/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:20:57,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:20:57,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:20:57,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:20:57,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:20:57,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:20:57,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:20:57,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:20:57,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:20:57,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:20:57,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:20:57,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:20:57,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:20:57,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:20:57,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:20:57,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:20:57,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:20:57,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:20:57,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:20:57,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:20:57,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:20:57,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:20:57,336 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:20:57,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:20:57,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:20:57,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:20:57,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:20:57,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:20:57,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:20:57,339 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:20:57,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:20:57,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:20:57,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:20:57,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:20:57,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:20:57,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:20:57,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:57,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:20:57,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:20:57,341 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:20:57,341 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:20:57,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:20:57,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:20:57,342 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:20:57,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:20:57,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:20:57,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:20:57,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:20:57,842 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:20:57,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2021-10-07 15:20:57,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d5b1bcf/ac77200fb32048909dc80fceaae4d3af/FLAG91924c2e7 [2021-10-07 15:20:58,585 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:20:58,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2021-10-07 15:20:58,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d5b1bcf/ac77200fb32048909dc80fceaae4d3af/FLAG91924c2e7 [2021-10-07 15:20:58,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d5b1bcf/ac77200fb32048909dc80fceaae4d3af [2021-10-07 15:20:58,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:20:58,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:20:58,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:58,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:20:58,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:20:58,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55348132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:58, skipping insertion in model container [2021-10-07 15:20:58,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:20:58,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,264 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/bench-exp3x3-opt.wvr.c[3498,3511] [2021-10-07 15:20:59,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,285 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:20:59,350 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/bench-exp3x3-opt.wvr.c[3498,3511] [2021-10-07 15:20:59,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,383 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:20:59,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59 WrapperNode [2021-10-07 15:20:59,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:20:59,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:20:59,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:20:59,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:20:59,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:20:59,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:20:59,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:20:59,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:59,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:59,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:20:59,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:20:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:20:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:20:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:20:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:20:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:20:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:20:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:20:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:20:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:20:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 15:20:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-10-07 15:20:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-10-07 15:20:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:20:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:20:59,606 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:21:00,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:21:00,571 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-07 15:21:00,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00 BoogieIcfgContainer [2021-10-07 15:21:00,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:21:00,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:21:00,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:21:00,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:21:00,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:58" (1/3) ... [2021-10-07 15:21:00,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae5685f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (2/3) ... [2021-10-07 15:21:00,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae5685f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00" (3/3) ... [2021-10-07 15:21:00,583 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2021-10-07 15:21:00,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:21:00,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-07 15:21:00,592 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:21:00,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,643 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,647 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,647 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,647 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,650 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,650 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,652 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,653 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,653 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,653 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,653 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,653 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,654 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,654 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,654 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,657 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,657 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,657 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,657 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,658 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,658 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,658 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,658 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,659 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,660 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,660 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,660 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,660 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,660 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,661 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,661 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,664 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,665 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,667 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,668 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,668 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,668 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,668 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,670 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,671 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,671 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,671 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,671 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,674 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,675 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,678 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,678 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,679 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,679 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,679 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,682 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,683 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,683 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,683 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,683 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,698 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-10-07 15:21:00,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:21:00,762 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:21:00,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-07 15:21:00,783 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:21:00,795 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 201 transitions, 450 flow [2021-10-07 15:21:00,798 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 201 transitions, 450 flow [2021-10-07 15:21:00,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 201 transitions, 450 flow [2021-10-07 15:21:00,904 INFO L129 PetriNetUnfolder]: 14/195 cut-off events. [2021-10-07 15:21:00,904 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-07 15:21:00,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 195 events. 14/195 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2021-10-07 15:21:00,923 INFO L116 LiptonReduction]: Number of co-enabled transitions 5520 [2021-10-07 15:21:24,406 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2021-10-07 15:21:31,959 WARN L207 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2021-10-07 15:21:34,305 INFO L131 LiptonReduction]: Checked pairs total: 6647 [2021-10-07 15:21:34,305 INFO L133 LiptonReduction]: Total number of compositions: 199 [2021-10-07 15:21:34,316 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 69 transitions, 186 flow [2021-10-07 15:21:34,395 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:21:34,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:34,408 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:21:34,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:21:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash 837, now seen corresponding path program 1 times [2021-10-07 15:21:34,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:34,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652046120] [2021-10-07 15:21:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:34,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:34,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:34,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:21:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:34,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:21:34,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:34,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652046120] [2021-10-07 15:21:34,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652046120] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:34,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:34,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:21:34,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708821015] [2021-10-07 15:21:34,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:21:34,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:21:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:21:34,547 INFO L87 Difference]: Start difference. First operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:34,613 INFO L93 Difference]: Finished difference Result 756 states and 4292 transitions. [2021-10-07 15:21:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:21:34,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-10-07 15:21:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:34,652 INFO L225 Difference]: With dead ends: 756 [2021-10-07 15:21:34,653 INFO L226 Difference]: Without dead ends: 756 [2021-10-07 15:21:34,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:21:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-07 15:21:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-10-07 15:21:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 733 states have (on average 5.855388813096862) internal successors, (4292), 755 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 4292 transitions. [2021-10-07 15:21:34,777 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 4292 transitions. Word has length 1 [2021-10-07 15:21:34,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:34,778 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 4292 transitions. [2021-10-07 15:21:34,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 4292 transitions. [2021-10-07 15:21:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:34,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:34,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:34,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:34,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:21:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash 825420, now seen corresponding path program 1 times [2021-10-07 15:21:34,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:34,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748829834] [2021-10-07 15:21:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:34,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:34,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:34,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:21:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:35,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:35,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:36,111 INFO L354 Elim1Store]: treesize reduction 516, result has 10.3 percent of original size [2021-10-07 15:21:36,113 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 104 treesize of output 140 [2021-10-07 15:21:36,142 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-07 15:21:36,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 735 treesize of output 693 [2021-10-07 15:21:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:39,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:39,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:39,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748829834] [2021-10-07 15:21:39,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748829834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:39,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:39,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:39,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125772511] [2021-10-07 15:21:39,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:39,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:39,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:39,437 INFO L87 Difference]: Start difference. First operand 756 states and 4292 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:39,786 INFO L93 Difference]: Finished difference Result 722 states and 4096 transitions. [2021-10-07 15:21:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:21:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:39,798 INFO L225 Difference]: With dead ends: 722 [2021-10-07 15:21:39,799 INFO L226 Difference]: Without dead ends: 722 [2021-10-07 15:21:39,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-07 15:21:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-10-07 15:21:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 701 states have (on average 5.843081312410842) internal successors, (4096), 721 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 4096 transitions. [2021-10-07 15:21:39,841 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 4096 transitions. Word has length 3 [2021-10-07 15:21:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:39,843 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 4096 transitions. [2021-10-07 15:21:39,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 4096 transitions. [2021-10-07 15:21:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:39,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:39,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:39,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:40,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,058 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:21:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 825421, now seen corresponding path program 1 times [2021-10-07 15:21:40,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:40,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271572869] [2021-10-07 15:21:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:40,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:40,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:40,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:21:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:40,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:40,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:40,692 INFO L354 Elim1Store]: treesize reduction 706, result has 11.0 percent of original size [2021-10-07 15:21:40,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 14 case distinctions, treesize of input 280 treesize of output 335 [2021-10-07 15:22:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:00,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:00,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:00,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271572869] [2021-10-07 15:22:00,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271572869] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:00,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:00,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000817303] [2021-10-07 15:22:00,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:00,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:00,147 INFO L87 Difference]: Start difference. First operand 722 states and 4096 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:00,442 INFO L93 Difference]: Finished difference Result 688 states and 3900 transitions. [2021-10-07 15:22:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:00,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:22:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:00,453 INFO L225 Difference]: With dead ends: 688 [2021-10-07 15:22:00,453 INFO L226 Difference]: Without dead ends: 688 [2021-10-07 15:22:00,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-10-07 15:22:00,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2021-10-07 15:22:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 5.829596412556054) internal successors, (3900), 687 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 3900 transitions. [2021-10-07 15:22:00,495 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 3900 transitions. Word has length 3 [2021-10-07 15:22:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:00,495 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 3900 transitions. [2021-10-07 15:22:00,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 3900 transitions. [2021-10-07 15:22:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:22:00,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:00,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:22:00,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-07 15:22:00,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:00,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:00,711 INFO L82 PathProgramCache]: Analyzing trace with hash 793246996, now seen corresponding path program 1 times [2021-10-07 15:22:00,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:00,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526138952] [2021-10-07 15:22:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:00,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:00,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:00,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:22:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:22:00,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:01,315 INFO L354 Elim1Store]: treesize reduction 510, result has 11.3 percent of original size [2021-10-07 15:22:01,319 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 80 treesize of output 122 [2021-10-07 15:22:01,336 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:22:01,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1000 treesize of output 934 [2021-10-07 15:22:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:04,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:04,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:04,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526138952] [2021-10-07 15:22:04,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526138952] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:04,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:04,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:04,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380295920] [2021-10-07 15:22:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:04,282 INFO L87 Difference]: Start difference. First operand 688 states and 3900 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:04,569 INFO L93 Difference]: Finished difference Result 668 states and 3808 transitions. [2021-10-07 15:22:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:04,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:22:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:04,588 INFO L225 Difference]: With dead ends: 668 [2021-10-07 15:22:04,588 INFO L226 Difference]: Without dead ends: 668 [2021-10-07 15:22:04,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-07 15:22:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2021-10-07 15:22:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 651 states have (on average 5.849462365591398) internal successors, (3808), 667 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 3808 transitions. [2021-10-07 15:22:04,661 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 3808 transitions. Word has length 5 [2021-10-07 15:22:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:04,671 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 3808 transitions. [2021-10-07 15:22:04,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 3808 transitions. [2021-10-07 15:22:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:22:04,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:04,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:22:04,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:04,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:04,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash 793246995, now seen corresponding path program 1 times [2021-10-07 15:22:04,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:04,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658307398] [2021-10-07 15:22:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:04,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:04,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:04,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:04,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:22:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:04,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:22:04,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:05,392 INFO L354 Elim1Store]: treesize reduction 690, result has 11.2 percent of original size [2021-10-07 15:22:05,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 262 treesize of output 317 [2021-10-07 15:22:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:28,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:28,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:28,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658307398] [2021-10-07 15:22:28,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658307398] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:28,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:28,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:28,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456777802] [2021-10-07 15:22:28,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:28,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:28,466 INFO L87 Difference]: Start difference. First operand 668 states and 3808 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:28,695 INFO L93 Difference]: Finished difference Result 648 states and 3716 transitions. [2021-10-07 15:22:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:22:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:28,705 INFO L225 Difference]: With dead ends: 648 [2021-10-07 15:22:28,706 INFO L226 Difference]: Without dead ends: 648 [2021-10-07 15:22:28,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:28,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-10-07 15:22:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2021-10-07 15:22:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 633 states have (on average 5.8704581358609795) internal successors, (3716), 647 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 3716 transitions. [2021-10-07 15:22:28,763 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 3716 transitions. Word has length 5 [2021-10-07 15:22:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:28,764 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 3716 transitions. [2021-10-07 15:22:28,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 3716 transitions. [2021-10-07 15:22:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:22:28,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:28,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:28,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:28,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:28,984 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:28,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2101171934, now seen corresponding path program 1 times [2021-10-07 15:22:28,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:28,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616017660] [2021-10-07 15:22:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:28,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:28,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:28,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:28,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:22:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:29,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:22:29,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:29,482 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-07 15:22:29,482 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 55 treesize of output 103 [2021-10-07 15:22:29,487 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 352 treesize of output 336 [2021-10-07 15:22:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:33,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:33,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:33,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616017660] [2021-10-07 15:22:33,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616017660] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:33,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:33,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:33,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647807864] [2021-10-07 15:22:33,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:33,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:33,920 INFO L87 Difference]: Start difference. First operand 648 states and 3716 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:34,024 INFO L93 Difference]: Finished difference Result 632 states and 3652 transitions. [2021-10-07 15:22:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:22:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:34,034 INFO L225 Difference]: With dead ends: 632 [2021-10-07 15:22:34,034 INFO L226 Difference]: Without dead ends: 632 [2021-10-07 15:22:34,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-07 15:22:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-10-07 15:22:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 619 states have (on average 5.89983844911147) internal successors, (3652), 631 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 3652 transitions. [2021-10-07 15:22:34,069 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 3652 transitions. Word has length 7 [2021-10-07 15:22:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:34,070 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 3652 transitions. [2021-10-07 15:22:34,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 3652 transitions. [2021-10-07 15:22:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:22:34,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:34,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:34,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:34,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:34,285 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:34,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2101171936, now seen corresponding path program 1 times [2021-10-07 15:22:34,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:34,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659234088] [2021-10-07 15:22:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:34,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:34,290 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:34,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:22:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:34,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:22:34,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:34,889 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-07 15:22:34,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 324 treesize of output 369 [2021-10-07 15:22:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:52,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:52,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:52,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659234088] [2021-10-07 15:22:52,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659234088] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:52,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:52,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:52,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006325980] [2021-10-07 15:22:52,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:52,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:52,765 INFO L87 Difference]: Start difference. First operand 632 states and 3652 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:52,868 INFO L93 Difference]: Finished difference Result 616 states and 3588 transitions. [2021-10-07 15:22:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:52,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:22:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:52,879 INFO L225 Difference]: With dead ends: 616 [2021-10-07 15:22:52,879 INFO L226 Difference]: Without dead ends: 616 [2021-10-07 15:22:52,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-07 15:22:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-10-07 15:22:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 605 states have (on average 5.9305785123966945) internal successors, (3588), 615 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 3588 transitions. [2021-10-07 15:22:52,911 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 3588 transitions. Word has length 7 [2021-10-07 15:22:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:52,911 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 3588 transitions. [2021-10-07 15:22:52,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 3588 transitions. [2021-10-07 15:22:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:22:52,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:52,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:52,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:53,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,127 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash 591619807, now seen corresponding path program 1 times [2021-10-07 15:22:53,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:53,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117713635] [2021-10-07 15:22:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:53,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:53,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:53,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:22:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:53,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:22:53,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:53,674 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-07 15:22:53,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-07 15:22:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:54,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:54,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:54,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117713635] [2021-10-07 15:22:54,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117713635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:54,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:54,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:22:54,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130554428] [2021-10-07 15:22:54,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:22:54,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:54,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:22:54,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:54,659 INFO L87 Difference]: Start difference. First operand 616 states and 3588 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:54,719 INFO L93 Difference]: Finished difference Result 596 states and 3496 transitions. [2021-10-07 15:22:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:22:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:54,728 INFO L225 Difference]: With dead ends: 596 [2021-10-07 15:22:54,729 INFO L226 Difference]: Without dead ends: 596 [2021-10-07 15:22:54,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-07 15:22:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-10-07 15:22:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 5.955706984667803) internal successors, (3496), 595 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 3496 transitions. [2021-10-07 15:22:54,758 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 3496 transitions. Word has length 9 [2021-10-07 15:22:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:54,758 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 3496 transitions. [2021-10-07 15:22:54,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 3496 transitions. [2021-10-07 15:22:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:22:54,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:54,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:54,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:54,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:54,969 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:54,970 INFO L82 PathProgramCache]: Analyzing trace with hash 591619809, now seen corresponding path program 1 times [2021-10-07 15:22:54,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:54,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899704539] [2021-10-07 15:22:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:54,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:54,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:54,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:22:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:22:55,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:55,583 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-07 15:22:55,584 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 82 [2021-10-07 15:22:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:55,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899704539] [2021-10-07 15:22:55,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899704539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:55,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:55,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:55,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924279572] [2021-10-07 15:22:55,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:55,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:55,825 INFO L87 Difference]: Start difference. First operand 596 states and 3496 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:55,881 INFO L93 Difference]: Finished difference Result 576 states and 3404 transitions. [2021-10-07 15:22:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:22:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:55,891 INFO L225 Difference]: With dead ends: 576 [2021-10-07 15:22:55,891 INFO L226 Difference]: Without dead ends: 576 [2021-10-07 15:22:55,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-07 15:22:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-10-07 15:22:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 569 states have (on average 5.982425307557118) internal successors, (3404), 575 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 3404 transitions. [2021-10-07 15:22:55,919 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 3404 transitions. Word has length 9 [2021-10-07 15:22:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:55,920 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 3404 transitions. [2021-10-07 15:22:55,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 3404 transitions. [2021-10-07 15:22:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:22:55,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:55,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:55,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:56,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:56,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1610971694, now seen corresponding path program 1 times [2021-10-07 15:22:56,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:56,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044626427] [2021-10-07 15:22:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:56,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:56,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:56,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:56,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:22:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:22:56,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:56,654 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-07 15:22:56,654 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 82 [2021-10-07 15:22:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:56,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:56,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:56,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044626427] [2021-10-07 15:22:56,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044626427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:56,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:56,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:22:56,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062856902] [2021-10-07 15:22:56,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:56,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:56,922 INFO L87 Difference]: Start difference. First operand 576 states and 3404 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:56,978 INFO L93 Difference]: Finished difference Result 542 states and 3208 transitions. [2021-10-07 15:22:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:22:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:56,986 INFO L225 Difference]: With dead ends: 542 [2021-10-07 15:22:56,986 INFO L226 Difference]: Without dead ends: 542 [2021-10-07 15:22:56,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-07 15:22:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-10-07 15:22:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 537 states have (on average 5.973929236499069) internal successors, (3208), 541 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 3208 transitions. [2021-10-07 15:22:57,011 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 3208 transitions. Word has length 11 [2021-10-07 15:22:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:57,012 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 3208 transitions. [2021-10-07 15:22:57,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 3208 transitions. [2021-10-07 15:22:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:22:57,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:57,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:57,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:57,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:57,226 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1610971695, now seen corresponding path program 1 times [2021-10-07 15:22:57,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:57,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937241549] [2021-10-07 15:22:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:57,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:57,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:57,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:22:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:57,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:22:57,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:57,755 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-07 15:22:57,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-07 15:22:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:58,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:58,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:58,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937241549] [2021-10-07 15:22:58,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937241549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:58,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:58,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:22:58,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698376175] [2021-10-07 15:22:58,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:22:58,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:22:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:58,830 INFO L87 Difference]: Start difference. First operand 542 states and 3208 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) [2021-10-07 15:22:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:58,881 INFO L93 Difference]: Finished difference Result 508 states and 3012 transitions. [2021-10-07 15:22:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:58,882 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 [2021-10-07 15:22:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:58,889 INFO L225 Difference]: With dead ends: 508 [2021-10-07 15:22:58,889 INFO L226 Difference]: Without dead ends: 508 [2021-10-07 15:22:58,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-07 15:22:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-10-07 15:22:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 5.964356435643564) internal successors, (3012), 507 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 3012 transitions. [2021-10-07 15:22:58,914 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 3012 transitions. Word has length 11 [2021-10-07 15:22:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:58,914 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 3012 transitions. [2021-10-07 15:22:58,914 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) [2021-10-07 15:22:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 3012 transitions. [2021-10-07 15:22:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:22:58,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:58,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:58,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:59,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,131 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1955592727, now seen corresponding path program 1 times [2021-10-07 15:22:59,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:59,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300993061] [2021-10-07 15:22:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:59,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:59,133 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:59,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:22:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:59,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:22:59,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:59,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:59,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:59,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300993061] [2021-10-07 15:22:59,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300993061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:59,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:59,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:22:59,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121336288] [2021-10-07 15:22:59,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:22:59,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:59,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:22:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:59,561 INFO L87 Difference]: Start difference. First operand 508 states and 3012 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:59,611 INFO L93 Difference]: Finished difference Result 444 states and 2564 transitions. [2021-10-07 15:22:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:22:59,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:22:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:59,617 INFO L225 Difference]: With dead ends: 444 [2021-10-07 15:22:59,617 INFO L226 Difference]: Without dead ends: 444 [2021-10-07 15:22:59,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:22:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-07 15:22:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-10-07 15:22:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 5.800904977375565) internal successors, (2564), 443 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 2564 transitions. [2021-10-07 15:22:59,656 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 2564 transitions. Word has length 13 [2021-10-07 15:22:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:59,657 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 2564 transitions. [2021-10-07 15:22:59,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 2564 transitions. [2021-10-07 15:22:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:22:59,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:59,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:59,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:59,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,878 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:22:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:59,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1955592728, now seen corresponding path program 1 times [2021-10-07 15:22:59,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:59,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928352877] [2021-10-07 15:22:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:59,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:59,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:59,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:23:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:00,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:00,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:00,448 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-07 15:23:00,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-07 15:23:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:01,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:01,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:01,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928352877] [2021-10-07 15:23:01,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928352877] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:01,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:01,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-07 15:23:01,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95931292] [2021-10-07 15:23:01,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:23:01,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:23:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:23:01,395 INFO L87 Difference]: Start difference. First operand 444 states and 2564 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:01,499 INFO L93 Difference]: Finished difference Result 380 states and 2116 transitions. [2021-10-07 15:23:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:23:01,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:23:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:01,504 INFO L225 Difference]: With dead ends: 380 [2021-10-07 15:23:01,505 INFO L226 Difference]: Without dead ends: 380 [2021-10-07 15:23:01,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.4ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:23:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-07 15:23:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-10-07 15:23:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 5.58311345646438) internal successors, (2116), 379 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 2116 transitions. [2021-10-07 15:23:01,522 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 2116 transitions. Word has length 13 [2021-10-07 15:23:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:01,522 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 2116 transitions. [2021-10-07 15:23:01,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 2116 transitions. [2021-10-07 15:23:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-07 15:23:01,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:01,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:01,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-07 15:23:01,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:01,740 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:01,741 INFO L82 PathProgramCache]: Analyzing trace with hash -718805086, now seen corresponding path program 1 times [2021-10-07 15:23:01,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:01,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259175719] [2021-10-07 15:23:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:01,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:01,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:01,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:23:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:02,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:02,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:02,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259175719] [2021-10-07 15:23:02,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259175719] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:02,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:02,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:23:02,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562658821] [2021-10-07 15:23:02,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:02,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:02,749 INFO L87 Difference]: Start difference. First operand 380 states and 2116 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:02,801 INFO L93 Difference]: Finished difference Result 1134 states and 6342 transitions. [2021-10-07 15:23:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:02,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 31 [2021-10-07 15:23:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:02,815 INFO L225 Difference]: With dead ends: 1134 [2021-10-07 15:23:02,815 INFO L226 Difference]: Without dead ends: 1108 [2021-10-07 15:23:02,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-07 15:23:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2021-10-07 15:23:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 5.631436314363143) internal successors, (6234), 1107 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 6234 transitions. [2021-10-07 15:23:02,871 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 6234 transitions. Word has length 31 [2021-10-07 15:23:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:02,872 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 6234 transitions. [2021-10-07 15:23:02,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 6234 transitions. [2021-10-07 15:23:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:23:02,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:02,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:02,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:03,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:03,092 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash 643680962, now seen corresponding path program 1 times [2021-10-07 15:23:03,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:03,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886582135] [2021-10-07 15:23:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:03,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:03,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:03,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:23:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:03,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:03,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:03,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:03,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886582135] [2021-10-07 15:23:03,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886582135] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:03,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:03,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:23:03,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676041254] [2021-10-07 15:23:03,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:03,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:03,881 INFO L87 Difference]: Start difference. First operand 1108 states and 6234 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:03,940 INFO L93 Difference]: Finished difference Result 2190 states and 12423 transitions. [2021-10-07 15:23:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2021-10-07 15:23:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:03,977 INFO L225 Difference]: With dead ends: 2190 [2021-10-07 15:23:03,978 INFO L226 Difference]: Without dead ends: 2064 [2021-10-07 15:23:03,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2021-10-07 15:23:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1068. [2021-10-07 15:23:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 5.630740393626992) internal successors, (6008), 1067 states have internal predecessors, (6008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 6008 transitions. [2021-10-07 15:23:04,051 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 6008 transitions. Word has length 33 [2021-10-07 15:23:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 6008 transitions. [2021-10-07 15:23:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 6008 transitions. [2021-10-07 15:23:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:23:04,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:04,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:04,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-07 15:23:04,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:04,278 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:04,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:04,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1636314786, now seen corresponding path program 1 times [2021-10-07 15:23:04,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:04,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209372029] [2021-10-07 15:23:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:04,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:04,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:04,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:23:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:04,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:04,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:05,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:05,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209372029] [2021-10-07 15:23:05,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209372029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:05,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:05,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:23:05,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264565934] [2021-10-07 15:23:05,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:05,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:05,043 INFO L87 Difference]: Start difference. First operand 1068 states and 6008 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:05,148 INFO L93 Difference]: Finished difference Result 3126 states and 17826 transitions. [2021-10-07 15:23:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2021-10-07 15:23:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:05,175 INFO L225 Difference]: With dead ends: 3126 [2021-10-07 15:23:05,175 INFO L226 Difference]: Without dead ends: 3052 [2021-10-07 15:23:05,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-10-07 15:23:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2452. [2021-10-07 15:23:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2451 states have (on average 6.105263157894737) internal successors, (14964), 2451 states have internal predecessors, (14964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 14964 transitions. [2021-10-07 15:23:05,310 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 14964 transitions. Word has length 33 [2021-10-07 15:23:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:05,312 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 14964 transitions. [2021-10-07 15:23:05,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 14964 transitions. [2021-10-07 15:23:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:23:05,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:05,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:05,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:05,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:05,543 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash -813893758, now seen corresponding path program 1 times [2021-10-07 15:23:05,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:05,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653352460] [2021-10-07 15:23:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:05,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:05,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:05,546 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:05,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:23:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:05,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:06,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:06,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:06,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653352460] [2021-10-07 15:23:06,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653352460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:06,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:06,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:23:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055882882] [2021-10-07 15:23:06,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:06,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:06,371 INFO L87 Difference]: Start difference. First operand 2452 states and 14964 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:06,455 INFO L93 Difference]: Finished difference Result 4230 states and 25090 transitions. [2021-10-07 15:23:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2021-10-07 15:23:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:06,488 INFO L225 Difference]: With dead ends: 4230 [2021-10-07 15:23:06,488 INFO L226 Difference]: Without dead ends: 3984 [2021-10-07 15:23:06,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-10-07 15:23:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3612. [2021-10-07 15:23:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 6.1348656881750205) internal successors, (22153), 3611 states have internal predecessors, (22153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 22153 transitions. [2021-10-07 15:23:06,775 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 22153 transitions. Word has length 33 [2021-10-07 15:23:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:06,778 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 22153 transitions. [2021-10-07 15:23:06,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 22153 transitions. [2021-10-07 15:23:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:23:06,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:06,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:06,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:07,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:07,014 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:07,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:07,015 INFO L82 PathProgramCache]: Analyzing trace with hash 332538306, now seen corresponding path program 1 times [2021-10-07 15:23:07,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:07,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199809999] [2021-10-07 15:23:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:07,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:07,018 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:07,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:23:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:23:07,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:07,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:09,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:09,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199809999] [2021-10-07 15:23:09,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199809999] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:09,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:09,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:23:09,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708513046] [2021-10-07 15:23:09,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:09,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:09,864 INFO L87 Difference]: Start difference. First operand 3612 states and 22153 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:10,593 INFO L93 Difference]: Finished difference Result 12293 states and 74453 transitions. [2021-10-07 15:23:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:23:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2021-10-07 15:23:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:10,714 INFO L225 Difference]: With dead ends: 12293 [2021-10-07 15:23:10,714 INFO L226 Difference]: Without dead ends: 12119 [2021-10-07 15:23:10,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 476.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12119 states. [2021-10-07 15:23:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12119 to 7734. [2021-10-07 15:23:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7734 states, 7733 states have (on average 6.5353679037889565) internal successors, (50538), 7733 states have internal predecessors, (50538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 50538 transitions. [2021-10-07 15:23:11,411 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 50538 transitions. Word has length 34 [2021-10-07 15:23:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 7734 states and 50538 transitions. [2021-10-07 15:23:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 50538 transitions. [2021-10-07 15:23:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:23:11,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:11,457 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:11,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:11,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:11,673 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1948407482, now seen corresponding path program 1 times [2021-10-07 15:23:11,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:11,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144521770] [2021-10-07 15:23:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:11,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:11,676 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:11,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:23:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:12,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:12,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:12,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:13,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:13,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144521770] [2021-10-07 15:23:13,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144521770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:13,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:13,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-07 15:23:13,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535533682] [2021-10-07 15:23:13,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:23:13,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:23:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:23:13,475 INFO L87 Difference]: Start difference. First operand 7734 states and 50538 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:13,924 INFO L93 Difference]: Finished difference Result 16452 states and 106552 transitions. [2021-10-07 15:23:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:23:13,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2021-10-07 15:23:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:14,108 INFO L225 Difference]: With dead ends: 16452 [2021-10-07 15:23:14,108 INFO L226 Difference]: Without dead ends: 15576 [2021-10-07 15:23:14,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:23:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15576 states. [2021-10-07 15:23:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15576 to 8394. [2021-10-07 15:23:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8394 states, 8393 states have (on average 6.791373763850828) internal successors, (57000), 8393 states have internal predecessors, (57000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8394 states to 8394 states and 57000 transitions. [2021-10-07 15:23:14,873 INFO L78 Accepts]: Start accepts. Automaton has 8394 states and 57000 transitions. Word has length 34 [2021-10-07 15:23:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:14,873 INFO L470 AbstractCegarLoop]: Abstraction has 8394 states and 57000 transitions. [2021-10-07 15:23:14,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8394 states and 57000 transitions. [2021-10-07 15:23:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:23:14,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:14,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:14,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:15,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:15,138 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1683062176, now seen corresponding path program 1 times [2021-10-07 15:23:15,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:15,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341441797] [2021-10-07 15:23:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:15,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:15,141 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:15,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:23:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:15,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:23:15,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:16,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:20,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:20,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341441797] [2021-10-07 15:23:20,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341441797] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:20,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:20,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:23:20,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223181193] [2021-10-07 15:23:20,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:23:20,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:23:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:20,208 INFO L87 Difference]: Start difference. First operand 8394 states and 57000 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:21,750 INFO L93 Difference]: Finished difference Result 21455 states and 136884 transitions. [2021-10-07 15:23:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:23:21,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2021-10-07 15:23:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:22,044 INFO L225 Difference]: With dead ends: 21455 [2021-10-07 15:23:22,051 INFO L226 Difference]: Without dead ends: 21364 [2021-10-07 15:23:22,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1206.1ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21364 states. [2021-10-07 15:23:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21364 to 12182. [2021-10-07 15:23:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12182 states, 12181 states have (on average 6.9626467449306295) internal successors, (84812), 12181 states have internal predecessors, (84812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12182 states to 12182 states and 84812 transitions. [2021-10-07 15:23:23,106 INFO L78 Accepts]: Start accepts. Automaton has 12182 states and 84812 transitions. Word has length 34 [2021-10-07 15:23:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:23,108 INFO L470 AbstractCegarLoop]: Abstraction has 12182 states and 84812 transitions. [2021-10-07 15:23:23,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12182 states and 84812 transitions. [2021-10-07 15:23:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:23:23,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:23,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:23,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:23,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:23,427 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1390145312, now seen corresponding path program 2 times [2021-10-07 15:23:23,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:23,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149043382] [2021-10-07 15:23:23,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:23,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:23,431 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:23,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:23:24,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:24,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:24,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:23:24,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:24,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:26,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:26,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149043382] [2021-10-07 15:23:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149043382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:26,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:26,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:23:26,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393493368] [2021-10-07 15:23:26,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:26,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:26,941 INFO L87 Difference]: Start difference. First operand 12182 states and 84812 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:28,104 INFO L93 Difference]: Finished difference Result 30415 states and 201822 transitions. [2021-10-07 15:23:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:23:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2021-10-07 15:23:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:28,464 INFO L225 Difference]: With dead ends: 30415 [2021-10-07 15:23:28,464 INFO L226 Difference]: Without dead ends: 30047 [2021-10-07 15:23:28,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 502.7ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30047 states. [2021-10-07 15:23:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30047 to 16488. [2021-10-07 15:23:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16488 states, 16487 states have (on average 7.2882877418572205) internal successors, (120162), 16487 states have internal predecessors, (120162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16488 states to 16488 states and 120162 transitions. [2021-10-07 15:23:29,932 INFO L78 Accepts]: Start accepts. Automaton has 16488 states and 120162 transitions. Word has length 34 [2021-10-07 15:23:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:29,935 INFO L470 AbstractCegarLoop]: Abstraction has 16488 states and 120162 transitions. [2021-10-07 15:23:29,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 16488 states and 120162 transitions. [2021-10-07 15:23:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:23:30,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:30,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:30,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:30,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:30,231 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash 923781372, now seen corresponding path program 1 times [2021-10-07 15:23:30,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:30,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162050290] [2021-10-07 15:23:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:30,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:30,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:30,234 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:30,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:23:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:30,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:23:30,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:31,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:33,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:33,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162050290] [2021-10-07 15:23:33,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162050290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:33,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:33,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:23:33,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673051742] [2021-10-07 15:23:33,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:33,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:33,662 INFO L87 Difference]: Start difference. First operand 16488 states and 120162 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:34,738 INFO L93 Difference]: Finished difference Result 37331 states and 256671 transitions. [2021-10-07 15:23:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:23:34,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2021-10-07 15:23:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:35,249 INFO L225 Difference]: With dead ends: 37331 [2021-10-07 15:23:35,249 INFO L226 Difference]: Without dead ends: 36941 [2021-10-07 15:23:35,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 511.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36941 states. [2021-10-07 15:23:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36941 to 22736. [2021-10-07 15:23:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22736 states, 22735 states have (on average 7.4476358038266985) internal successors, (169322), 22735 states have internal predecessors, (169322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22736 states to 22736 states and 169322 transitions. [2021-10-07 15:23:37,165 INFO L78 Accepts]: Start accepts. Automaton has 22736 states and 169322 transitions. Word has length 34 [2021-10-07 15:23:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:37,166 INFO L470 AbstractCegarLoop]: Abstraction has 22736 states and 169322 transitions. [2021-10-07 15:23:37,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 22736 states and 169322 transitions. [2021-10-07 15:23:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:23:37,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:37,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:37,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:37,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:37,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1335176435, now seen corresponding path program 1 times [2021-10-07 15:23:37,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:37,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739214482] [2021-10-07 15:23:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:37,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:37,485 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:37,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:23:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:38,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:23:38,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:39,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:41,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:41,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739214482] [2021-10-07 15:23:41,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739214482] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:41,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:41,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:23:41,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353843480] [2021-10-07 15:23:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:23:41,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:23:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:41,753 INFO L87 Difference]: Start difference. First operand 22736 states and 169322 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:43,690 INFO L93 Difference]: Finished difference Result 42042 states and 290874 transitions. [2021-10-07 15:23:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:23:43,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:23:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:44,041 INFO L225 Difference]: With dead ends: 42042 [2021-10-07 15:23:44,041 INFO L226 Difference]: Without dead ends: 41836 [2021-10-07 15:23:44,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1018.5ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41836 states. [2021-10-07 15:23:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41836 to 29226. [2021-10-07 15:23:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29226 states, 29225 states have (on average 7.477057313943542) internal successors, (218517), 29225 states have internal predecessors, (218517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29226 states to 29226 states and 218517 transitions. [2021-10-07 15:23:46,078 INFO L78 Accepts]: Start accepts. Automaton has 29226 states and 218517 transitions. Word has length 35 [2021-10-07 15:23:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:46,078 INFO L470 AbstractCegarLoop]: Abstraction has 29226 states and 218517 transitions. [2021-10-07 15:23:46,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29226 states and 218517 transitions. [2021-10-07 15:23:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:23:46,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:46,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:46,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 15:23:46,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:46,408 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:46,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2019490659, now seen corresponding path program 3 times [2021-10-07 15:23:46,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:46,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325277875] [2021-10-07 15:23:46,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:23:46,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:46,411 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:46,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:23:47,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:23:47,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:47,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:47,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:47,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:48,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:48,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325277875] [2021-10-07 15:23:48,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325277875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:48,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:48,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-07 15:23:48,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287948473] [2021-10-07 15:23:48,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:23:48,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:23:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:23:48,797 INFO L87 Difference]: Start difference. First operand 29226 states and 218517 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:50,322 INFO L93 Difference]: Finished difference Result 68168 states and 492077 transitions. [2021-10-07 15:23:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:23:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2021-10-07 15:23:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:50,908 INFO L225 Difference]: With dead ends: 68168 [2021-10-07 15:23:50,908 INFO L226 Difference]: Without dead ends: 58478 [2021-10-07 15:23:50,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:23:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58478 states. [2021-10-07 15:23:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58478 to 32736. [2021-10-07 15:23:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32736 states, 32735 states have (on average 7.479059111043226) internal successors, (244827), 32735 states have internal predecessors, (244827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32736 states to 32736 states and 244827 transitions. [2021-10-07 15:23:53,619 INFO L78 Accepts]: Start accepts. Automaton has 32736 states and 244827 transitions. Word has length 35 [2021-10-07 15:23:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:53,620 INFO L470 AbstractCegarLoop]: Abstraction has 32736 states and 244827 transitions. [2021-10-07 15:23:53,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32736 states and 244827 transitions. [2021-10-07 15:23:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:23:54,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:54,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:54,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:54,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:54,483 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1632511000, now seen corresponding path program 2 times [2021-10-07 15:23:54,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:54,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85715755] [2021-10-07 15:23:54,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:54,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:54,486 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:54,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:23:55,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:55,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:55,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:23:55,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:56,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:57,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:57,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85715755] [2021-10-07 15:23:57,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85715755] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:57,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:57,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:23:57,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556227105] [2021-10-07 15:23:57,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:23:57,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:23:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:57,729 INFO L87 Difference]: Start difference. First operand 32736 states and 244827 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:59,683 INFO L93 Difference]: Finished difference Result 61193 states and 432198 transitions. [2021-10-07 15:23:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:23:59,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:23:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:00,295 INFO L225 Difference]: With dead ends: 61193 [2021-10-07 15:24:00,295 INFO L226 Difference]: Without dead ends: 60708 [2021-10-07 15:24:00,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 567.5ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60708 states. [2021-10-07 15:24:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60708 to 40600. [2021-10-07 15:24:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40600 states, 40599 states have (on average 7.520801004950861) internal successors, (305337), 40599 states have internal predecessors, (305337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40600 states to 40600 states and 305337 transitions. [2021-10-07 15:24:03,123 INFO L78 Accepts]: Start accepts. Automaton has 40600 states and 305337 transitions. Word has length 35 [2021-10-07 15:24:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:03,123 INFO L470 AbstractCegarLoop]: Abstraction has 40600 states and 305337 transitions. [2021-10-07 15:24:03,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 40600 states and 305337 transitions. [2021-10-07 15:24:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:24:03,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:03,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:03,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:04,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:04,109 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash -837001217, now seen corresponding path program 1 times [2021-10-07 15:24:04,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:04,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768642137] [2021-10-07 15:24:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:04,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:04,112 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:04,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:24:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:04,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:24:04,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:05,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:05,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:05,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768642137] [2021-10-07 15:24:05,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768642137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:05,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:05,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:24:05,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236178652] [2021-10-07 15:24:05,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:05,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:05,303 INFO L87 Difference]: Start difference. First operand 40600 states and 305337 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:07,203 INFO L93 Difference]: Finished difference Result 71134 states and 520451 transitions. [2021-10-07 15:24:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:24:07,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 35 [2021-10-07 15:24:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:07,933 INFO L225 Difference]: With dead ends: 71134 [2021-10-07 15:24:07,934 INFO L226 Difference]: Without dead ends: 65846 [2021-10-07 15:24:07,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65846 states. [2021-10-07 15:24:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65846 to 44890. [2021-10-07 15:24:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44890 states, 44889 states have (on average 7.515092784423801) internal successors, (337345), 44889 states have internal predecessors, (337345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44890 states to 44890 states and 337345 transitions. [2021-10-07 15:24:11,372 INFO L78 Accepts]: Start accepts. Automaton has 44890 states and 337345 transitions. Word has length 35 [2021-10-07 15:24:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:11,372 INFO L470 AbstractCegarLoop]: Abstraction has 44890 states and 337345 transitions. [2021-10-07 15:24:11,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 44890 states and 337345 transitions. [2021-10-07 15:24:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:24:12,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:12,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:12,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:12,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:12,411 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1681473088, now seen corresponding path program 1 times [2021-10-07 15:24:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:12,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680060755] [2021-10-07 15:24:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:12,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:12,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:12,414 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:12,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:24:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:24:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:13,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:13,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:13,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680060755] [2021-10-07 15:24:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680060755] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:13,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:13,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:24:13,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272164781] [2021-10-07 15:24:13,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:13,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:13,541 INFO L87 Difference]: Start difference. First operand 44890 states and 337345 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:15,477 INFO L93 Difference]: Finished difference Result 76319 states and 561226 transitions. [2021-10-07 15:24:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:24:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 35 [2021-10-07 15:24:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:16,305 INFO L225 Difference]: With dead ends: 76319 [2021-10-07 15:24:16,305 INFO L226 Difference]: Without dead ends: 70922 [2021-10-07 15:24:16,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70922 states. [2021-10-07 15:24:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70922 to 55052. [2021-10-07 15:24:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55052 states, 55051 states have (on average 7.631632486240032) internal successors, (420129), 55051 states have internal predecessors, (420129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55052 states to 55052 states and 420129 transitions. [2021-10-07 15:24:20,638 INFO L78 Accepts]: Start accepts. Automaton has 55052 states and 420129 transitions. Word has length 35 [2021-10-07 15:24:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:20,638 INFO L470 AbstractCegarLoop]: Abstraction has 55052 states and 420129 transitions. [2021-10-07 15:24:20,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 55052 states and 420129 transitions. [2021-10-07 15:24:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:24:20,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:20,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:20,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:21,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:21,116 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash -894601097, now seen corresponding path program 1 times [2021-10-07 15:24:21,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:21,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184810662] [2021-10-07 15:24:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:21,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:21,121 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:21,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:24:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:21,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:24:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:24:22,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:24:22,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:22,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184810662] [2021-10-07 15:24:22,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184810662] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:22,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:22,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:24:22,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760473726] [2021-10-07 15:24:22,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:22,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:22,766 INFO L87 Difference]: Start difference. First operand 55052 states and 420129 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:24,331 INFO L93 Difference]: Finished difference Result 72051 states and 538320 transitions. [2021-10-07 15:24:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:24:24,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 35 [2021-10-07 15:24:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:25,491 INFO L225 Difference]: With dead ends: 72051 [2021-10-07 15:24:25,492 INFO L226 Difference]: Without dead ends: 70104 [2021-10-07 15:24:25,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70104 states. [2021-10-07 15:24:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70104 to 58716. [2021-10-07 15:24:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58716 states, 58715 states have (on average 7.633466746146641) internal successors, (448199), 58715 states have internal predecessors, (448199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58716 states to 58716 states and 448199 transitions. [2021-10-07 15:24:30,986 INFO L78 Accepts]: Start accepts. Automaton has 58716 states and 448199 transitions. Word has length 35 [2021-10-07 15:24:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 58716 states and 448199 transitions. [2021-10-07 15:24:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 58716 states and 448199 transitions. [2021-10-07 15:24:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:24:31,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:31,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:31,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:31,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:31,975 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:31,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1566849113, now seen corresponding path program 2 times [2021-10-07 15:24:31,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:31,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380960020] [2021-10-07 15:24:31,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:31,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:31,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:31,979 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:31,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:24:33,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:33,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:33,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:24:33,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:24:33,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:24:33,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:33,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380960020] [2021-10-07 15:24:33,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380960020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:33,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:33,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:24:33,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948870077] [2021-10-07 15:24:33,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:33,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:33,407 INFO L87 Difference]: Start difference. First operand 58716 states and 448199 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:35,682 INFO L93 Difference]: Finished difference Result 95017 states and 709692 transitions. [2021-10-07 15:24:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:24:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:24:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:36,691 INFO L225 Difference]: With dead ends: 95017 [2021-10-07 15:24:36,691 INFO L226 Difference]: Without dead ends: 92126 [2021-10-07 15:24:36,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92126 states. [2021-10-07 15:24:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92126 to 73216. [2021-10-07 15:24:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73216 states, 73215 states have (on average 7.78500307314075) internal successors, (569979), 73215 states have internal predecessors, (569979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73216 states to 73216 states and 569979 transitions. [2021-10-07 15:24:42,699 INFO L78 Accepts]: Start accepts. Automaton has 73216 states and 569979 transitions. Word has length 35 [2021-10-07 15:24:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:42,700 INFO L470 AbstractCegarLoop]: Abstraction has 73216 states and 569979 transitions. [2021-10-07 15:24:42,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 73216 states and 569979 transitions. [2021-10-07 15:24:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:24:43,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:43,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:43,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:43,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:43,843 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1201319827, now seen corresponding path program 1 times [2021-10-07 15:24:43,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:43,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439693706] [2021-10-07 15:24:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:43,845 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:43,846 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:43,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:24:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:44,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:24:44,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:45,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:24:48,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:48,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439693706] [2021-10-07 15:24:48,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439693706] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:48,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:48,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:24:48,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957660545] [2021-10-07 15:24:48,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:24:48,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:24:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:24:48,476 INFO L87 Difference]: Start difference. First operand 73216 states and 569979 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:52,827 INFO L93 Difference]: Finished difference Result 133655 states and 983358 transitions. [2021-10-07 15:24:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:24:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:24:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:54,917 INFO L225 Difference]: With dead ends: 133655 [2021-10-07 15:24:54,917 INFO L226 Difference]: Without dead ends: 133060 [2021-10-07 15:24:54,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1122.8ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:24:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133060 states. [2021-10-07 15:25:00,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133060 to 91876. [2021-10-07 15:25:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91876 states, 91875 states have (on average 7.867493877551021) internal successors, (722826), 91875 states have internal predecessors, (722826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91876 states to 91876 states and 722826 transitions. [2021-10-07 15:25:02,926 INFO L78 Accepts]: Start accepts. Automaton has 91876 states and 722826 transitions. Word has length 35 [2021-10-07 15:25:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:02,926 INFO L470 AbstractCegarLoop]: Abstraction has 91876 states and 722826 transitions. [2021-10-07 15:25:02,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 91876 states and 722826 transitions. [2021-10-07 15:25:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:25:04,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:04,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:04,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:04,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:04,292 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:25:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1095669480, now seen corresponding path program 2 times [2021-10-07 15:25:04,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:04,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489317266] [2021-10-07 15:25:04,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:25:04,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:04,297 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:04,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:25:05,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:25:05,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:05,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:25:05,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:06,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:13,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:13,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489317266] [2021-10-07 15:25:13,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489317266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:13,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:13,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:13,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202349806] [2021-10-07 15:25:13,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:13,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:13,985 INFO L87 Difference]: Start difference. First operand 91876 states and 722826 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:18,507 INFO L93 Difference]: Finished difference Result 119872 states and 905839 transitions. [2021-10-07 15:25:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:25:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:25:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:20,502 INFO L225 Difference]: With dead ends: 119872 [2021-10-07 15:25:20,502 INFO L226 Difference]: Without dead ends: 119820 [2021-10-07 15:25:20,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1997.8ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:25:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119820 states. [2021-10-07 15:25:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119820 to 96000. [2021-10-07 15:25:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96000 states, 95999 states have (on average 7.867311117824144) internal successors, (755254), 95999 states have internal predecessors, (755254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96000 states to 96000 states and 755254 transitions. [2021-10-07 15:25:30,041 INFO L78 Accepts]: Start accepts. Automaton has 96000 states and 755254 transitions. Word has length 35 [2021-10-07 15:25:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:30,041 INFO L470 AbstractCegarLoop]: Abstraction has 96000 states and 755254 transitions. [2021-10-07 15:25:30,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 96000 states and 755254 transitions. [2021-10-07 15:25:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:25:31,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:31,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:31,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-07 15:25:32,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:32,112 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:25:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1632039721, now seen corresponding path program 2 times [2021-10-07 15:25:32,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:32,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556609339] [2021-10-07 15:25:32,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:25:32,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:32,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:32,115 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:32,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:25:33,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:25:33,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:33,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:25:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:34,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:38,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:38,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556609339] [2021-10-07 15:25:38,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556609339] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:38,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:38,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:25:38,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636117803] [2021-10-07 15:25:38,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:25:38,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:25:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:25:38,159 INFO L87 Difference]: Start difference. First operand 96000 states and 755254 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:42,956 INFO L93 Difference]: Finished difference Result 157119 states and 1178154 transitions. [2021-10-07 15:25:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:25:42,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:25:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:45,466 INFO L225 Difference]: With dead ends: 157119 [2021-10-07 15:25:45,466 INFO L226 Difference]: Without dead ends: 156661 [2021-10-07 15:25:45,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1260.9ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:25:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156661 states. [2021-10-07 15:25:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156661 to 106566. [2021-10-07 15:25:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106566 states, 106565 states have (on average 7.921334396846995) internal successors, (844137), 106565 states have internal predecessors, (844137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106566 states to 106566 states and 844137 transitions. [2021-10-07 15:25:56,379 INFO L78 Accepts]: Start accepts. Automaton has 106566 states and 844137 transitions. Word has length 35 [2021-10-07 15:25:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 106566 states and 844137 transitions. [2021-10-07 15:25:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 106566 states and 844137 transitions. [2021-10-07 15:25:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:25:57,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:57,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:57,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:57,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:57,371 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:25:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1582779885, now seen corresponding path program 3 times [2021-10-07 15:25:57,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:57,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630685307] [2021-10-07 15:25:57,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:25:57,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:57,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:57,373 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:57,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:25:58,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:25:58,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:58,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:25:58,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:59,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:26:03,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:03,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630685307] [2021-10-07 15:26:03,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630685307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:03,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:03,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:26:03,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353865191] [2021-10-07 15:26:03,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:26:03,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:26:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:26:03,265 INFO L87 Difference]: Start difference. First operand 106566 states and 844137 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:08,771 INFO L93 Difference]: Finished difference Result 194416 states and 1465169 transitions. [2021-10-07 15:26:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:26:08,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-07 15:26:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:13,840 INFO L225 Difference]: With dead ends: 194416 [2021-10-07 15:26:13,840 INFO L226 Difference]: Without dead ends: 194292 [2021-10-07 15:26:13,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 904.9ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:26:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194292 states. [2021-10-07 15:26:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194292 to 129226. [2021-10-07 15:26:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129226 states, 129225 states have (on average 7.952099052041014) internal successors, (1027610), 129225 states have internal predecessors, (1027610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129226 states to 129226 states and 1027610 transitions. [2021-10-07 15:26:30,117 INFO L78 Accepts]: Start accepts. Automaton has 129226 states and 1027610 transitions. Word has length 35 [2021-10-07 15:26:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:30,117 INFO L470 AbstractCegarLoop]: Abstraction has 129226 states and 1027610 transitions. [2021-10-07 15:26:30,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 129226 states and 1027610 transitions. [2021-10-07 15:26:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:26:30,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:30,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:30,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-07 15:26:31,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:31,100 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:26:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash -141108584, now seen corresponding path program 3 times [2021-10-07 15:26:31,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:31,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050870057] [2021-10-07 15:26:31,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:26:31,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:31,104 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:31,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:26:33,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:26:33,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:33,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:26:33,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:26:33,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:26:35,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:35,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050870057] [2021-10-07 15:26:35,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050870057] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:35,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:26:35,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229663474] [2021-10-07 15:26:35,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:26:35,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:26:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:26:35,116 INFO L87 Difference]: Start difference. First operand 129226 states and 1027610 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:39,974 INFO L93 Difference]: Finished difference Result 180763 states and 1383691 transitions. [2021-10-07 15:26:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:26:39,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-07 15:26:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:43,020 INFO L225 Difference]: With dead ends: 180763 [2021-10-07 15:26:43,020 INFO L226 Difference]: Without dead ends: 179977 [2021-10-07 15:26:43,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 386.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:26:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179977 states. [2021-10-07 15:26:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179977 to 137798. [2021-10-07 15:26:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137798 states, 137797 states have (on average 7.993722649985123) internal successors, (1101511), 137797 states have internal predecessors, (1101511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137798 states to 137798 states and 1101511 transitions. [2021-10-07 15:26:56,282 INFO L78 Accepts]: Start accepts. Automaton has 137798 states and 1101511 transitions. Word has length 36 [2021-10-07 15:26:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:56,282 INFO L470 AbstractCegarLoop]: Abstraction has 137798 states and 1101511 transitions. [2021-10-07 15:26:56,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 137798 states and 1101511 transitions. [2021-10-07 15:26:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:26:58,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:58,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:58,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:58,465 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:26:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1450862110, now seen corresponding path program 1 times [2021-10-07 15:26:58,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:58,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566617469] [2021-10-07 15:26:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:26:58,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:58,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:58,470 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:58,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:26:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:26:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:26:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:02,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:07,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:07,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566617469] [2021-10-07 15:27:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566617469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:07,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:07,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:27:07,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997612261] [2021-10-07 15:27:07,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:07,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:27:07,492 INFO L87 Difference]: Start difference. First operand 137798 states and 1101511 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:13,872 INFO L93 Difference]: Finished difference Result 187484 states and 1428038 transitions. [2021-10-07 15:27:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:27:13,875 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-07 15:27:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:17,540 INFO L225 Difference]: With dead ends: 187484 [2021-10-07 15:27:17,548 INFO L226 Difference]: Without dead ends: 187393 [2021-10-07 15:27:17,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2318.0ms TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:27:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187393 states. [2021-10-07 15:27:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187393 to 145810. [2021-10-07 15:27:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145810 states, 145809 states have (on average 7.992908531023462) internal successors, (1165438), 145809 states have internal predecessors, (1165438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145810 states to 145810 states and 1165438 transitions. [2021-10-07 15:27:32,588 INFO L78 Accepts]: Start accepts. Automaton has 145810 states and 1165438 transitions. Word has length 36 [2021-10-07 15:27:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:32,588 INFO L470 AbstractCegarLoop]: Abstraction has 145810 states and 1165438 transitions. [2021-10-07 15:27:32,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 145810 states and 1165438 transitions. [2021-10-07 15:27:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:27:34,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:34,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:34,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:34,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:27:34,493 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:27:34,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:34,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1096856794, now seen corresponding path program 2 times [2021-10-07 15:27:34,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:34,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764321783] [2021-10-07 15:27:34,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:27:34,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:34,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:34,497 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:27:34,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:27:36,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:27:36,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:36,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:27:36,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:27:36,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:27:37,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:37,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764321783] [2021-10-07 15:27:37,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764321783] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:37,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:37,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:27:37,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385592225] [2021-10-07 15:27:37,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:27:37,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:27:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:27:37,810 INFO L87 Difference]: Start difference. First operand 145810 states and 1165438 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:44,914 INFO L93 Difference]: Finished difference Result 196865 states and 1534406 transitions. [2021-10-07 15:27:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:27:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-07 15:27:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:48,418 INFO L225 Difference]: With dead ends: 196865 [2021-10-07 15:27:48,418 INFO L226 Difference]: Without dead ends: 193168 [2021-10-07 15:27:48,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 366.2ms TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:27:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193168 states. [2021-10-07 15:28:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193168 to 142870. [2021-10-07 15:28:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142870 states, 142869 states have (on average 8.06370871217689) internal successors, (1152054), 142869 states have internal predecessors, (1152054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142870 states to 142870 states and 1152054 transitions. [2021-10-07 15:28:05,966 INFO L78 Accepts]: Start accepts. Automaton has 142870 states and 1152054 transitions. Word has length 36 [2021-10-07 15:28:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:05,967 INFO L470 AbstractCegarLoop]: Abstraction has 142870 states and 1152054 transitions. [2021-10-07 15:28:05,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 142870 states and 1152054 transitions. [2021-10-07 15:28:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:28:08,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:08,173 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:08,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:08,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:08,374 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:28:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1695181280, now seen corresponding path program 4 times [2021-10-07 15:28:08,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:08,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240492690] [2021-10-07 15:28:08,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:28:08,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:08,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:08,380 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:08,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:28:09,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:28:09,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:09,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:28:09,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:11,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:15,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:15,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240492690] [2021-10-07 15:28:15,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240492690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:15,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:28:15,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594388527] [2021-10-07 15:28:15,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:28:15,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:28:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:28:15,832 INFO L87 Difference]: Start difference. First operand 142870 states and 1152054 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:23,198 INFO L93 Difference]: Finished difference Result 214781 states and 1649083 transitions. [2021-10-07 15:28:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:28:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-07 15:28:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:27,481 INFO L225 Difference]: With dead ends: 214781 [2021-10-07 15:28:27,484 INFO L226 Difference]: Without dead ends: 214308 [2021-10-07 15:28:27,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2055.1ms TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:28:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214308 states. [2021-10-07 15:28:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214308 to 159588. [2021-10-07 15:28:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159588 states, 159587 states have (on average 8.085946850307355) internal successors, (1290412), 159587 states have internal predecessors, (1290412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159588 states to 159588 states and 1290412 transitions. [2021-10-07 15:28:46,917 INFO L78 Accepts]: Start accepts. Automaton has 159588 states and 1290412 transitions. Word has length 36 [2021-10-07 15:28:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:46,917 INFO L470 AbstractCegarLoop]: Abstraction has 159588 states and 1290412 transitions. [2021-10-07 15:28:46,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 159588 states and 1290412 transitions. [2021-10-07 15:28:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:28:49,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:49,498 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:49,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-07 15:28:49,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:49,711 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:28:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 978781991, now seen corresponding path program 3 times [2021-10-07 15:28:49,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:49,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308843508] [2021-10-07 15:28:49,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:28:49,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:49,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:49,730 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:49,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:28:51,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:28:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:51,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:28:51,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:28:52,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:28:55,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:55,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308843508] [2021-10-07 15:28:55,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308843508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:55,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:55,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:28:55,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818214593] [2021-10-07 15:28:55,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:28:55,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:28:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:28:55,920 INFO L87 Difference]: Start difference. First operand 159588 states and 1290412 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:03,859 INFO L93 Difference]: Finished difference Result 264514 states and 2039192 transitions. [2021-10-07 15:29:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:29:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2021-10-07 15:29:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:11,382 INFO L225 Difference]: With dead ends: 264514 [2021-10-07 15:29:11,382 INFO L226 Difference]: Without dead ends: 263974 [2021-10-07 15:29:11,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1108.0ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:29:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263974 states. [2021-10-07 15:29:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263974 to 185500. [2021-10-07 15:29:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185500 states, 185499 states have (on average 8.095359004630753) internal successors, (1501681), 185499 states have internal predecessors, (1501681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185500 states to 185500 states and 1501681 transitions. [2021-10-07 15:29:37,157 INFO L78 Accepts]: Start accepts. Automaton has 185500 states and 1501681 transitions. Word has length 36 [2021-10-07 15:29:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:37,157 INFO L470 AbstractCegarLoop]: Abstraction has 185500 states and 1501681 transitions. [2021-10-07 15:29:37,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 185500 states and 1501681 transitions. [2021-10-07 15:29:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:29:39,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:39,203 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:39,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:39,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:29:39,420 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:29:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1076433778, now seen corresponding path program 5 times [2021-10-07 15:29:39,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:39,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557295766] [2021-10-07 15:29:39,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:29:39,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:39,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:39,422 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:29:39,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process