/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/popl20-more-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:53:59,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:53:59,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:53:59,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 17:53:59,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 17:53:59,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 17:53:59,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 17:53:59,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 17:53:59,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 17:53:59,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 17:53:59,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 17:53:59,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 17:53:59,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:53:59,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:53:59,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:53:59,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:53:59,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:53:59,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:53:59,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:53:59,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:53:59,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:53:59,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:53:59,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:53:59,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:53:59,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:53:59,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 17:53:59,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 17:53:59,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 17:53:59,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 17:53:59,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 17:53:59,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 17:53:59,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 17:53:59,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 17:53:59,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:53:59,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:53:59,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:53:59,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:53:59,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:53:59,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:53:59,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:53:59,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:53:59,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:53:59,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:53:59,261 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:53:59,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:53:59,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:53:59,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:53:59,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:53:59,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:53:59,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:53:59,262 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:53:59,262 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:53:59,263 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:53:59,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:53:59,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:53:59,263 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:53:59,263 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:53:59,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:53:59,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:53:59,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:53:59,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:53:59,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:53:59,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:53:59,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:53:59,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:53:59,266 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:53:59,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:53:59,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:53:59,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:53:59,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:53:59,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:53:59,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:53:59,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:53:59,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:53:59,745 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:53:59,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-10-08 17:53:59,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b90c78a68/3e63f706a47f478680ea5fcfe1f6a7de/FLAG14cc7560d [2021-10-08 17:54:00,572 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:54:00,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-10-08 17:54:00,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b90c78a68/3e63f706a47f478680ea5fcfe1f6a7de/FLAG14cc7560d [2021-10-08 17:54:00,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b90c78a68/3e63f706a47f478680ea5fcfe1f6a7de [2021-10-08 17:54:00,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:54:00,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:54:00,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:54:00,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:54:00,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:54:00,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:54:00" (1/1) ... [2021-10-08 17:54:00,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce2350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:00, skipping insertion in model container [2021-10-08 17:54:00,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:54:00" (1/1) ... [2021-10-08 17:54:00,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:54:00,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:54:01,149 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3603,3616] [2021-10-08 17:54:01,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:54:01,189 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 17:54:01,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:54:01,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3603,3616] [2021-10-08 17:54:01,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:54:01,232 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:54:01,281 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3603,3616] [2021-10-08 17:54:01,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:54:01,307 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:54:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01 WrapperNode [2021-10-08 17:54:01,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:54:01,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:54:01,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:54:01,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:54:01,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:54:01,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:54:01,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:54:01,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:54:01,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:54:01,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:54:01,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:54:01,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:54:01,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (1/1) ... [2021-10-08 17:54:01,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:54:01,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:54:01,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:54:01,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:54:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:54:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:54:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:54:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:54:01,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:54:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:54:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:54:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:54:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:54:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:54:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:54:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 17:54:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:54:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:54:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:54:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:54:01,588 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:54:03,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:54:03,595 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-08 17:54:03,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:54:03 BoogieIcfgContainer [2021-10-08 17:54:03,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:54:03,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:54:03,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:54:03,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:54:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:54:00" (1/3) ... [2021-10-08 17:54:03,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ca92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:54:03, skipping insertion in model container [2021-10-08 17:54:03,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:54:01" (2/3) ... [2021-10-08 17:54:03,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ca92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:54:03, skipping insertion in model container [2021-10-08 17:54:03,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:54:03" (3/3) ... [2021-10-08 17:54:03,608 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-10-08 17:54:03,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:54:03,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-08 17:54:03,616 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:54:03,663 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,663 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,665 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,665 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,665 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,665 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,666 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,666 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,666 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,667 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,667 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,668 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,670 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,670 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,670 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,671 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,692 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,699 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,700 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,700 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,701 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,705 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,705 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,707 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,712 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,712 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,713 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,713 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,714 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,716 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,725 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,727 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,728 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,729 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,729 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,730 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,731 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,732 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,732 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,732 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,733 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,734 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,734 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,734 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,734 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,734 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,740 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,741 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,743 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,745 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,747 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,747 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,747 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,747 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,748 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,749 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,751 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:54:03,761 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:54:03,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:54:03,860 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 [2021-10-08 17:54:03,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2021-10-08 17:54:03,891 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:54:03,904 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-08 17:54:03,909 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-08 17:54:03,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 218 places, 226 transitions, 476 flow [2021-10-08 17:54:04,039 INFO L129 PetriNetUnfolder]: 18/223 cut-off events. [2021-10-08 17:54:04,040 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:54:04,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 18/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2021-10-08 17:54:04,053 INFO L116 LiptonReduction]: Number of co-enabled transitions 3276 [2021-10-08 17:54:41,882 INFO L131 LiptonReduction]: Checked pairs total: 5037 [2021-10-08 17:54:41,883 INFO L133 LiptonReduction]: Total number of compositions: 247 [2021-10-08 17:54:41,895 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 142 flow [2021-10-08 17:54:42,008 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:54:42,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:54:42,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:54:42,028 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:54:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:54:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash 33129, now seen corresponding path program 1 times [2021-10-08 17:54:42,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:54:42,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255120019] [2021-10-08 17:54:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:54:42,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:54:42,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:54:42,052 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) [2021-10-08 17:54:42,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:54:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:54:42,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:54:42,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:54:42,558 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:54:42,560 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:54:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:54:43,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:54:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:54:43,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:54:43,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255120019] [2021-10-08 17:54:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255120019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:54:43,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:54:43,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:54:43,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266128941] [2021-10-08 17:54:43,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:54:43,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:54:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:54:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:54:43,325 INFO L87 Difference]: Start difference. First operand has 1565 states, 1237 states have (on average 4.568310428455942) internal successors, (5651), 1564 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:54:43,631 INFO L93 Difference]: Finished difference Result 1562 states and 5460 transitions. [2021-10-08 17:54:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:54:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:54:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:54:43,671 INFO L225 Difference]: With dead ends: 1562 [2021-10-08 17:54:43,671 INFO L226 Difference]: Without dead ends: 1562 [2021-10-08 17:54:43,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:54:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-08 17:54:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2021-10-08 17:54:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1237 states have (on average 4.413904607922393) internal successors, (5460), 1561 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5460 transitions. [2021-10-08 17:54:43,850 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5460 transitions. Word has length 2 [2021-10-08 17:54:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:54:43,853 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 5460 transitions. [2021-10-08 17:54:43,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5460 transitions. [2021-10-08 17:54:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:54:43,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:54:43,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:54:43,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:54:44,066 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 [2021-10-08 17:54:44,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:54:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:54:44,068 INFO L82 PathProgramCache]: Analyzing trace with hash 33130, now seen corresponding path program 1 times [2021-10-08 17:54:44,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:54:44,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738751266] [2021-10-08 17:54:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:54:44,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:54:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:54:44,071 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) [2021-10-08 17:54:44,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:54:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:54:44,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:54:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:54:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:54:44,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:54:44,503 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:54:44,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:54:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:54:44,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:54:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:54:44,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:54:44,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738751266] [2021-10-08 17:54:44,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738751266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:54:44,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:54:44,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:54:44,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393667786] [2021-10-08 17:54:44,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:54:44,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:54:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:54:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:54:44,714 INFO L87 Difference]: Start difference. First operand 1562 states and 5460 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:54:45,566 INFO L93 Difference]: Finished difference Result 3123 states and 10923 transitions. [2021-10-08 17:54:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:54:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:54:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:54:45,608 INFO L225 Difference]: With dead ends: 3123 [2021-10-08 17:54:45,608 INFO L226 Difference]: Without dead ends: 3123 [2021-10-08 17:54:45,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:54:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2021-10-08 17:54:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 1566. [2021-10-08 17:54:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1241 states have (on average 4.409347300564061) internal successors, (5472), 1565 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 5472 transitions. [2021-10-08 17:54:45,745 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 5472 transitions. Word has length 2 [2021-10-08 17:54:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:54:45,746 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 5472 transitions. [2021-10-08 17:54:45,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 5472 transitions. [2021-10-08 17:54:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:54:45,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:54:45,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:54:45,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:54:45,958 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 [2021-10-08 17:54:45,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:54:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:54:45,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1032560, now seen corresponding path program 1 times [2021-10-08 17:54:45,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:54:45,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454776141] [2021-10-08 17:54:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:54:45,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:54:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:54:45,964 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) [2021-10-08 17:54:45,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:54:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:54:46,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:54:46,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:54:46,369 INFO L354 Elim1Store]: treesize reduction 361, result has 14.7 percent of original size [2021-10-08 17:54:46,370 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 9 case distinctions, treesize of input 189 treesize of output 227 [2021-10-08 17:54:50,965 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-08 17:54:50,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 218 [2021-10-08 17:55:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:06,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:06,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:06,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454776141] [2021-10-08 17:55:06,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454776141] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:55:06,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:55:06,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-08 17:55:06,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333162400] [2021-10-08 17:55:06,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:55:06,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:55:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-08 17:55:06,367 INFO L87 Difference]: Start difference. First operand 1566 states and 5472 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-08 17:55:18,672 WARN L207 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2021-10-08 17:55:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:20,527 INFO L93 Difference]: Finished difference Result 1285 states and 4349 transitions. [2021-10-08 17:55:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:55:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-10-08 17:55:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:20,541 INFO L225 Difference]: With dead ends: 1285 [2021-10-08 17:55:20,541 INFO L226 Difference]: Without dead ends: 1285 [2021-10-08 17:55:20,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16236.7ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-08 17:55:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-10-08 17:55:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2021-10-08 17:55:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1036 states have (on average 4.197876447876448) internal successors, (4349), 1284 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 4349 transitions. [2021-10-08 17:55:20,593 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 4349 transitions. Word has length 3 [2021-10-08 17:55:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:20,594 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 4349 transitions. [2021-10-08 17:55:20,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-08 17:55:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 4349 transitions. [2021-10-08 17:55:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:55:20,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:20,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:55:20,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-08 17:55:20,805 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 [2021-10-08 17:55:20,806 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:55:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:20,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1032561, now seen corresponding path program 1 times [2021-10-08 17:55:20,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:20,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750572364] [2021-10-08 17:55:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:55:20,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:20,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:20,810 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) [2021-10-08 17:55:20,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:55:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:55:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:55:20,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:21,326 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-08 17:55:21,327 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 5 case distinctions, treesize of input 69 treesize of output 103 [2021-10-08 17:55:21,340 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 17:55:21,340 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 378 treesize of output 360 [2021-10-08 17:55:24,665 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-08 17:55:24,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 99 [2021-10-08 17:55:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:35,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:36,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:36,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750572364] [2021-10-08 17:55:36,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750572364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:55:36,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:55:36,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:55:36,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756596810] [2021-10-08 17:55:36,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:55:36,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:36,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:55:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-08 17:55:36,007 INFO L87 Difference]: Start difference. First operand 1285 states and 4349 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-08 17:55:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:45,825 INFO L93 Difference]: Finished difference Result 1004 states and 3226 transitions. [2021-10-08 17:55:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:55:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2021-10-08 17:55:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:45,836 INFO L225 Difference]: With dead ends: 1004 [2021-10-08 17:55:45,837 INFO L226 Difference]: Without dead ends: 1004 [2021-10-08 17:55:45,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2641.4ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 17:55:45,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-08 17:55:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-08 17:55:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 831 states have (on average 3.882069795427196) internal successors, (3226), 1003 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3226 transitions. [2021-10-08 17:55:45,878 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3226 transitions. Word has length 3 [2021-10-08 17:55:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:45,878 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3226 transitions. [2021-10-08 17:55:45,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-08 17:55:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3226 transitions. [2021-10-08 17:55:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:55:45,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:45,879 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 17:55:45,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-08 17:55:46,093 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 [2021-10-08 17:55:46,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:55:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 31966602, now seen corresponding path program 1 times [2021-10-08 17:55:46,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:46,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139733185] [2021-10-08 17:55:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:55:46,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:46,097 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) [2021-10-08 17:55:46,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:55:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:55:46,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:55:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:55:46,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:55:46,466 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:55:46,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:55:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:46,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:47,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:47,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139733185] [2021-10-08 17:55:47,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139733185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:55:47,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:55:47,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:55:47,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180893236] [2021-10-08 17:55:47,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:55:47,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:55:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:55:47,079 INFO L87 Difference]: Start difference. First operand 1004 states and 3226 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:53,204 INFO L93 Difference]: Finished difference Result 5987 states and 19297 transitions. [2021-10-08 17:55:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:55:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 17:55:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:53,270 INFO L225 Difference]: With dead ends: 5987 [2021-10-08 17:55:53,270 INFO L226 Difference]: Without dead ends: 5987 [2021-10-08 17:55:53,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 862.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:55:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5987 states. [2021-10-08 17:55:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5987 to 1012. [2021-10-08 17:55:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 839 states have (on average 3.864123957091776) internal successors, (3242), 1011 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 3242 transitions. [2021-10-08 17:55:53,379 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 3242 transitions. Word has length 4 [2021-10-08 17:55:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:53,379 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 3242 transitions. [2021-10-08 17:55:53,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 3242 transitions. [2021-10-08 17:55:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:55:53,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:53,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:55:53,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:55:53,598 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 [2021-10-08 17:55:53,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:55:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:53,600 INFO L82 PathProgramCache]: Analyzing trace with hash 992316545, now seen corresponding path program 1 times [2021-10-08 17:55:53,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:53,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589238138] [2021-10-08 17:55:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:55:53,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:53,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:53,605 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) [2021-10-08 17:55:53,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:55:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:55:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:55:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:53,953 INFO L354 Elim1Store]: treesize reduction 353, result has 14.9 percent of original size [2021-10-08 17:55:53,953 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 7 case distinctions, treesize of input 533 treesize of output 559 [2021-10-08 17:55:56,721 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-08 17:55:56,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 203 [2021-10-08 17:56:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:19,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:56:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:19,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:56:19,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589238138] [2021-10-08 17:56:19,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589238138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:56:19,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:56:19,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-08 17:56:19,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825628101] [2021-10-08 17:56:19,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:56:19,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:56:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:56:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-08 17:56:19,620 INFO L87 Difference]: Start difference. First operand 1012 states and 3242 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:56:28,931 INFO L93 Difference]: Finished difference Result 965 states and 3108 transitions. [2021-10-08 17:56:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:56:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:56:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:56:28,938 INFO L225 Difference]: With dead ends: 965 [2021-10-08 17:56:28,938 INFO L226 Difference]: Without dead ends: 965 [2021-10-08 17:56:28,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12308.4ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-08 17:56:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-10-08 17:56:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2021-10-08 17:56:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 812 states have (on average 3.8275862068965516) internal successors, (3108), 964 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3108 transitions. [2021-10-08 17:56:28,972 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3108 transitions. Word has length 5 [2021-10-08 17:56:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:56:28,973 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 3108 transitions. [2021-10-08 17:56:28,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3108 transitions. [2021-10-08 17:56:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:56:28,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:56:28,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:56:28,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:56:29,174 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 [2021-10-08 17:56:29,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:56:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:56:29,176 INFO L82 PathProgramCache]: Analyzing trace with hash 992316546, now seen corresponding path program 1 times [2021-10-08 17:56:29,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:56:29,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134908595] [2021-10-08 17:56:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:56:29,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:56:29,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:56:29,179 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) [2021-10-08 17:56:29,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:56:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:56:29,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:56:29,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:56:29,569 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-08 17:56:29,570 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 5 case distinctions, treesize of input 51 treesize of output 91 [2021-10-08 17:56:29,576 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 203 treesize of output 195 [2021-10-08 17:56:34,557 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-08 17:56:34,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 95 [2021-10-08 17:56:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:50,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:56:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:50,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:56:50,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134908595] [2021-10-08 17:56:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134908595] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:56:50,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:56:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:56:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311924865] [2021-10-08 17:56:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:56:50,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:56:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:56:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-08 17:56:50,498 INFO L87 Difference]: Start difference. First operand 965 states and 3108 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:01,165 INFO L93 Difference]: Finished difference Result 918 states and 2974 transitions. [2021-10-08 17:57:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:57:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-08 17:57:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:01,182 INFO L225 Difference]: With dead ends: 918 [2021-10-08 17:57:01,183 INFO L226 Difference]: Without dead ends: 918 [2021-10-08 17:57:01,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3730.4ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 17:57:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-10-08 17:57:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2021-10-08 17:57:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 785 states have (on average 3.788535031847134) internal successors, (2974), 917 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2974 transitions. [2021-10-08 17:57:01,217 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2974 transitions. Word has length 5 [2021-10-08 17:57:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:01,217 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2974 transitions. [2021-10-08 17:57:01,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2974 transitions. [2021-10-08 17:57:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:57:01,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:01,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:57:01,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:01,433 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 [2021-10-08 17:57:01,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:57:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:01,435 INFO L82 PathProgramCache]: Analyzing trace with hash 697034673, now seen corresponding path program 1 times [2021-10-08 17:57:01,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:01,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105521077] [2021-10-08 17:57:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:57:01,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:01,438 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) [2021-10-08 17:57:01,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:57:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:57:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:57:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:01,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:01,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:01,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105521077] [2021-10-08 17:57:01,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105521077] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:57:01,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:57:01,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:57:01,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030945619] [2021-10-08 17:57:01,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:57:01,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:01,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:57:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:57:01,692 INFO L87 Difference]: Start difference. First operand 918 states and 2974 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:01,990 INFO L93 Difference]: Finished difference Result 987 states and 3128 transitions. [2021-10-08 17:57:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:57:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 17:57:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:02,002 INFO L225 Difference]: With dead ends: 987 [2021-10-08 17:57:02,003 INFO L226 Difference]: Without dead ends: 979 [2021-10-08 17:57:02,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:57:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-10-08 17:57:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 978. [2021-10-08 17:57:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 841 states have (on average 3.6956004756242566) internal successors, (3108), 977 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 3108 transitions. [2021-10-08 17:57:02,040 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 3108 transitions. Word has length 6 [2021-10-08 17:57:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:02,040 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 3108 transitions. [2021-10-08 17:57:02,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 3108 transitions. [2021-10-08 17:57:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:57:02,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:02,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:02,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:02,254 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 [2021-10-08 17:57:02,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:57:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:02,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1119934126, now seen corresponding path program 1 times [2021-10-08 17:57:02,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:02,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090706425] [2021-10-08 17:57:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:57:02,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:02,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:02,258 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) [2021-10-08 17:57:02,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:57:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:57:02,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:57:02,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:57:02,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:57:02,690 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:57:02,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-08 17:57:02,976 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:57:02,977 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 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-08 17:57:13,760 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 17:57:13,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-10-08 17:57:13,804 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-08 17:57:13,807 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 59 treesize of output 79 [2021-10-08 17:57:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:14,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:16,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:16,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090706425] [2021-10-08 17:57:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090706425] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:16,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:57:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283957496] [2021-10-08 17:57:16,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:57:16,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:57:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:57:16,261 INFO L87 Difference]: Start difference. First operand 978 states and 3108 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:30,583 INFO L93 Difference]: Finished difference Result 2233 states and 7093 transitions. [2021-10-08 17:57:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 17:57:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2021-10-08 17:57:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:30,596 INFO L225 Difference]: With dead ends: 2233 [2021-10-08 17:57:30,596 INFO L226 Difference]: Without dead ends: 2233 [2021-10-08 17:57:30,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 8136.6ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:57:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-10-08 17:57:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1348. [2021-10-08 17:57:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1211 states have (on average 3.873658133773741) internal successors, (4691), 1347 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4691 transitions. [2021-10-08 17:57:30,651 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4691 transitions. Word has length 7 [2021-10-08 17:57:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:30,652 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4691 transitions. [2021-10-08 17:57:30,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4691 transitions. [2021-10-08 17:57:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:57:30,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:30,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:30,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:30,868 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 [2021-10-08 17:57:30,870 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:57:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:30,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1119934125, now seen corresponding path program 1 times [2021-10-08 17:57:30,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:30,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657554083] [2021-10-08 17:57:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:57:30,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:30,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:30,874 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) [2021-10-08 17:57:30,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:57:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:57:31,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:57:31,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:31,303 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:57:31,303 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:57:32,092 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 17:57:32,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-08 17:57:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:57:32,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:57:32,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:32,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657554083] [2021-10-08 17:57:32,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657554083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:57:32,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:57:32,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 17:57:32,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740033929] [2021-10-08 17:57:32,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:57:32,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:57:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:57:32,181 INFO L87 Difference]: Start difference. First operand 1348 states and 4691 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:32,463 INFO L93 Difference]: Finished difference Result 924 states and 3020 transitions. [2021-10-08 17:57:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:57:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:57:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:32,467 INFO L225 Difference]: With dead ends: 924 [2021-10-08 17:57:32,467 INFO L226 Difference]: Without dead ends: 924 [2021-10-08 17:57:32,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:57:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-08 17:57:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 924. [2021-10-08 17:57:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 852 states have (on average 3.544600938967136) internal successors, (3020), 923 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 3020 transitions. [2021-10-08 17:57:32,499 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 3020 transitions. Word has length 7 [2021-10-08 17:57:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:32,499 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 3020 transitions. [2021-10-08 17:57:32,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 3020 transitions. [2021-10-08 17:57:32,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:57:32,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:32,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:32,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:32,714 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 [2021-10-08 17:57:32,714 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:57:32,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:32,715 INFO L82 PathProgramCache]: Analyzing trace with hash 133483450, now seen corresponding path program 1 times [2021-10-08 17:57:32,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:32,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679644122] [2021-10-08 17:57:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:57:32,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:32,718 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) [2021-10-08 17:57:32,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:57:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:57:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:57:32,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:33,215 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-08 17:57:33,215 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 5 case distinctions, treesize of input 51 treesize of output 83 [2021-10-08 17:57:33,222 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 279 treesize of output 271 [2021-10-08 17:57:33,860 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-08 17:57:33,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 72 [2021-10-08 17:57:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:45,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:45,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:45,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679644122] [2021-10-08 17:57:45,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679644122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:57:45,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:57:45,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:57:45,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429680121] [2021-10-08 17:57:45,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:57:45,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:57:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:57:45,614 INFO L87 Difference]: Start difference. First operand 924 states and 3020 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:48,397 INFO L93 Difference]: Finished difference Result 865 states and 2846 transitions. [2021-10-08 17:57:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:57:48,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-10-08 17:57:48,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:48,403 INFO L225 Difference]: With dead ends: 865 [2021-10-08 17:57:48,403 INFO L226 Difference]: Without dead ends: 865 [2021-10-08 17:57:48,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 429.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:57:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-10-08 17:57:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2021-10-08 17:57:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 809 states have (on average 3.5179233621755253) internal successors, (2846), 864 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2846 transitions. [2021-10-08 17:57:48,440 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2846 transitions. Word has length 7 [2021-10-08 17:57:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:48,441 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2846 transitions. [2021-10-08 17:57:48,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2846 transitions. [2021-10-08 17:57:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:57:48,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:48,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:48,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:48,660 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 [2021-10-08 17:57:48,661 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:57:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash 133483451, now seen corresponding path program 1 times [2021-10-08 17:57:48,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:48,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380980781] [2021-10-08 17:57:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:57:48,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:48,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:48,664 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) [2021-10-08 17:57:48,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:57:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:57:48,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:57:48,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:49,124 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:57:49,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 562 treesize of output 575 [2021-10-08 17:57:52,708 INFO L354 Elim1Store]: treesize reduction 175, result has 42.1 percent of original size [2021-10-08 17:57:52,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 217 [2021-10-08 17:58:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:07,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:07,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:07,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380980781] [2021-10-08 17:58:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380980781] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:07,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:07,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:07,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956376629] [2021-10-08 17:58:07,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:07,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:07,623 INFO L87 Difference]: Start difference. First operand 865 states and 2846 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:07,825 INFO L93 Difference]: Finished difference Result 806 states and 2672 transitions. [2021-10-08 17:58:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:07,825 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 [2021-10-08 17:58:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:07,829 INFO L225 Difference]: With dead ends: 806 [2021-10-08 17:58:07,829 INFO L226 Difference]: Without dead ends: 806 [2021-10-08 17:58:07,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-08 17:58:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2021-10-08 17:58:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 766 states have (on average 3.4882506527415145) internal successors, (2672), 805 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2672 transitions. [2021-10-08 17:58:07,856 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2672 transitions. Word has length 7 [2021-10-08 17:58:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:07,856 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2672 transitions. [2021-10-08 17:58:07,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2672 transitions. [2021-10-08 17:58:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 17:58:07,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:07,858 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 17:58:07,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:08,071 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 [2021-10-08 17:58:08,072 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:08,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1653164598, now seen corresponding path program 2 times [2021-10-08 17:58:08,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:08,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185926270] [2021-10-08 17:58:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:08,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:08,077 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) [2021-10-08 17:58:08,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:58:08,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:58:08,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:08,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:58:08,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:08,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:58:08,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:58:08,713 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:58:08,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:58:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:09,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:11,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:11,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185926270] [2021-10-08 17:58:11,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185926270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:11,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:11,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:58:11,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437712749] [2021-10-08 17:58:11,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:58:11,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:11,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:58:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:58:11,096 INFO L87 Difference]: Start difference. First operand 806 states and 2672 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:33,818 INFO L93 Difference]: Finished difference Result 7023 states and 23594 transitions. [2021-10-08 17:58:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:58:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 17:58:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:33,861 INFO L225 Difference]: With dead ends: 7023 [2021-10-08 17:58:33,861 INFO L226 Difference]: Without dead ends: 7023 [2021-10-08 17:58:33,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7078.2ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:58:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2021-10-08 17:58:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 823. [2021-10-08 17:58:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 783 states have (on average 3.4559386973180075) internal successors, (2706), 822 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2706 transitions. [2021-10-08 17:58:33,963 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2706 transitions. Word has length 8 [2021-10-08 17:58:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:33,963 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2706 transitions. [2021-10-08 17:58:33,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2706 transitions. [2021-10-08 17:58:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:58:33,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:33,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:33,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:34,180 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 [2021-10-08 17:58:34,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1787689570, now seen corresponding path program 1 times [2021-10-08 17:58:34,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:34,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964198047] [2021-10-08 17:58:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:34,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:34,184 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) [2021-10-08 17:58:34,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:58:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:34,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:58:34,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:34,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:34,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:34,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964198047] [2021-10-08 17:58:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964198047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:34,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:34,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:34,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061778115] [2021-10-08 17:58:34,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:34,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:34,500 INFO L87 Difference]: Start difference. First operand 823 states and 2706 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:34,634 INFO L93 Difference]: Finished difference Result 819 states and 2661 transitions. [2021-10-08 17:58:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:34,635 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 [2021-10-08 17:58:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:34,638 INFO L225 Difference]: With dead ends: 819 [2021-10-08 17:58:34,638 INFO L226 Difference]: Without dead ends: 819 [2021-10-08 17:58:34,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-10-08 17:58:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-10-08 17:58:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 773 states have (on average 3.442432082794308) internal successors, (2661), 818 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2661 transitions. [2021-10-08 17:58:34,665 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2661 transitions. Word has length 9 [2021-10-08 17:58:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:34,665 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2661 transitions. [2021-10-08 17:58:34,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2661 transitions. [2021-10-08 17:58:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 17:58:34,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:34,667 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:34,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:34,881 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 [2021-10-08 17:58:34,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:34,882 INFO L82 PathProgramCache]: Analyzing trace with hash 488622065, now seen corresponding path program 2 times [2021-10-08 17:58:34,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:34,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991248009] [2021-10-08 17:58:34,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:34,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:34,884 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) [2021-10-08 17:58:34,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:58:35,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:58:35,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:58:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:35,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:58:35,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:58:35,438 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:58:35,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-08 17:58:35,779 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:58:35,780 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 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-08 17:58:47,663 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 17:58:47,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 64 [2021-10-08 17:58:47,725 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-08 17:58:47,726 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 61 treesize of output 81 [2021-10-08 17:58:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:58:48,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:58:50,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:50,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991248009] [2021-10-08 17:58:50,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991248009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:50,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:50,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:58:50,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932466023] [2021-10-08 17:58:50,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:58:50,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:58:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:58:50,604 INFO L87 Difference]: Start difference. First operand 819 states and 2661 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:51,120 INFO L93 Difference]: Finished difference Result 561 states and 1819 transitions. [2021-10-08 17:58:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 10 [2021-10-08 17:58:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:51,124 INFO L225 Difference]: With dead ends: 561 [2021-10-08 17:58:51,124 INFO L226 Difference]: Without dead ends: 561 [2021-10-08 17:58:51,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 200.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:58:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-10-08 17:58:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 356. [2021-10-08 17:58:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 343 states have (on average 3.072886297376093) internal successors, (1054), 355 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1054 transitions. [2021-10-08 17:58:51,135 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1054 transitions. Word has length 10 [2021-10-08 17:58:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:51,135 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1054 transitions. [2021-10-08 17:58:51,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1054 transitions. [2021-10-08 17:58:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 17:58:51,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:51,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:51,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-08 17:58:51,349 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 [2021-10-08 17:58:51,350 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:51,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash -533439560, now seen corresponding path program 1 times [2021-10-08 17:58:51,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:51,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708408821] [2021-10-08 17:58:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:51,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:51,353 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) [2021-10-08 17:58:51,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:58:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:51,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:51,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:51,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:51,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708408821] [2021-10-08 17:58:51,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708408821] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:51,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:51,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:51,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353967909] [2021-10-08 17:58:51,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:51,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:51,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:51,716 INFO L87 Difference]: Start difference. First operand 356 states and 1054 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:51,876 INFO L93 Difference]: Finished difference Result 362 states and 1048 transitions. [2021-10-08 17:58:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:51,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 17:58:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:51,878 INFO L225 Difference]: With dead ends: 362 [2021-10-08 17:58:51,878 INFO L226 Difference]: Without dead ends: 333 [2021-10-08 17:58:51,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-08 17:58:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-10-08 17:58:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 320 states have (on average 3.071875) internal successors, (983), 332 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 983 transitions. [2021-10-08 17:58:51,891 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 983 transitions. Word has length 10 [2021-10-08 17:58:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:51,892 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 983 transitions. [2021-10-08 17:58:51,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 983 transitions. [2021-10-08 17:58:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 17:58:51,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:51,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:51,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:52,107 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 [2021-10-08 17:58:52,108 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:52,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1405917541, now seen corresponding path program 1 times [2021-10-08 17:58:52,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:52,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804888225] [2021-10-08 17:58:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:52,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:52,112 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) [2021-10-08 17:58:52,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:58:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:52,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 17:58:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:52,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:52,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:52,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804888225] [2021-10-08 17:58:52,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804888225] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:52,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:52,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-08 17:58:52,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719031272] [2021-10-08 17:58:52,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:52,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:52,455 INFO L87 Difference]: Start difference. First operand 333 states and 983 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:52,685 INFO L93 Difference]: Finished difference Result 257 states and 741 transitions. [2021-10-08 17:58:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:52,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 17:58:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:52,686 INFO L225 Difference]: With dead ends: 257 [2021-10-08 17:58:52,687 INFO L226 Difference]: Without dead ends: 257 [2021-10-08 17:58:52,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-08 17:58:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-10-08 17:58:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 250 states have (on average 2.964) internal successors, (741), 256 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 741 transitions. [2021-10-08 17:58:52,694 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 741 transitions. Word has length 11 [2021-10-08 17:58:52,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:52,694 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 741 transitions. [2021-10-08 17:58:52,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 741 transitions. [2021-10-08 17:58:52,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 17:58:52,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:52,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:52,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:52,908 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 [2021-10-08 17:58:52,909 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1405917543, now seen corresponding path program 1 times [2021-10-08 17:58:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:52,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871709761] [2021-10-08 17:58:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:52,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:52,913 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) [2021-10-08 17:58:52,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:58:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:53,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:58:53,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:53,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:53,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:53,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871709761] [2021-10-08 17:58:53,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871709761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:53,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:53,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:58:53,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513282518] [2021-10-08 17:58:53,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:58:53,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:58:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:58:53,335 INFO L87 Difference]: Start difference. First operand 257 states and 741 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:53,512 INFO L93 Difference]: Finished difference Result 338 states and 954 transitions. [2021-10-08 17:58:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:58:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 17:58:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:53,515 INFO L225 Difference]: With dead ends: 338 [2021-10-08 17:58:53,515 INFO L226 Difference]: Without dead ends: 257 [2021-10-08 17:58:53,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:58:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-08 17:58:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-10-08 17:58:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 250 states have (on average 2.96) internal successors, (740), 256 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 740 transitions. [2021-10-08 17:58:53,524 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 740 transitions. Word has length 11 [2021-10-08 17:58:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:53,525 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 740 transitions. [2021-10-08 17:58:53,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 740 transitions. [2021-10-08 17:58:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 17:58:53,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:53,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:53,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:53,740 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 [2021-10-08 17:58:53,740 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1631512472, now seen corresponding path program 1 times [2021-10-08 17:58:53,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:53,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710691423] [2021-10-08 17:58:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:53,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:53,743 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) [2021-10-08 17:58:53,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:58:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:54,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:58:54,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:54,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:58:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:54,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:55,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:55,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710691423] [2021-10-08 17:58:55,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710691423] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:55,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:55,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:58:55,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068327199] [2021-10-08 17:58:55,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:58:55,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:58:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:58:55,668 INFO L87 Difference]: Start difference. First operand 257 states and 740 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 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) [2021-10-08 17:58:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:58,657 INFO L93 Difference]: Finished difference Result 567 states and 1690 transitions. [2021-10-08 17:58:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:58:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 17:58:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:58,661 INFO L225 Difference]: With dead ends: 567 [2021-10-08 17:58:58,661 INFO L226 Difference]: Without dead ends: 567 [2021-10-08 17:58:58,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1299.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:58:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-08 17:58:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 402. [2021-10-08 17:58:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 395 states have (on average 3.0455696202531644) internal successors, (1203), 401 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1203 transitions. [2021-10-08 17:58:58,679 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1203 transitions. Word has length 12 [2021-10-08 17:58:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:58,681 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1203 transitions. [2021-10-08 17:58:58,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 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) [2021-10-08 17:58:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1203 transitions. [2021-10-08 17:58:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 17:58:58,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:58,682 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-08 17:58:58,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:58,886 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 [2021-10-08 17:58:58,887 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:58:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash 433661327, now seen corresponding path program 1 times [2021-10-08 17:58:58,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:58,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750867145] [2021-10-08 17:58:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:58,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:58,890 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) [2021-10-08 17:58:58,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:58:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:59,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:58:59,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:59,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:58:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:59,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:03,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:03,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750867145] [2021-10-08 17:59:03,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750867145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:03,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:03,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:59:03,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349621093] [2021-10-08 17:59:03,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:59:03,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:59:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:59:03,588 INFO L87 Difference]: Start difference. First operand 402 states and 1203 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:11,492 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 113 [2021-10-08 17:59:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:53,633 INFO L93 Difference]: Finished difference Result 3810 states and 11676 transitions. [2021-10-08 17:59:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:59:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 17:59:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:53,647 INFO L225 Difference]: With dead ends: 3810 [2021-10-08 17:59:53,647 INFO L226 Difference]: Without dead ends: 3810 [2021-10-08 17:59:53,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 24840.8ms TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:59:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-10-08 17:59:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 424. [2021-10-08 17:59:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 417 states have (on average 2.964028776978417) internal successors, (1236), 423 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1236 transitions. [2021-10-08 17:59:53,680 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1236 transitions. Word has length 12 [2021-10-08 17:59:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:53,680 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1236 transitions. [2021-10-08 17:59:53,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1236 transitions. [2021-10-08 17:59:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:59:53,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:53,682 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:53,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:53,895 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 [2021-10-08 17:59:53,895 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:59:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1158094247, now seen corresponding path program 2 times [2021-10-08 17:59:53,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:53,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493667144] [2021-10-08 17:59:53,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:59:53,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:53,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:53,899 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) [2021-10-08 17:59:53,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:59:54,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:59:54,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:59:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:54,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:59:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 17:59:54,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 17:59:55,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:55,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493667144] [2021-10-08 17:59:55,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493667144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:55,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:55,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:59:55,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940585077] [2021-10-08 17:59:55,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:59:55,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:55,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:59:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:59:55,713 INFO L87 Difference]: Start difference. First operand 424 states and 1236 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-10-08 17:59:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:56,015 INFO L93 Difference]: Finished difference Result 360 states and 1034 transitions. [2021-10-08 17:59:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:59:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 15 [2021-10-08 17:59:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:56,017 INFO L225 Difference]: With dead ends: 360 [2021-10-08 17:59:56,017 INFO L226 Difference]: Without dead ends: 360 [2021-10-08 17:59:56,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:59:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-08 17:59:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 215. [2021-10-08 17:59:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 212 states have (on average 2.693396226415094) internal successors, (571), 214 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 571 transitions. [2021-10-08 17:59:56,024 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 571 transitions. Word has length 15 [2021-10-08 17:59:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:56,024 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 571 transitions. [2021-10-08 17:59:56,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-10-08 17:59:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 571 transitions. [2021-10-08 17:59:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:59:56,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:56,026 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 17:59:56,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:56,238 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 [2021-10-08 17:59:56,239 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 17:59:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:56,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1649292874, now seen corresponding path program 3 times [2021-10-08 17:59:56,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:56,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943209964] [2021-10-08 17:59:56,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:59:56,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:56,243 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) [2021-10-08 17:59:56,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:59:56,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 17:59:56,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:59:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:59:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:59:57,089 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:59:57,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:59:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:58,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:06,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:06,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943209964] [2021-10-08 18:00:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943209964] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:06,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:06,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 18:00:06,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755826240] [2021-10-08 18:00:06,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 18:00:06,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 18:00:06,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 18:00:06,301 INFO L87 Difference]: Start difference. First operand 215 states and 571 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:25,216 WARN L207 SmtUtils]: Spent 13.76 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 18:00:36,550 WARN L207 SmtUtils]: Spent 10.14 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 18:00:46,023 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-08 18:01:26,485 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 125 [2021-10-08 18:01:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:50,552 INFO L93 Difference]: Finished difference Result 2556 states and 7728 transitions. [2021-10-08 18:01:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 18:01:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:01:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:50,560 INFO L225 Difference]: With dead ends: 2556 [2021-10-08 18:01:50,560 INFO L226 Difference]: Without dead ends: 2556 [2021-10-08 18:01:50,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 70752.2ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:01:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-10-08 18:01:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 231. [2021-10-08 18:01:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 228 states have (on average 2.6447368421052633) internal successors, (603), 230 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 603 transitions. [2021-10-08 18:01:50,583 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 603 transitions. Word has length 16 [2021-10-08 18:01:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:50,583 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 603 transitions. [2021-10-08 18:01:50,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 603 transitions. [2021-10-08 18:01:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:01:50,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:50,585 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-08 18:01:50,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:50,799 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 [2021-10-08 18:01:50,799 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:01:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -936392382, now seen corresponding path program 2 times [2021-10-08 18:01:50,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:50,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532348947] [2021-10-08 18:01:50,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:01:50,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:50,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:50,803 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) [2021-10-08 18:01:50,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:01:51,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:01:51,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:51,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 18:01:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:51,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 18:01:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:52,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:08,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:08,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532348947] [2021-10-08 18:02:08,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532348947] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:08,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:08,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-10-08 18:02:08,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353820925] [2021-10-08 18:02:08,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 18:02:08,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:08,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 18:02:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 18:02:08,255 INFO L87 Difference]: Start difference. First operand 231 states and 603 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:46,086 WARN L207 SmtUtils]: Spent 25.00 s on a formula simplification that was a NOOP. DAG size: 232 [2021-10-08 18:03:52,264 WARN L207 SmtUtils]: Spent 21.75 s on a formula simplification that was a NOOP. DAG size: 222 [2021-10-08 18:04:18,445 WARN L207 SmtUtils]: Spent 24.00 s on a formula simplification that was a NOOP. DAG size: 211 [2021-10-08 18:04:40,694 WARN L207 SmtUtils]: Spent 20.05 s on a formula simplification that was a NOOP. DAG size: 200 [2021-10-08 18:05:01,442 WARN L207 SmtUtils]: Spent 18.68 s on a formula simplification that was a NOOP. DAG size: 189 [2021-10-08 18:05:19,641 WARN L207 SmtUtils]: Spent 15.80 s on a formula simplification that was a NOOP. DAG size: 179 [2021-10-08 18:05:38,329 WARN L207 SmtUtils]: Spent 15.74 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 18:05:51,016 WARN L207 SmtUtils]: Spent 9.91 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 18:06:01,246 WARN L207 SmtUtils]: Spent 8.00 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-08 18:06:10,672 WARN L207 SmtUtils]: Spent 6.77 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-08 18:06:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:56,343 INFO L93 Difference]: Finished difference Result 6475 states and 19669 transitions. [2021-10-08 18:06:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:06:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:06:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:56,362 INFO L225 Difference]: With dead ends: 6475 [2021-10-08 18:06:56,362 INFO L226 Difference]: Without dead ends: 6475 [2021-10-08 18:06:56,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 221561.0ms TimeCoverageRelationStatistics Valid=1406, Invalid=2626, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 18:06:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2021-10-08 18:06:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 275. [2021-10-08 18:06:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 272 states have (on average 2.4595588235294117) internal successors, (669), 274 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 669 transitions. [2021-10-08 18:06:56,430 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 669 transitions. Word has length 23 [2021-10-08 18:06:56,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:56,431 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 669 transitions. [2021-10-08 18:06:56,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 669 transitions. [2021-10-08 18:06:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:06:56,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:56,432 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] [2021-10-08 18:06:56,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 18:06:56,642 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 [2021-10-08 18:06:56,644 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:06:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash -179394793, now seen corresponding path program 1 times [2021-10-08 18:06:56,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:56,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115112654] [2021-10-08 18:06:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:06:56,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:56,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:56,648 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) [2021-10-08 18:06:56,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:06:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:06:57,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:06:57,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:06:58,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:06:59,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:59,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115112654] [2021-10-08 18:06:59,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115112654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:06:59,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:06:59,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-08 18:06:59,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971706744] [2021-10-08 18:06:59,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:06:59,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:06:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:06:59,044 INFO L87 Difference]: Start difference. First operand 275 states and 669 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:00,330 INFO L93 Difference]: Finished difference Result 354 states and 916 transitions. [2021-10-08 18:07:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:07:00,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:07:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:00,331 INFO L225 Difference]: With dead ends: 354 [2021-10-08 18:07:00,331 INFO L226 Difference]: Without dead ends: 347 [2021-10-08 18:07:00,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 830.2ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:07:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-08 18:07:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 297. [2021-10-08 18:07:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 2.438775510204082) internal successors, (717), 296 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 717 transitions. [2021-10-08 18:07:00,338 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 717 transitions. Word has length 24 [2021-10-08 18:07:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 717 transitions. [2021-10-08 18:07:00,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 717 transitions. [2021-10-08 18:07:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:07:00,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:00,340 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] [2021-10-08 18:07:00,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:00,540 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 [2021-10-08 18:07:00,541 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:07:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:00,541 INFO L82 PathProgramCache]: Analyzing trace with hash 926580583, now seen corresponding path program 2 times [2021-10-08 18:07:00,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:00,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652297142] [2021-10-08 18:07:00,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:07:00,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:00,545 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) [2021-10-08 18:07:00,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:07:00,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:07:00,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:00,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:07:00,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:01,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:02,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:02,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652297142] [2021-10-08 18:07:02,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652297142] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:07:02,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:07:02,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-08 18:07:02,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441177105] [2021-10-08 18:07:02,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:07:02,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:07:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:07:02,706 INFO L87 Difference]: Start difference. First operand 297 states and 717 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:03,977 INFO L93 Difference]: Finished difference Result 404 states and 1030 transitions. [2021-10-08 18:07:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:07:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:07:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:03,980 INFO L225 Difference]: With dead ends: 404 [2021-10-08 18:07:03,980 INFO L226 Difference]: Without dead ends: 397 [2021-10-08 18:07:03,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 776.2ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:07:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-08 18:07:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 317. [2021-10-08 18:07:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 314 states have (on average 2.4522292993630574) internal successors, (770), 316 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 770 transitions. [2021-10-08 18:07:03,985 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 770 transitions. Word has length 24 [2021-10-08 18:07:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 770 transitions. [2021-10-08 18:07:03,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 770 transitions. [2021-10-08 18:07:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:07:03,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:03,988 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] [2021-10-08 18:07:04,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:04,201 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 [2021-10-08 18:07:04,202 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:07:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2082619075, now seen corresponding path program 3 times [2021-10-08 18:07:04,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:04,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567979539] [2021-10-08 18:07:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:07:04,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:04,205 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) [2021-10-08 18:07:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:07:04,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 18:07:04,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:04,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:07:04,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:05,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:06,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:06,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567979539] [2021-10-08 18:07:06,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567979539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:07:06,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:07:06,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-08 18:07:06,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687598595] [2021-10-08 18:07:06,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:07:06,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:07:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:07:06,195 INFO L87 Difference]: Start difference. First operand 317 states and 770 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:07,419 INFO L93 Difference]: Finished difference Result 442 states and 1130 transitions. [2021-10-08 18:07:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:07:07,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:07:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:07,421 INFO L225 Difference]: With dead ends: 442 [2021-10-08 18:07:07,421 INFO L226 Difference]: Without dead ends: 435 [2021-10-08 18:07:07,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 701.9ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:07:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-08 18:07:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 325. [2021-10-08 18:07:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 322 states have (on average 2.4316770186335406) internal successors, (783), 324 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 783 transitions. [2021-10-08 18:07:07,430 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 783 transitions. Word has length 24 [2021-10-08 18:07:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:07,430 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 783 transitions. [2021-10-08 18:07:07,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 783 transitions. [2021-10-08 18:07:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:07:07,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:07,432 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] [2021-10-08 18:07:07,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:07,645 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 [2021-10-08 18:07:07,646 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:07:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash 899500585, now seen corresponding path program 4 times [2021-10-08 18:07:07,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:07,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851515288] [2021-10-08 18:07:07,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:07:07,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:07,649 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) [2021-10-08 18:07:07,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:07:08,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:07:08,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:07:08,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:08,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:09,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:09,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851515288] [2021-10-08 18:07:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851515288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:07:09,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:07:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-08 18:07:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143512856] [2021-10-08 18:07:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:07:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:07:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:07:09,770 INFO L87 Difference]: Start difference. First operand 325 states and 783 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:11,116 INFO L93 Difference]: Finished difference Result 386 states and 957 transitions. [2021-10-08 18:07:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:07:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:07:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:11,117 INFO L225 Difference]: With dead ends: 386 [2021-10-08 18:07:11,117 INFO L226 Difference]: Without dead ends: 379 [2021-10-08 18:07:11,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 749.3ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:07:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-08 18:07:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 321. [2021-10-08 18:07:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 2.4245283018867925) internal successors, (771), 320 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 771 transitions. [2021-10-08 18:07:11,123 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 771 transitions. Word has length 24 [2021-10-08 18:07:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:11,124 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 771 transitions. [2021-10-08 18:07:11,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 771 transitions. [2021-10-08 18:07:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:07:11,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:11,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:11,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:11,326 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 [2021-10-08 18:07:11,327 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:07:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1894638705, now seen corresponding path program 1 times [2021-10-08 18:07:11,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:11,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933257504] [2021-10-08 18:07:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:07:11,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:11,330 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) [2021-10-08 18:07:11,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:07:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:07:11,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:07:11,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:12,002 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-08 18:07:12,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-08 18:07:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:12,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:12,281 INFO L354 Elim1Store]: treesize reduction 484, result has 1.4 percent of original size [2021-10-08 18:07:12,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 28 [2021-10-08 18:07:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:12,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:12,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933257504] [2021-10-08 18:07:12,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933257504] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:07:12,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:07:12,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-08 18:07:12,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155956703] [2021-10-08 18:07:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:07:12,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:07:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:07:12,390 INFO L87 Difference]: Start difference. First operand 321 states and 771 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:13,051 INFO L93 Difference]: Finished difference Result 393 states and 985 transitions. [2021-10-08 18:07:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:07:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:07:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:13,053 INFO L225 Difference]: With dead ends: 393 [2021-10-08 18:07:13,053 INFO L226 Difference]: Without dead ends: 393 [2021-10-08 18:07:13,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 180.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:07:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-08 18:07:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 371. [2021-10-08 18:07:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 368 states have (on average 2.4809782608695654) internal successors, (913), 370 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 913 transitions. [2021-10-08 18:07:13,059 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 913 transitions. Word has length 25 [2021-10-08 18:07:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:13,059 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 913 transitions. [2021-10-08 18:07:13,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 913 transitions. [2021-10-08 18:07:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:07:13,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:13,061 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] [2021-10-08 18:07:13,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:13,262 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 [2021-10-08 18:07:13,263 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 37 more)] === [2021-10-08 18:07:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1231700325, now seen corresponding path program 1 times [2021-10-08 18:07:13,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:13,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146477971] [2021-10-08 18:07:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:07:13,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:13,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:13,267 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) [2021-10-08 18:07:13,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:07:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:07:13,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:07:13,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:14,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:25,586 WARN L207 SmtUtils]: Spent 8.91 s on a formula simplification. DAG size of input: 530 DAG size of output: 308 [2021-10-08 18:07:25,590 INFO L354 Elim1Store]: treesize reduction 1069, result has 53.4 percent of original size [2021-10-08 18:07:25,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 176 treesize of output 1259 Received shutdown request... [2021-10-08 18:07:50,423 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:07:50,423 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:07:50,453 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:07:50,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:50,661 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 [2021-10-08 18:07:50,662 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. [2021-10-08 18:07:50,665 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 18:07:50,665 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:07:50,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:07:50,667 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,667 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,667 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:07:50,667 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:07:50,667 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:07:50,668 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:07:50,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:07:50,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 18:07:50,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 18:07:50,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 18:07:50,669 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 18:07:50,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 18:07:50,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 18:07:50,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:07:50,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:07:50,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:07:50,671 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 18:07:50,671 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 18:07:50,671 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 18:07:50,671 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,671 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,672 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,672 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,672 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:07:50,672 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:07:50,672 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:07:50,673 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:07:50,684 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:07:50,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:07:50,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:07:50 BasicIcfg [2021-10-08 18:07:50,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:07:50,688 INFO L168 Benchmark]: Toolchain (without parser) took 829783.04 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 147.9 MB in the beginning and 138.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 144.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,688 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 166.7 MB. Free memory is still 139.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:07:50,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.34 ms. Allocated memory is still 166.7 MB. Free memory was 147.4 MB in the beginning and 133.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.80 ms. Allocated memory is still 166.7 MB. Free memory was 133.0 MB in the beginning and 148.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,689 INFO L168 Benchmark]: Boogie Preprocessor took 45.61 ms. Allocated memory is still 166.7 MB. Free memory was 148.6 MB in the beginning and 146.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,689 INFO L168 Benchmark]: RCFGBuilder took 2130.89 ms. Allocated memory is still 166.7 MB. Free memory was 146.5 MB in the beginning and 100.6 MB in the end (delta: 45.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,690 INFO L168 Benchmark]: TraceAbstraction took 827086.10 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 100.4 MB in the beginning and 138.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:07:50,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 166.7 MB. Free memory is still 139.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.34 ms. Allocated memory is still 166.7 MB. Free memory was 147.4 MB in the beginning and 133.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 110.80 ms. Allocated memory is still 166.7 MB. Free memory was 133.0 MB in the beginning and 148.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.61 ms. Allocated memory is still 166.7 MB. Free memory was 148.6 MB in the beginning and 146.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2130.89 ms. Allocated memory is still 166.7 MB. Free memory was 146.5 MB in the beginning and 100.6 MB in the end (delta: 45.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 827086.10 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 100.4 MB in the beginning and 138.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37973.6ms, 218 PlacesBefore, 63 PlacesAfterwards, 226 TransitionsBefore, 59 TransitionsAfterwards, 3276 CoEnabledTransitionPairs, 8 FixpointIterations, 141 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 247 TotalNumberOfCompositions, 5037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4150, positive: 4083, positive conditional: 0, positive unconditional: 4083, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1953, positive: 1936, positive conditional: 0, positive unconditional: 1936, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1953, positive: 1926, positive conditional: 0, positive unconditional: 1926, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1562, positive: 483, positive conditional: 0, positive unconditional: 483, negative: 1079, negative conditional: 0, negative unconditional: 1079, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4150, positive: 2147, positive conditional: 0, positive unconditional: 2147, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 1953, unknown conditional: 0, unknown unconditional: 1953] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 170, Positive conditional cache size: 0, Positive unconditional cache size: 170, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 255 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 826839.8ms, OverallIterations: 29, TraceHistogramMax: 20, EmptinessCheckTime: 42.2ms, AutomataDifference: 544941.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38147.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1215 SDtfs, 18501 SDslu, 9726 SDs, 0 SdLazy, 15939 SolverSat, 1658 SolverUnsat, 58 SolverUnknown, 0 SolverNotchecked, 206319.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 650 GetRequests, 337 SyntacticMatches, 6 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 374081.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1566occurred in iteration=2, InterpolantAutomatonStates: 254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1089.4ms AutomataMinimizationTime, 28 MinimizatonAttempts, 26364 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 331.2ms SsaConstructionTime, 2391.4ms SatisfiabilityAnalysisTime, 192658.1ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 576 ConstructedInterpolants, 72 QuantifiedInterpolants, 12357 SizeOfPredicates, 186 NumberOfNonLiveVariables, 3026 ConjunctsInSsa, 328 ConjunctsInUnsatCore, 56 InterpolantComputations, 42 PerfectInterpolantSequences, 74/846 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown