts. Automaton has 37749 states and 183220 transitions. Word has length 23 [2021-10-08 16:16:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:18,207 INFO L470 AbstractCegarLoop]: Abstraction has 37749 states and 183220 transitions. [2021-10-08 16:16:18,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37749 states and 183220 transitions. [2021-10-08 16:16:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:18,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:18,215 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:18,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:18,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-10-08 16:16:18,423 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:18,424 INFO L82 PathProgramCache]: Analyzing trace with hash -126331362, now seen corresponding path program 1 times [2021-10-08 16:16:18,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:18,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996014907] [2021-10-08 16:16:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:18,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:18,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:18,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996014907] [2021-10-08 16:16:18,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996014907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:18,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215544414] [2021-10-08 16:16:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:18,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:18,695 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:18,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 16:16:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:16:19,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:19,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:19,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:19,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:19,812 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:16:19,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:16:21,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:16:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:21,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:21,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:21,734 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:16:21,735 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 68 treesize of output 134 [2021-10-08 16:16:21,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:16:22,027 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:16:22,027 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 53 treesize of output 52 [2021-10-08 16:16:22,105 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:22,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:16:22,212 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:22,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:16:22,560 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:22,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:16:22,722 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:16:22,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2021-10-08 16:16:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:22,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215544414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:22,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:22,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-08 16:16:22,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949840418] [2021-10-08 16:16:22,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:16:22,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:16:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:16:22,759 INFO L87 Difference]: Start difference. First operand 37749 states and 183220 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:24,583 INFO L93 Difference]: Finished difference Result 47243 states and 224137 transitions. [2021-10-08 16:16:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:16:24,583 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:24,802 INFO L225 Difference]: With dead ends: 47243 [2021-10-08 16:16:24,803 INFO L226 Difference]: Without dead ends: 47243 [2021-10-08 16:16:24,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1238.5ms TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:16:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47243 states. [2021-10-08 16:16:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47243 to 37483. [2021-10-08 16:16:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37483 states, 37463 states have (on average 4.844620025091424) internal successors, (181494), 37482 states have internal predecessors, (181494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37483 states to 37483 states and 181494 transitions. [2021-10-08 16:16:26,884 INFO L78 Accepts]: Start accepts. Automaton has 37483 states and 181494 transitions. Word has length 23 [2021-10-08 16:16:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:26,884 INFO L470 AbstractCegarLoop]: Abstraction has 37483 states and 181494 transitions. [2021-10-08 16:16:26,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 37483 states and 181494 transitions. [2021-10-08 16:16:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:26,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:26,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:26,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:27,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:27,109 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash -126331149, now seen corresponding path program 1 times [2021-10-08 16:16:27,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:27,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608896908] [2021-10-08 16:16:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:27,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:27,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:27,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608896908] [2021-10-08 16:16:27,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608896908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:27,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354668412] [2021-10-08 16:16:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:27,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:27,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:27,555 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:27,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 16:16:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:28,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:16:28,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:28,934 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:28,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:16:28,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:16:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:29,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354668412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:29,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:29,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-08 16:16:29,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122805997] [2021-10-08 16:16:29,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:16:29,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:16:29,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:16:29,048 INFO L87 Difference]: Start difference. First operand 37483 states and 181494 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:30,664 INFO L93 Difference]: Finished difference Result 57198 states and 272103 transitions. [2021-10-08 16:16:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:16:30,664 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:30,976 INFO L225 Difference]: With dead ends: 57198 [2021-10-08 16:16:30,977 INFO L226 Difference]: Without dead ends: 57162 [2021-10-08 16:16:30,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 719.7ms TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:16:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57162 states. [2021-10-08 16:16:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57162 to 37857. [2021-10-08 16:16:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37857 states, 37837 states have (on average 4.826783307344662) internal successors, (182631), 37856 states have internal predecessors, (182631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37857 states to 37857 states and 182631 transitions. [2021-10-08 16:16:32,902 INFO L78 Accepts]: Start accepts. Automaton has 37857 states and 182631 transitions. Word has length 23 [2021-10-08 16:16:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:32,903 INFO L470 AbstractCegarLoop]: Abstraction has 37857 states and 182631 transitions. [2021-10-08 16:16:32,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 37857 states and 182631 transitions. [2021-10-08 16:16:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:33,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:33,257 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:33,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:33,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:33,458 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1537195729, now seen corresponding path program 1 times [2021-10-08 16:16:33,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:33,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721422675] [2021-10-08 16:16:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:33,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:33,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:33,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721422675] [2021-10-08 16:16:33,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721422675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:33,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001815521] [2021-10-08 16:16:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:33,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:33,767 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:33,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 16:16:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:16:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:34,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:34,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:34,939 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:16:34,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:16:35,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:16:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:36,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:36,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:36,630 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:16:36,630 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 68 treesize of output 134 [2021-10-08 16:16:36,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-10-08 16:16:36,909 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 32 treesize of output 28 [2021-10-08 16:16:37,244 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 [2021-10-08 16:16:37,302 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 [2021-10-08 16:16:37,585 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:37,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-10-08 16:16:37,674 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:16:37,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 19 [2021-10-08 16:16:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:37,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001815521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:37,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-08 16:16:37,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563730883] [2021-10-08 16:16:37,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:16:37,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:37,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:16:37,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:16:37,702 INFO L87 Difference]: Start difference. First operand 37857 states and 182631 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:39,156 INFO L93 Difference]: Finished difference Result 48941 states and 231525 transitions. [2021-10-08 16:16:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:16:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:39,723 INFO L225 Difference]: With dead ends: 48941 [2021-10-08 16:16:39,723 INFO L226 Difference]: Without dead ends: 48941 [2021-10-08 16:16:39,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1072.4ms TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:16:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48941 states. [2021-10-08 16:16:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48941 to 37967. [2021-10-08 16:16:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37967 states, 37947 states have (on average 4.823833241099428) internal successors, (183050), 37966 states have internal predecessors, (183050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37967 states to 37967 states and 183050 transitions. [2021-10-08 16:16:41,627 INFO L78 Accepts]: Start accepts. Automaton has 37967 states and 183050 transitions. Word has length 23 [2021-10-08 16:16:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:41,627 INFO L470 AbstractCegarLoop]: Abstraction has 37967 states and 183050 transitions. [2021-10-08 16:16:41,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 37967 states and 183050 transitions. [2021-10-08 16:16:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:41,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:41,637 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:41,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:41,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:41,853 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash -67285997, now seen corresponding path program 2 times [2021-10-08 16:16:41,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:41,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453675137] [2021-10-08 16:16:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:41,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:42,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:42,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453675137] [2021-10-08 16:16:42,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453675137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:42,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111725851] [2021-10-08 16:16:42,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:42,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:42,213 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:42,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 16:16:43,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:43,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:43,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:16:43,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:43,454 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:16:43,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:16:45,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:16:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:45,426 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:16:45,426 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 68 treesize of output 134 [2021-10-08 16:16:45,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-10-08 16:16:45,671 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 32 treesize of output 28 [2021-10-08 16:16:45,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:16:45,786 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 [2021-10-08 16:16:46,114 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:46,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:16:46,180 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:16:46,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 21 [2021-10-08 16:16:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:46,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111725851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:46,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:46,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-08 16:16:46,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346840259] [2021-10-08 16:16:46,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:16:46,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:16:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:16:46,210 INFO L87 Difference]: Start difference. First operand 37967 states and 183050 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:49,527 INFO L93 Difference]: Finished difference Result 65456 states and 286627 transitions. [2021-10-08 16:16:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:16:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:50,160 INFO L225 Difference]: With dead ends: 65456 [2021-10-08 16:16:50,161 INFO L226 Difference]: Without dead ends: 64874 [2021-10-08 16:16:50,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1959.9ms TimeCoverageRelationStatistics Valid=264, Invalid=1542, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:16:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64874 states. [2021-10-08 16:16:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64874 to 36510. [2021-10-08 16:16:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36510 states, 36470 states have (on average 4.7898546750754045) internal successors, (174686), 36509 states have internal predecessors, (174686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36510 states to 36510 states and 174686 transitions. [2021-10-08 16:16:52,148 INFO L78 Accepts]: Start accepts. Automaton has 36510 states and 174686 transitions. Word has length 23 [2021-10-08 16:16:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:52,148 INFO L470 AbstractCegarLoop]: Abstraction has 36510 states and 174686 transitions. [2021-10-08 16:16:52,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 36510 states and 174686 transitions. [2021-10-08 16:16:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:16:52,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:52,155 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:16:52,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:52,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 16:16:52,356 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:16:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 232155929, now seen corresponding path program 2 times [2021-10-08 16:16:52,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:52,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094998658] [2021-10-08 16:16:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:52,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:16:52,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:52,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094998658] [2021-10-08 16:16:52,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094998658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:52,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483344111] [2021-10-08 16:16:52,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:52,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:52,669 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:52,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 16:16:53,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:53,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:53,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:16:53,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:53,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:53,920 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:16:53,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:16:55,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-08 16:16:55,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:55,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:55,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:16:55,908 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:16:55,909 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 68 treesize of output 134 [2021-10-08 16:16:56,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-10-08 16:16:56,204 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 32 treesize of output 28 [2021-10-08 16:16:56,269 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 [2021-10-08 16:16:56,458 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 [2021-10-08 16:16:56,743 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:16:56,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-10-08 16:16:57,010 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-08 16:16:57,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 22 [2021-10-08 16:16:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:16:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483344111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:57,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:57,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-08 16:16:57,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471779983] [2021-10-08 16:16:57,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:16:57,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:16:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:16:57,053 INFO L87 Difference]: Start difference. First operand 36510 states and 174686 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:59,751 INFO L93 Difference]: Finished difference Result 63810 states and 288412 transitions. [2021-10-08 16:16:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:16:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:16:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:00,396 INFO L225 Difference]: With dead ends: 63810 [2021-10-08 16:17:00,397 INFO L226 Difference]: Without dead ends: 63700 [2021-10-08 16:17:00,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1798.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:17:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63700 states. [2021-10-08 16:17:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63700 to 37038. [2021-10-08 16:17:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37038 states, 36998 states have (on average 4.775879777285259) internal successors, (176698), 37037 states have internal predecessors, (176698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:02,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37038 states to 37038 states and 176698 transitions. [2021-10-08 16:17:02,438 INFO L78 Accepts]: Start accepts. Automaton has 37038 states and 176698 transitions. Word has length 23 [2021-10-08 16:17:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:02,439 INFO L470 AbstractCegarLoop]: Abstraction has 37038 states and 176698 transitions. [2021-10-08 16:17:02,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 37038 states and 176698 transitions. [2021-10-08 16:17:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:02,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:02,445 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:02,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:02,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-08 16:17:02,650 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash -513638513, now seen corresponding path program 2 times [2021-10-08 16:17:02,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:02,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44428636] [2021-10-08 16:17:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:02,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:17:03,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44428636] [2021-10-08 16:17:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44428636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896878317] [2021-10-08 16:17:03,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:17:03,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:03,040 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:03,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 16:17:04,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:17:04,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:17:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:04,433 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:17:04,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:17:04,507 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:17:04,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:17:04,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-10-08 16:17:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:17:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896878317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:04,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:04,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-08 16:17:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250172322] [2021-10-08 16:17:04,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:17:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:17:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:17:04,607 INFO L87 Difference]: Start difference. First operand 37038 states and 176698 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:06,403 INFO L93 Difference]: Finished difference Result 49684 states and 229625 transitions. [2021-10-08 16:17:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:17:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:06,679 INFO L225 Difference]: With dead ends: 49684 [2021-10-08 16:17:06,679 INFO L226 Difference]: Without dead ends: 49657 [2021-10-08 16:17:06,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 874.7ms TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:17:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49657 states. [2021-10-08 16:17:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49657 to 38627. [2021-10-08 16:17:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38627 states, 38587 states have (on average 4.7804960219763135) internal successors, (184465), 38626 states have internal predecessors, (184465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38627 states to 38627 states and 184465 transitions. [2021-10-08 16:17:08,424 INFO L78 Accepts]: Start accepts. Automaton has 38627 states and 184465 transitions. Word has length 23 [2021-10-08 16:17:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:08,425 INFO L470 AbstractCegarLoop]: Abstraction has 38627 states and 184465 transitions. [2021-10-08 16:17:08,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 38627 states and 184465 transitions. [2021-10-08 16:17:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:08,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:08,432 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:08,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:08,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-08 16:17:08,635 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:08,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2040877371, now seen corresponding path program 3 times [2021-10-08 16:17:08,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:08,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999407944] [2021-10-08 16:17:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:08,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:09,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:09,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999407944] [2021-10-08 16:17:09,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999407944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:09,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887723874] [2021-10-08 16:17:09,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:17:09,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:09,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:09,756 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:09,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 16:17:10,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:17:10,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:10,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:17:10,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:11,457 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:17:11,458 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 39 treesize of output 38 [2021-10-08 16:17:11,743 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:17:11,744 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 39 treesize of output 38 [2021-10-08 16:17:11,865 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-08 16:17:11,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 27 [2021-10-08 16:17:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:17:11,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887723874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:11,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:11,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-08 16:17:11,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12736473] [2021-10-08 16:17:11,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:17:11,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:17:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:17:11,895 INFO L87 Difference]: Start difference. First operand 38627 states and 184465 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:15,036 INFO L93 Difference]: Finished difference Result 45795 states and 191121 transitions. [2021-10-08 16:17:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:17:15,037 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:15,245 INFO L225 Difference]: With dead ends: 45795 [2021-10-08 16:17:15,246 INFO L226 Difference]: Without dead ends: 44868 [2021-10-08 16:17:15,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1981.6ms TimeCoverageRelationStatistics Valid=256, Invalid=1814, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:17:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44868 states. [2021-10-08 16:17:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44868 to 23777. [2021-10-08 16:17:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23777 states, 23737 states have (on average 4.557399839912373) internal successors, (108179), 23776 states have internal predecessors, (108179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23777 states to 23777 states and 108179 transitions. [2021-10-08 16:17:16,668 INFO L78 Accepts]: Start accepts. Automaton has 23777 states and 108179 transitions. Word has length 23 [2021-10-08 16:17:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:16,669 INFO L470 AbstractCegarLoop]: Abstraction has 23777 states and 108179 transitions. [2021-10-08 16:17:16,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 23777 states and 108179 transitions. [2021-10-08 16:17:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:16,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:16,676 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:16,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:16,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-08 16:17:16,877 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2040877372, now seen corresponding path program 2 times [2021-10-08 16:17:16,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:16,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800768339] [2021-10-08 16:17:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:16,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:17:17,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:17,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800768339] [2021-10-08 16:17:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800768339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:17,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456339434] [2021-10-08 16:17:17,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:17:17,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:17,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:17,395 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:17,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 16:17:18,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:17:18,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:18,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:17:18,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:18,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:18,795 INFO L354 Elim1Store]: treesize reduction 460, result has 11.2 percent of original size [2021-10-08 16:17:18,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 63 [2021-10-08 16:17:20,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:17:20,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:20,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:17:20,709 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:17:20,710 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 68 treesize of output 134 [2021-10-08 16:17:20,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:17:21,024 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:17:21,025 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 43 treesize of output 42 [2021-10-08 16:17:21,120 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:17:21,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:17:21,401 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:17:21,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:17:21,636 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:17:21,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:17:21,725 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-10-08 16:17:21,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 18 [2021-10-08 16:17:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:17:21,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456339434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:21,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:21,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-08 16:17:21,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329214082] [2021-10-08 16:17:21,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:17:21,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:17:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:17:21,764 INFO L87 Difference]: Start difference. First operand 23777 states and 108179 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:23,992 INFO L93 Difference]: Finished difference Result 26068 states and 116599 transitions. [2021-10-08 16:17:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:17:23,993 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:24,093 INFO L225 Difference]: With dead ends: 26068 [2021-10-08 16:17:24,093 INFO L226 Difference]: Without dead ends: 26058 [2021-10-08 16:17:24,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1620.9ms TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:17:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26058 states. [2021-10-08 16:17:24,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26058 to 23410. [2021-10-08 16:17:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23410 states, 23370 states have (on average 4.557680787334189) internal successors, (106513), 23409 states have internal predecessors, (106513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23410 states to 23410 states and 106513 transitions. [2021-10-08 16:17:24,881 INFO L78 Accepts]: Start accepts. Automaton has 23410 states and 106513 transitions. Word has length 23 [2021-10-08 16:17:24,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:24,881 INFO L470 AbstractCegarLoop]: Abstraction has 23410 states and 106513 transitions. [2021-10-08 16:17:24,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 23410 states and 106513 transitions. [2021-10-08 16:17:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:24,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:24,887 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:24,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:25,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:25,088 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -145049431, now seen corresponding path program 2 times [2021-10-08 16:17:25,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:25,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445741016] [2021-10-08 16:17:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:25,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:25,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:25,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445741016] [2021-10-08 16:17:25,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445741016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:25,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924563616] [2021-10-08 16:17:25,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:17:25,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:25,765 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:25,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 16:17:27,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:17:27,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:27,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:17:27,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:27,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:17:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:17:27,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924563616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:27,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:27,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 18 [2021-10-08 16:17:27,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005942312] [2021-10-08 16:17:27,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:17:27,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:17:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:17:27,215 INFO L87 Difference]: Start difference. First operand 23410 states and 106513 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:30,794 INFO L93 Difference]: Finished difference Result 88560 states and 377635 transitions. [2021-10-08 16:17:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:17:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:31,333 INFO L225 Difference]: With dead ends: 88560 [2021-10-08 16:17:31,334 INFO L226 Difference]: Without dead ends: 88560 [2021-10-08 16:17:31,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1714.5ms TimeCoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:17:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88560 states. [2021-10-08 16:17:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88560 to 33788. [2021-10-08 16:17:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33788 states, 33748 states have (on average 4.907698233969421) internal successors, (165625), 33787 states have internal predecessors, (165625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33788 states to 33788 states and 165625 transitions. [2021-10-08 16:17:34,017 INFO L78 Accepts]: Start accepts. Automaton has 33788 states and 165625 transitions. Word has length 23 [2021-10-08 16:17:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:34,017 INFO L470 AbstractCegarLoop]: Abstraction has 33788 states and 165625 transitions. [2021-10-08 16:17:34,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 33788 states and 165625 transitions. [2021-10-08 16:17:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:34,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:34,024 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:34,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:34,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:34,231 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash -145049430, now seen corresponding path program 1 times [2021-10-08 16:17:34,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:34,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744044571] [2021-10-08 16:17:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:34,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:17:34,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:34,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744044571] [2021-10-08 16:17:34,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744044571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:34,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026749582] [2021-10-08 16:17:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:34,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:34,637 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:34,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 16:17:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:35,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:17:35,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:36,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:17:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:17:36,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026749582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:36,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:36,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-08 16:17:36,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171403536] [2021-10-08 16:17:36,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:17:36,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:36,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:17:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:17:36,020 INFO L87 Difference]: Start difference. First operand 33788 states and 165625 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:38,906 INFO L93 Difference]: Finished difference Result 87995 states and 372144 transitions. [2021-10-08 16:17:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:17:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:39,500 INFO L225 Difference]: With dead ends: 87995 [2021-10-08 16:17:39,500 INFO L226 Difference]: Without dead ends: 87995 [2021-10-08 16:17:39,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 825.9ms TimeCoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:17:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87995 states. [2021-10-08 16:17:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87995 to 33563. [2021-10-08 16:17:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33563 states, 33523 states have (on average 4.807028010619574) internal successors, (161146), 33562 states have internal predecessors, (161146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33563 states to 33563 states and 161146 transitions. [2021-10-08 16:17:42,269 INFO L78 Accepts]: Start accepts. Automaton has 33563 states and 161146 transitions. Word has length 23 [2021-10-08 16:17:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:42,269 INFO L470 AbstractCegarLoop]: Abstraction has 33563 states and 161146 transitions. [2021-10-08 16:17:42,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 33563 states and 161146 transitions. [2021-10-08 16:17:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:42,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:42,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:42,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:42,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:42,494 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:42,495 INFO L82 PathProgramCache]: Analyzing trace with hash -145049217, now seen corresponding path program 5 times [2021-10-08 16:17:42,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:42,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671907100] [2021-10-08 16:17:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:42,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:43,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:43,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671907100] [2021-10-08 16:17:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671907100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:43,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297782810] [2021-10-08 16:17:43,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:17:43,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:43,090 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:43,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 16:17:44,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:17:44,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:44,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:17:44,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:44,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:17:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:17:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297782810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:44,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:44,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 18 [2021-10-08 16:17:44,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324588451] [2021-10-08 16:17:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:17:44,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:17:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:17:44,593 INFO L87 Difference]: Start difference. First operand 33563 states and 161146 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:49,837 INFO L93 Difference]: Finished difference Result 111459 states and 494434 transitions. [2021-10-08 16:17:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:17:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:17:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:51,074 INFO L225 Difference]: With dead ends: 111459 [2021-10-08 16:17:51,075 INFO L226 Difference]: Without dead ends: 111385 [2021-10-08 16:17:51,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 2547.9ms TimeCoverageRelationStatistics Valid=377, Invalid=3283, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:17:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111385 states. [2021-10-08 16:17:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111385 to 60631. [2021-10-08 16:17:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60631 states, 60591 states have (on average 4.9468567939132875) internal successors, (299735), 60630 states have internal predecessors, (299735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60631 states to 60631 states and 299735 transitions. [2021-10-08 16:17:55,059 INFO L78 Accepts]: Start accepts. Automaton has 60631 states and 299735 transitions. Word has length 23 [2021-10-08 16:17:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:55,061 INFO L470 AbstractCegarLoop]: Abstraction has 60631 states and 299735 transitions. [2021-10-08 16:17:55,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:55,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60631 states and 299735 transitions. [2021-10-08 16:17:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:17:55,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:55,075 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:17:55,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:55,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:55,291 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-08 16:17:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:55,292 INFO L82 PathProgramCache]: Analyzing trace with hash -462158697, now seen corresponding path program 6 times [2021-10-08 16:17:55,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:55,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397576347] [2021-10-08 16:17:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:55,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:56,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:56,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397576347] [2021-10-08 16:17:56,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397576347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:56,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610973870] [2021-10-08 16:17:56,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:17:56,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:56,274 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:56,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 16:17:57,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:17:57,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:57,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:17:57,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:57,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:17:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:17:57,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610973870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:57,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:57,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 20 [2021-10-08 16:17:57,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161225836] [2021-10-08 16:17:57,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:17:57,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:17:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:17:57,947 INFO L87 Difference]: Start difference. First operand 60631 states and 299735 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:02,442 INFO L93 Difference]: Finished difference Result 140426 states and 649524 transitions. [2021-10-08 16:18:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:18:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:05,108 INFO L225 Difference]: With dead ends: 140426 [2021-10-08 16:18:05,109 INFO L226 Difference]: Without dead ends: 140352 [2021-10-08 16:18:05,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2224.5ms TimeCoverageRelationStatistics Valid=289, Invalid=2363, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:18:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140352 states.