/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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:02:49,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:02:49,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:02:49,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 18:02:49,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 18:02:49,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 18:02:49,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 18:02:49,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 18:02:49,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 18:02:49,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 18:02:49,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 18:02:49,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 18:02:49,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 18:02:49,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 18:02:49,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 18:02:49,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 18:02:49,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 18:02:49,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 18:02:49,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 18:02:49,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 18:02:49,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 18:02:49,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 18:02:49,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 18:02:49,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 18:02:49,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 18:02:49,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 18:02:49,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 18:02:49,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 18:02:49,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 18:02:49,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 18:02:49,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 18:02:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 18:02:49,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 18:02:49,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:02:49,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:02:49,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:02:49,320 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 18:02:49,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:02:49,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:02:49,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:02:49,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:02:49,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:02:49,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:02:49,352 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:02:49,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:02:49,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:02:49,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:02:49,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:02:49,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:02:49,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:02:49,353 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:02:49,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:02:49,354 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:02:49,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:02:49,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:02:49,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:02:49,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:02:49,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:02:49,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:02:49,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:02:49,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:02:49,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:02:49,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:02:49,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:02:49,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:02:49,357 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:02:49,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:02:49,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:02:49,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:02:49,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:02:49,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:02:49,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:02:49,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:02:49,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:02:49,847 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:02:49,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 18:02:49,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41738e7d9/426069bfaec949e5b7b0dd0a5e964cbd/FLAGad1d7d057 [2021-10-08 18:02:50,517 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:02:50,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 18:02:50,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41738e7d9/426069bfaec949e5b7b0dd0a5e964cbd/FLAGad1d7d057 [2021-10-08 18:02:50,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41738e7d9/426069bfaec949e5b7b0dd0a5e964cbd [2021-10-08 18:02:50,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:02:50,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:02:50,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:02:50,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:02:50,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:02:50,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:02:50" (1/1) ... [2021-10-08 18:02:50,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342e5f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:50, skipping insertion in model container [2021-10-08 18:02:50,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:02:50" (1/1) ... [2021-10-08 18:02:50,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:02:50,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:02:51,249 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-proofs-counter-add-4-semi-Q67.wvr.c[2597,2610] [2021-10-08 18:02:51,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:02:51,268 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:02:51,295 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-proofs-counter-add-4-semi-Q67.wvr.c[2597,2610] [2021-10-08 18:02:51,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:02:51,316 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:02:51,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51 WrapperNode [2021-10-08 18:02:51,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:02:51,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:02:51,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:02:51,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:02:51,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:02:51,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:02:51,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:02:51,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:02:51,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:02:51,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:02:51,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:02:51,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:02:51,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (1/1) ... [2021-10-08 18:02:51,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:02:51,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:02:51,535 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 18:02:51,563 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 18:02:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:02:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:02:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:02:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:02:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 18:02:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 18:02:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:02:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 18:02:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 18:02:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:02:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 18:02:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 18:02:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:02:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:02:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:02:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:02:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:02:51,618 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 18:02:52,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:02:52,394 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-08 18:02:52,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:02:52 BoogieIcfgContainer [2021-10-08 18:02:52,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:02:52,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:02:52,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:02:52,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:02:52,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:02:50" (1/3) ... [2021-10-08 18:02:52,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1505fb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:02:52, skipping insertion in model container [2021-10-08 18:02:52,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:02:51" (2/3) ... [2021-10-08 18:02:52,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1505fb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:02:52, skipping insertion in model container [2021-10-08 18:02:52,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:02:52" (3/3) ... [2021-10-08 18:02:52,406 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-08 18:02:52,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:02:52,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 18:02:52,413 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:02:52,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,482 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,483 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,514 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,514 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,515 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,515 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,515 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,515 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:02:52,535 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 18:02:52,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:02:52,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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 18:02:52,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 18:02:52,709 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:02:52,723 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 139 transitions, 310 flow [2021-10-08 18:02:52,733 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 139 transitions, 310 flow [2021-10-08 18:02:52,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 139 transitions, 310 flow [2021-10-08 18:02:52,864 INFO L129 PetriNetUnfolder]: 10/135 cut-off events. [2021-10-08 18:02:52,864 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 18:02:52,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 135 events. 10/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2021-10-08 18:02:52,879 INFO L116 LiptonReduction]: Number of co-enabled transitions 1608 [2021-10-08 18:03:11,141 INFO L131 LiptonReduction]: Checked pairs total: 2094 [2021-10-08 18:03:11,141 INFO L133 LiptonReduction]: Total number of compositions: 129 [2021-10-08 18:03:11,153 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-08 18:03:11,182 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:03:11,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:11,193 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:03:11,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash 577, now seen corresponding path program 1 times [2021-10-08 18:03:11,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:11,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251000994] [2021-10-08 18:03:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:11,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:11,222 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 18:03:11,226 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 18:03:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:11,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:03:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:11,310 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 18:03:11,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:11,312 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 18:03:11,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:11,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251000994] [2021-10-08 18:03:11,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251000994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:11,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:11,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:03:11,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104033826] [2021-10-08 18:03:11,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:03:11,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:03:11,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:03:11,342 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:11,374 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-08 18:03:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:03:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 18:03:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:11,393 INFO L225 Difference]: With dead ends: 180 [2021-10-08 18:03:11,393 INFO L226 Difference]: Without dead ends: 180 [2021-10-08 18:03:11,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:03:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-08 18:03:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-08 18:03:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-08 18:03:11,465 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-08 18:03:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:11,466 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-08 18:03:11,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-08 18:03:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:03:11,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:11,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:03:11,485 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 18:03:11,681 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 18:03:11,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash 569620, now seen corresponding path program 1 times [2021-10-08 18:03:11,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:11,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690981749] [2021-10-08 18:03:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:11,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:11,688 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 18:03:11,691 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 18:03:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:11,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:03:11,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:12,170 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 18:03:12,172 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 157 treesize of output 194 [2021-10-08 18:03:16,589 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 18:03:16,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:16,606 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 18:03:16,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:16,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690981749] [2021-10-08 18:03:16,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690981749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:16,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:16,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:03:16,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254071968] [2021-10-08 18:03:16,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:16,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:16,614 INFO L87 Difference]: Start difference. First operand 180 states and 692 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:16,724 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-08 18:03:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:16,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:03:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:16,729 INFO L225 Difference]: With dead ends: 170 [2021-10-08 18:03:16,729 INFO L226 Difference]: Without dead ends: 170 [2021-10-08 18:03:16,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-08 18:03:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-08 18:03:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-08 18:03:16,749 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-08 18:03:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:16,750 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-08 18:03:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-08 18:03:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:03:16,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:16,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:03:16,773 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 18:03:16,971 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 18:03:16,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash 569621, now seen corresponding path program 1 times [2021-10-08 18:03:16,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:16,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916683936] [2021-10-08 18:03:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:16,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:16,976 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 18:03:16,981 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 18:03:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:17,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:03:17,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:17,273 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 18:03:17,274 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 44 treesize of output 76 [2021-10-08 18:03:17,291 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 103 treesize of output 101 [2021-10-08 18:03:18,433 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 18:03:18,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:18,474 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 18:03:18,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:18,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916683936] [2021-10-08 18:03:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916683936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:18,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:18,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:03:18,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712128222] [2021-10-08 18:03:18,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:18,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:18,479 INFO L87 Difference]: Start difference. First operand 170 states and 656 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:18,540 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-08 18:03:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:03:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:18,544 INFO L225 Difference]: With dead ends: 160 [2021-10-08 18:03:18,544 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 18:03:18,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 18:03:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 18:03:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-08 18:03:18,558 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-08 18:03:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:18,559 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-08 18:03:18,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-08 18:03:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:03:18,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:18,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:03:18,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:18,772 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 18:03:18,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash 547420073, now seen corresponding path program 1 times [2021-10-08 18:03:18,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:18,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689196967] [2021-10-08 18:03:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:18,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:18,778 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 18:03:18,779 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 18:03:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:18,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:03:18,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:19,120 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 18:03:19,120 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 18:03:19,658 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 18:03:19,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:19,672 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 18:03:19,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:19,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689196967] [2021-10-08 18:03:19,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689196967] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:19,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:19,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:03:19,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721738127] [2021-10-08 18:03:19,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:03:19,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:03:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:19,676 INFO L87 Difference]: Start difference. First operand 160 states and 620 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:19,725 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-08 18:03:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:03:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:19,728 INFO L225 Difference]: With dead ends: 152 [2021-10-08 18:03:19,728 INFO L226 Difference]: Without dead ends: 152 [2021-10-08 18:03:19,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-08 18:03:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-08 18:03:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-08 18:03:19,741 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-08 18:03:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:19,741 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-08 18:03:19,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-08 18:03:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:03:19,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:19,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:03:19,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:19,956 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 18:03:19,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash 547420074, now seen corresponding path program 1 times [2021-10-08 18:03:19,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:19,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138443024] [2021-10-08 18:03:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:19,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:19,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:19,961 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 18:03:19,962 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 18:03:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:20,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:03:20,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:20,259 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 18:03:20,259 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 46 treesize of output 78 [2021-10-08 18:03:20,265 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 163 treesize of output 159 [2021-10-08 18:03:21,015 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 18:03:21,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:21,076 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 18:03:21,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:21,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138443024] [2021-10-08 18:03:21,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138443024] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:21,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:21,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:03:21,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282713673] [2021-10-08 18:03:21,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:21,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:21,081 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:21,140 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-08 18:03:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:21,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:03:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:21,145 INFO L225 Difference]: With dead ends: 144 [2021-10-08 18:03:21,145 INFO L226 Difference]: Without dead ends: 144 [2021-10-08 18:03:21,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-08 18:03:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-08 18:03:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-08 18:03:21,170 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-08 18:03:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:21,171 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-08 18:03:21,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-08 18:03:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:03:21,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:21,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:21,190 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 18:03:21,372 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 18:03:21,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2084695223, now seen corresponding path program 1 times [2021-10-08 18:03:21,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:21,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506479677] [2021-10-08 18:03:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:21,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:21,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:21,377 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 18:03:21,378 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 18:03:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:03:21,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:21,661 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 18:03:21,662 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 18:03:22,189 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 18:03:22,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:22,210 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 18:03:22,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:22,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506479677] [2021-10-08 18:03:22,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506479677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:22,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:22,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:03:22,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766752167] [2021-10-08 18:03:22,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:03:22,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:03:22,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:22,213 INFO L87 Difference]: Start difference. First operand 144 states and 572 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 18:03:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:22,253 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-08 18:03:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 18:03:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:22,256 INFO L225 Difference]: With dead ends: 134 [2021-10-08 18:03:22,256 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 18:03:22,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 18:03:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-08 18:03:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-08 18:03:22,264 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-08 18:03:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:22,264 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-08 18:03:22,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 18:03:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-08 18:03:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:03:22,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:22,266 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:22,282 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 18:03:22,482 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 18:03:22,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:22,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:22,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2084695225, now seen corresponding path program 1 times [2021-10-08 18:03:22,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:22,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980549476] [2021-10-08 18:03:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:22,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:22,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:22,487 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 18:03:22,489 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 18:03:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:22,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:03:22,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:22,744 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 18:03:22,744 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 21 treesize of output 60 [2021-10-08 18:03:22,834 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 18:03:22,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:22,925 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 18:03:22,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:22,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980549476] [2021-10-08 18:03:22,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980549476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:22,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:22,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:03:22,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864169245] [2021-10-08 18:03:22,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:22,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:22,929 INFO L87 Difference]: Start difference. First operand 134 states and 536 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 18:03:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:22,967 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-08 18:03:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:22,967 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 18:03:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:22,970 INFO L225 Difference]: With dead ends: 124 [2021-10-08 18:03:22,970 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 18:03:22,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 18:03:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-08 18:03:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-08 18:03:22,977 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-08 18:03:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:22,977 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-08 18:03:22,977 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 18:03:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-08 18:03:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:03:22,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:22,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:22,989 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 18:03:23,186 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 18:03:23,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1937363690, now seen corresponding path program 1 times [2021-10-08 18:03:23,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:23,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938771152] [2021-10-08 18:03:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:23,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:23,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:23,191 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 18:03:23,192 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 18:03:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:23,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:03:23,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:23,509 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 18:03:23,510 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 18:03:24,001 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 18:03:24,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:24,092 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 18:03:24,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:24,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938771152] [2021-10-08 18:03:24,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938771152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:24,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:03:24,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522715557] [2021-10-08 18:03:24,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:03:24,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:03:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:03:24,095 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 18:03:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:24,141 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-08 18:03:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 9 [2021-10-08 18:03:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:24,144 INFO L225 Difference]: With dead ends: 108 [2021-10-08 18:03:24,144 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 18:03:24,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:03:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 18:03:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-08 18:03:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-08 18:03:24,150 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-08 18:03:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:24,151 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-08 18:03:24,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 18:03:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-08 18:03:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:03:24,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:24,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:24,165 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 18:03:24,364 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 18:03:24,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1937363692, now seen corresponding path program 1 times [2021-10-08 18:03:24,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:24,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404490557] [2021-10-08 18:03:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:24,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:24,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:24,372 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 18:03:24,373 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 18:03:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:24,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:03:24,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:24,590 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 18:03:24,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:24,696 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 18:03:24,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:24,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404490557] [2021-10-08 18:03:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404490557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:24,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:24,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:03:24,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182239979] [2021-10-08 18:03:24,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:03:24,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:03:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:24,699 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:24,733 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-08 18:03:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:24,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 18:03:24,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:24,736 INFO L225 Difference]: With dead ends: 92 [2021-10-08 18:03:24,736 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 18:03:24,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 18:03:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-08 18:03:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-08 18:03:24,741 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-08 18:03:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:24,741 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-08 18:03:24,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-08 18:03:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:03:24,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:24,743 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:24,761 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 18:03:24,954 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 18:03:24,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:24,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1521879548, now seen corresponding path program 1 times [2021-10-08 18:03:24,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:24,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785227682] [2021-10-08 18:03:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:24,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:24,959 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 18:03:24,961 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 18:03:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:25,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:03:25,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:25,120 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 18:03:25,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:25,176 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 18:03:25,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:25,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785227682] [2021-10-08 18:03:25,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785227682] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:03:25,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:25,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:03:25,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062970299] [2021-10-08 18:03:25,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:03:25,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:03:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:25,179 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:25,201 INFO L93 Difference]: Finished difference Result 181 states and 611 transitions. [2021-10-08 18:03:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:03:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 18:03:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:25,204 INFO L225 Difference]: With dead ends: 181 [2021-10-08 18:03:25,204 INFO L226 Difference]: Without dead ends: 152 [2021-10-08 18:03:25,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:03:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-08 18:03:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-08 18:03:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 3.4966887417218544) internal successors, (528), 151 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 528 transitions. [2021-10-08 18:03:25,215 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 528 transitions. Word has length 21 [2021-10-08 18:03:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:25,216 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 528 transitions. [2021-10-08 18:03:25,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 528 transitions. [2021-10-08 18:03:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:25,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:25,223 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] [2021-10-08 18:03:25,240 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 18:03:25,437 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 18:03:25,438 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash -668011427, now seen corresponding path program 1 times [2021-10-08 18:03:25,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:25,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197667167] [2021-10-08 18:03:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:25,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:25,442 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 18:03:25,443 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 18:03:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:25,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:25,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:25,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:25,894 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 18:03:25,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:25,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197667167] [2021-10-08 18:03:25,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197667167] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:03:25,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:03:25,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 18:03:25,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553969127] [2021-10-08 18:03:25,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:25,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:25,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:03:25,897 INFO L87 Difference]: Start difference. First operand 152 states and 528 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:25,973 INFO L93 Difference]: Finished difference Result 152 states and 492 transitions. [2021-10-08 18:03:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:03:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:25,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:25,988 INFO L225 Difference]: With dead ends: 152 [2021-10-08 18:03:25,988 INFO L226 Difference]: Without dead ends: 110 [2021-10-08 18:03:25,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-08 18:03:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-08 18:03:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 3.63302752293578) internal successors, (396), 109 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 396 transitions. [2021-10-08 18:03:25,996 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 396 transitions. Word has length 22 [2021-10-08 18:03:25,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:25,997 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 396 transitions. [2021-10-08 18:03:25,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 396 transitions. [2021-10-08 18:03:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:25,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:25,999 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] [2021-10-08 18:03:26,017 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 18:03:26,211 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 18:03:26,212 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1587679495, now seen corresponding path program 1 times [2021-10-08 18:03:26,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:26,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468326322] [2021-10-08 18:03:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:26,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:26,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:26,216 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 18:03:26,217 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 18:03:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:26,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:26,504 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 18:03:26,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:26,678 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 18:03:26,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:26,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468326322] [2021-10-08 18:03:26,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468326322] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:26,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:26,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 18:03:26,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679192331] [2021-10-08 18:03:26,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:03:26,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:03:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:26,681 INFO L87 Difference]: Start difference. First operand 110 states and 396 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:26,881 INFO L93 Difference]: Finished difference Result 532 states and 1950 transitions. [2021-10-08 18:03:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:03:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:26,887 INFO L225 Difference]: With dead ends: 532 [2021-10-08 18:03:26,888 INFO L226 Difference]: Without dead ends: 532 [2021-10-08 18:03:26,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:03:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-08 18:03:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 202. [2021-10-08 18:03:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 4.3283582089552235) internal successors, (870), 201 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 870 transitions. [2021-10-08 18:03:26,911 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 870 transitions. Word has length 22 [2021-10-08 18:03:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:26,911 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 870 transitions. [2021-10-08 18:03:26,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 870 transitions. [2021-10-08 18:03:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:26,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:26,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:26,926 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 18:03:27,126 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 18:03:27,126 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:27,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1743600199, now seen corresponding path program 2 times [2021-10-08 18:03:27,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:27,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702429412] [2021-10-08 18:03:27,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:27,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:27,130 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 18:03:27,136 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 18:03:27,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:27,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:27,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:27,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:27,562 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 18:03:27,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:27,758 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 18:03:27,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:27,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702429412] [2021-10-08 18:03:27,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702429412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:27,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:27,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 18:03:27,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237572505] [2021-10-08 18:03:27,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:03:27,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:03:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:27,761 INFO L87 Difference]: Start difference. First operand 202 states and 870 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:27,918 INFO L93 Difference]: Finished difference Result 736 states and 3034 transitions. [2021-10-08 18:03:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:03:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:27,927 INFO L225 Difference]: With dead ends: 736 [2021-10-08 18:03:27,927 INFO L226 Difference]: Without dead ends: 736 [2021-10-08 18:03:27,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:03:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-08 18:03:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 352. [2021-10-08 18:03:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 4.769230769230769) internal successors, (1674), 351 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1674 transitions. [2021-10-08 18:03:27,952 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1674 transitions. Word has length 22 [2021-10-08 18:03:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:27,953 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 1674 transitions. [2021-10-08 18:03:27,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1674 transitions. [2021-10-08 18:03:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:27,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:27,955 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] [2021-10-08 18:03:27,969 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 18:03:28,169 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 18:03:28,170 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash -103768713, now seen corresponding path program 2 times [2021-10-08 18:03:28,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:28,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957678975] [2021-10-08 18:03:28,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:28,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:28,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:28,172 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 18:03:28,178 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 18:03:28,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:28,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:28,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:28,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:28,688 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 18:03:28,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:28,929 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 18:03:28,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:28,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957678975] [2021-10-08 18:03:28,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957678975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:28,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:28,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 18:03:28,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177280422] [2021-10-08 18:03:28,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:03:28,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:03:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:28,932 INFO L87 Difference]: Start difference. First operand 352 states and 1674 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:29,118 INFO L93 Difference]: Finished difference Result 1258 states and 5658 transitions. [2021-10-08 18:03:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:03:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:29,136 INFO L225 Difference]: With dead ends: 1258 [2021-10-08 18:03:29,136 INFO L226 Difference]: Without dead ends: 1258 [2021-10-08 18:03:29,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:03:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-10-08 18:03:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 554. [2021-10-08 18:03:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 5.394213381555153) internal successors, (2983), 553 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2983 transitions. [2021-10-08 18:03:29,178 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2983 transitions. Word has length 22 [2021-10-08 18:03:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:29,178 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2983 transitions. [2021-10-08 18:03:29,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2983 transitions. [2021-10-08 18:03:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:29,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:29,182 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] [2021-10-08 18:03:29,199 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 18:03:29,395 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 18:03:29,395 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:29,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1802789577, now seen corresponding path program 3 times [2021-10-08 18:03:29,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:29,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715034798] [2021-10-08 18:03:29,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:29,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:29,399 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 18:03:29,400 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 18:03:29,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:03:29,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:29,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:30,030 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 18:03:30,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:30,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715034798] [2021-10-08 18:03:30,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715034798] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:03:30,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:03:30,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 18:03:30,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047157990] [2021-10-08 18:03:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:03:30,032 INFO L87 Difference]: Start difference. First operand 554 states and 2983 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:30,113 INFO L93 Difference]: Finished difference Result 664 states and 3308 transitions. [2021-10-08 18:03:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:03:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:30,139 INFO L225 Difference]: With dead ends: 664 [2021-10-08 18:03:30,140 INFO L226 Difference]: Without dead ends: 602 [2021-10-08 18:03:30,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-08 18:03:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 570. [2021-10-08 18:03:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 5.263620386643233) internal successors, (2995), 569 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 2995 transitions. [2021-10-08 18:03:30,170 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 2995 transitions. Word has length 22 [2021-10-08 18:03:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:30,171 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 2995 transitions. [2021-10-08 18:03:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 2995 transitions. [2021-10-08 18:03:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 18:03:30,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:30,175 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] [2021-10-08 18:03:30,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:30,388 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 18:03:30,389 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1791113141, now seen corresponding path program 3 times [2021-10-08 18:03:30,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:30,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580632510] [2021-10-08 18:03:30,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:30,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:30,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:30,393 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 18:03:30,404 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 18:03:30,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:03:30,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:30,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:30,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:31,044 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 18:03:31,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:31,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580632510] [2021-10-08 18:03:31,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580632510] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:03:31,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:03:31,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 18:03:31,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682155641] [2021-10-08 18:03:31,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:31,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:03:31,046 INFO L87 Difference]: Start difference. First operand 570 states and 2995 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:31,110 INFO L93 Difference]: Finished difference Result 608 states and 3092 transitions. [2021-10-08 18:03:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:03:31,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 18:03:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:31,118 INFO L225 Difference]: With dead ends: 608 [2021-10-08 18:03:31,118 INFO L226 Difference]: Without dead ends: 550 [2021-10-08 18:03:31,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-08 18:03:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2021-10-08 18:03:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 5.222222222222222) internal successors, (2867), 549 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 2867 transitions. [2021-10-08 18:03:31,144 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 2867 transitions. Word has length 22 [2021-10-08 18:03:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:31,145 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 2867 transitions. [2021-10-08 18:03:31,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 2867 transitions. [2021-10-08 18:03:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:03:31,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:31,148 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] [2021-10-08 18:03:31,164 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 18:03:31,361 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 18:03:31,361 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash 945277358, now seen corresponding path program 1 times [2021-10-08 18:03:31,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:31,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368606864] [2021-10-08 18:03:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:31,364 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:31,365 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 18:03:31,371 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 18:03:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:31,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:03:31,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:31,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:31,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:31,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368606864] [2021-10-08 18:03:31,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368606864] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:31,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:31,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 18:03:31,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066588778] [2021-10-08 18:03:31,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:31,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:31,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:31,702 INFO L87 Difference]: Start difference. First operand 550 states and 2867 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 18:03:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:31,768 INFO L93 Difference]: Finished difference Result 1283 states and 6063 transitions. [2021-10-08 18:03:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:03:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 23 [2021-10-08 18:03:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:31,782 INFO L225 Difference]: With dead ends: 1283 [2021-10-08 18:03:31,782 INFO L226 Difference]: Without dead ends: 1202 [2021-10-08 18:03:31,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:03:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-10-08 18:03:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1120. [2021-10-08 18:03:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 4.861483467381591) internal successors, (5440), 1119 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 5440 transitions. [2021-10-08 18:03:31,863 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 5440 transitions. Word has length 23 [2021-10-08 18:03:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:31,864 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 5440 transitions. [2021-10-08 18:03:31,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 18:03:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 5440 transitions. [2021-10-08 18:03:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:03:31,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:31,873 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 18:03:31,889 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 18:03:32,086 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 18:03:32,087 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:32,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:32,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1805301455, now seen corresponding path program 1 times [2021-10-08 18:03:32,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:32,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723957544] [2021-10-08 18:03:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:32,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:32,092 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 18:03:32,094 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 18:03:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:32,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:03:32,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:32,461 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 18:03:32,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:32,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:32,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723957544] [2021-10-08 18:03:32,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723957544] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:03:32,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:03:32,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-08 18:03:32,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595735493] [2021-10-08 18:03:32,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:03:32,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:03:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:03:32,672 INFO L87 Difference]: Start difference. First operand 1120 states and 5440 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:32,758 INFO L93 Difference]: Finished difference Result 1126 states and 5422 transitions. [2021-10-08 18:03:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:03:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:03:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:32,771 INFO L225 Difference]: With dead ends: 1126 [2021-10-08 18:03:32,772 INFO L226 Difference]: Without dead ends: 1104 [2021-10-08 18:03:32,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:03:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-08 18:03:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2021-10-08 18:03:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 4.86219401631913) internal successors, (5363), 1103 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 5363 transitions. [2021-10-08 18:03:32,822 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 5363 transitions. Word has length 24 [2021-10-08 18:03:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:32,824 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 5363 transitions. [2021-10-08 18:03:32,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 5363 transitions. [2021-10-08 18:03:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:03:32,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:32,832 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:32,851 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 18:03:33,045 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 18:03:33,046 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:33,047 INFO L82 PathProgramCache]: Analyzing trace with hash 363437079, now seen corresponding path program 1 times [2021-10-08 18:03:33,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:33,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475250813] [2021-10-08 18:03:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:33,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:33,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:33,049 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 18:03:33,056 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 18:03:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:33,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:03:33,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:33,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:33,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:33,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475250813] [2021-10-08 18:03:33,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475250813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:33,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:33,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:03:33,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634093711] [2021-10-08 18:03:33,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:03:33,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:03:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:03:33,852 INFO L87 Difference]: Start difference. First operand 1104 states and 5363 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:34,190 INFO L93 Difference]: Finished difference Result 2574 states and 11119 transitions. [2021-10-08 18:03:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:03:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:03:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:34,217 INFO L225 Difference]: With dead ends: 2574 [2021-10-08 18:03:34,217 INFO L226 Difference]: Without dead ends: 2526 [2021-10-08 18:03:34,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 200.4ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-10-08 18:03:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1452. [2021-10-08 18:03:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 4.851137146795313) internal successors, (7039), 1451 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 7039 transitions. [2021-10-08 18:03:34,303 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 7039 transitions. Word has length 24 [2021-10-08 18:03:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:34,303 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 7039 transitions. [2021-10-08 18:03:34,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 7039 transitions. [2021-10-08 18:03:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:03:34,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:34,310 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 18:03:34,324 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 18:03:34,523 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 18:03:34,524 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1561218207, now seen corresponding path program 2 times [2021-10-08 18:03:34,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:34,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490190636] [2021-10-08 18:03:34,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:34,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:34,528 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 18:03:34,538 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 18:03:34,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:34,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:03:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:35,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:35,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:35,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490190636] [2021-10-08 18:03:35,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490190636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:35,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:35,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-08 18:03:35,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94097380] [2021-10-08 18:03:35,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 18:03:35,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:35,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 18:03:35,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:03:35,470 INFO L87 Difference]: Start difference. First operand 1452 states and 7039 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:36,129 INFO L93 Difference]: Finished difference Result 3386 states and 14760 transitions. [2021-10-08 18:03:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:03:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:03:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:36,162 INFO L225 Difference]: With dead ends: 3386 [2021-10-08 18:03:36,163 INFO L226 Difference]: Without dead ends: 3358 [2021-10-08 18:03:36,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 457.2ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:03:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-10-08 18:03:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 1812. [2021-10-08 18:03:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1811 states have (on average 4.9491993373826615) internal successors, (8963), 1811 states have internal predecessors, (8963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 8963 transitions. [2021-10-08 18:03:36,274 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 8963 transitions. Word has length 24 [2021-10-08 18:03:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:36,274 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 8963 transitions. [2021-10-08 18:03:36,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 8963 transitions. [2021-10-08 18:03:36,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:03:36,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:36,283 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 18:03:36,297 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 18:03:36,496 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 18:03:36,497 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:36,498 INFO L82 PathProgramCache]: Analyzing trace with hash 748623753, now seen corresponding path program 1 times [2021-10-08 18:03:36,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:36,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289173991] [2021-10-08 18:03:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:03:36,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:36,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:36,501 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 18:03:36,502 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 18:03:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:36,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:03:36,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:36,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:36,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:36,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289173991] [2021-10-08 18:03:36,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289173991] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:36,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:36,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-08 18:03:36,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980364557] [2021-10-08 18:03:36,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:03:36,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:03:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:03:36,921 INFO L87 Difference]: Start difference. First operand 1812 states and 8963 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:37,028 INFO L93 Difference]: Finished difference Result 3517 states and 16969 transitions. [2021-10-08 18:03:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:03:37,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:03:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:37,054 INFO L225 Difference]: With dead ends: 3517 [2021-10-08 18:03:37,055 INFO L226 Difference]: Without dead ends: 3316 [2021-10-08 18:03:37,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:03:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2021-10-08 18:03:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2364. [2021-10-08 18:03:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 5.0215827338129495) internal successors, (11866), 2363 states have internal predecessors, (11866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 11866 transitions. [2021-10-08 18:03:37,164 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 11866 transitions. Word has length 25 [2021-10-08 18:03:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:37,165 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 11866 transitions. [2021-10-08 18:03:37,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 11866 transitions. [2021-10-08 18:03:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:37,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:37,177 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:37,193 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 18:03:37,391 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 18:03:37,391 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:37,392 INFO L82 PathProgramCache]: Analyzing trace with hash 956289468, now seen corresponding path program 2 times [2021-10-08 18:03:37,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:37,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189404782] [2021-10-08 18:03:37,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:37,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:37,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:37,395 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 18:03:37,396 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 18:03:37,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:37,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:37,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:03:37,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:38,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:38,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:38,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189404782] [2021-10-08 18:03:38,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189404782] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:38,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:38,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:03:38,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076975710] [2021-10-08 18:03:38,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:03:38,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:03:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:38,500 INFO L87 Difference]: Start difference. First operand 2364 states and 11866 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:39,565 INFO L93 Difference]: Finished difference Result 5456 states and 23551 transitions. [2021-10-08 18:03:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:03:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:39,598 INFO L225 Difference]: With dead ends: 5456 [2021-10-08 18:03:39,598 INFO L226 Difference]: Without dead ends: 5364 [2021-10-08 18:03:39,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 806.3ms TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:03:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2021-10-08 18:03:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 2270. [2021-10-08 18:03:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2269 states have (on average 4.899515204936095) internal successors, (11117), 2269 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 11117 transitions. [2021-10-08 18:03:39,773 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 11117 transitions. Word has length 26 [2021-10-08 18:03:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:39,774 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 11117 transitions. [2021-10-08 18:03:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 11117 transitions. [2021-10-08 18:03:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:39,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:39,784 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:39,800 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 18:03:39,997 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 18:03:39,998 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:39,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:39,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2061881588, now seen corresponding path program 3 times [2021-10-08 18:03:40,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:40,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535886649] [2021-10-08 18:03:40,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:40,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:40,002 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 18:03:40,003 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 18:03:40,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:03:40,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:40,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:03:40,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:40,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:40,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:40,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535886649] [2021-10-08 18:03:40,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535886649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:40,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:40,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:03:40,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462174124] [2021-10-08 18:03:40,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:03:40,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:03:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:03:40,900 INFO L87 Difference]: Start difference. First operand 2270 states and 11117 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:41,502 INFO L93 Difference]: Finished difference Result 4146 states and 18252 transitions. [2021-10-08 18:03:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:03:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:41,530 INFO L225 Difference]: With dead ends: 4146 [2021-10-08 18:03:41,530 INFO L226 Difference]: Without dead ends: 3814 [2021-10-08 18:03:41,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 471.5ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:03:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2021-10-08 18:03:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 2714. [2021-10-08 18:03:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 4.845558422410615) internal successors, (13146), 2713 states have internal predecessors, (13146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 13146 transitions. [2021-10-08 18:03:41,695 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 13146 transitions. Word has length 26 [2021-10-08 18:03:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:41,695 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 13146 transitions. [2021-10-08 18:03:41,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 13146 transitions. [2021-10-08 18:03:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:41,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:41,709 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:41,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:41,923 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 18:03:41,924 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1314407570, now seen corresponding path program 4 times [2021-10-08 18:03:41,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:41,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624710086] [2021-10-08 18:03:41,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:03:41,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:41,927 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 18:03:41,928 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 18:03:42,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:03:42,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:42,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:03:42,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:42,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:42,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:42,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624710086] [2021-10-08 18:03:42,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624710086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:42,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:42,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:03:42,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010862520] [2021-10-08 18:03:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:03:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:03:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:03:42,728 INFO L87 Difference]: Start difference. First operand 2714 states and 13146 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:43,045 INFO L93 Difference]: Finished difference Result 6544 states and 28576 transitions. [2021-10-08 18:03:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:03:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:43,077 INFO L225 Difference]: With dead ends: 6544 [2021-10-08 18:03:43,077 INFO L226 Difference]: Without dead ends: 6394 [2021-10-08 18:03:43,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 187.8ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2021-10-08 18:03:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 3056. [2021-10-08 18:03:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 3055 states have (on average 4.88379705400982) internal successors, (14920), 3055 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 14920 transitions. [2021-10-08 18:03:43,331 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 14920 transitions. Word has length 26 [2021-10-08 18:03:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:43,332 INFO L470 AbstractCegarLoop]: Abstraction has 3056 states and 14920 transitions. [2021-10-08 18:03:43,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 14920 transitions. [2021-10-08 18:03:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:43,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:43,345 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:43,363 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 18:03:43,559 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 18:03:43,560 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:43,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:43,561 INFO L82 PathProgramCache]: Analyzing trace with hash 452225682, now seen corresponding path program 5 times [2021-10-08 18:03:43,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:43,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421816210] [2021-10-08 18:03:43,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:03:43,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:43,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:43,565 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 18:03:43,567 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 18:03:43,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:03:43,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:43,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:03:43,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:44,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:45,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:45,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421816210] [2021-10-08 18:03:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421816210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:45,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:45,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:03:45,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452986189] [2021-10-08 18:03:45,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:03:45,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:03:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:03:45,105 INFO L87 Difference]: Start difference. First operand 3056 states and 14920 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:46,670 INFO L93 Difference]: Finished difference Result 6432 states and 30913 transitions. [2021-10-08 18:03:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:03:46,672 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:46,693 INFO L225 Difference]: With dead ends: 6432 [2021-10-08 18:03:46,694 INFO L226 Difference]: Without dead ends: 6122 [2021-10-08 18:03:46,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1512.6ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2021-10-08 18:03:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 3874. [2021-10-08 18:03:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 5.166537567776917) internal successors, (20010), 3873 states have internal predecessors, (20010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 20010 transitions. [2021-10-08 18:03:46,928 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 20010 transitions. Word has length 26 [2021-10-08 18:03:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:46,928 INFO L470 AbstractCegarLoop]: Abstraction has 3874 states and 20010 transitions. [2021-10-08 18:03:46,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 20010 transitions. [2021-10-08 18:03:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:46,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:46,947 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:46,963 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 18:03:47,160 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 18:03:47,161 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -593407252, now seen corresponding path program 6 times [2021-10-08 18:03:47,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:47,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447603990] [2021-10-08 18:03:47,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:03:47,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:47,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:47,165 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 18:03:47,206 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 18:03:47,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:03:47,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:47,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:03:47,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:47,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:48,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:48,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447603990] [2021-10-08 18:03:48,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447603990] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:48,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:48,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:03:48,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8696304] [2021-10-08 18:03:48,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:03:48,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:03:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:48,489 INFO L87 Difference]: Start difference. First operand 3874 states and 20010 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:50,046 INFO L93 Difference]: Finished difference Result 9628 states and 43077 transitions. [2021-10-08 18:03:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:03:50,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:50,079 INFO L225 Difference]: With dead ends: 9628 [2021-10-08 18:03:50,079 INFO L226 Difference]: Without dead ends: 9506 [2021-10-08 18:03:50,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1339.1ms TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:03:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2021-10-08 18:03:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 4024. [2021-10-08 18:03:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4023 states have (on average 5.16728809346259) internal successors, (20788), 4023 states have internal predecessors, (20788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 20788 transitions. [2021-10-08 18:03:50,369 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 20788 transitions. Word has length 26 [2021-10-08 18:03:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:50,371 INFO L470 AbstractCegarLoop]: Abstraction has 4024 states and 20788 transitions. [2021-10-08 18:03:50,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 20788 transitions. [2021-10-08 18:03:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:50,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:50,388 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:50,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 18:03:50,602 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 18:03:50,602 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1443301672, now seen corresponding path program 7 times [2021-10-08 18:03:50,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:50,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237164306] [2021-10-08 18:03:50,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:03:50,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:50,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:50,606 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 18:03:50,608 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 18:03:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:50,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:03:50,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:51,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:03:51,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:51,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237164306] [2021-10-08 18:03:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237164306] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:51,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:03:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59996220] [2021-10-08 18:03:51,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:03:51,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:03:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:03:51,551 INFO L87 Difference]: Start difference. First operand 4024 states and 20788 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:51,821 INFO L93 Difference]: Finished difference Result 5020 states and 24697 transitions. [2021-10-08 18:03:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:03:51,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:51,838 INFO L225 Difference]: With dead ends: 5020 [2021-10-08 18:03:51,839 INFO L226 Difference]: Without dead ends: 4714 [2021-10-08 18:03:51,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 245.1ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:03:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2021-10-08 18:03:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4172. [2021-10-08 18:03:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 4171 states have (on average 5.101414528889954) internal successors, (21278), 4171 states have internal predecessors, (21278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 21278 transitions. [2021-10-08 18:03:52,083 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 21278 transitions. Word has length 26 [2021-10-08 18:03:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:52,083 INFO L470 AbstractCegarLoop]: Abstraction has 4172 states and 21278 transitions. [2021-10-08 18:03:52,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 21278 transitions. [2021-10-08 18:03:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:52,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:52,108 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:52,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 18:03:52,323 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 18:03:52,323 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:52,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:52,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1466942288, now seen corresponding path program 8 times [2021-10-08 18:03:52,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:52,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151022354] [2021-10-08 18:03:52,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:52,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:52,327 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 18:03:52,330 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 18:03:52,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:52,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:52,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:03:52,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:53,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:53,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:53,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151022354] [2021-10-08 18:03:53,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151022354] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:53,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:53,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:03:53,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769480952] [2021-10-08 18:03:53,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:03:53,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:03:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:53,519 INFO L87 Difference]: Start difference. First operand 4172 states and 21278 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:53,978 INFO L93 Difference]: Finished difference Result 5642 states and 26783 transitions. [2021-10-08 18:03:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:03:53,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:53,997 INFO L225 Difference]: With dead ends: 5642 [2021-10-08 18:03:53,998 INFO L226 Difference]: Without dead ends: 5374 [2021-10-08 18:03:53,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 381.7ms TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:03:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-10-08 18:03:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4016. [2021-10-08 18:03:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4015 states have (on average 5.027895392278954) internal successors, (20187), 4015 states have internal predecessors, (20187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 20187 transitions. [2021-10-08 18:03:54,202 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 20187 transitions. Word has length 26 [2021-10-08 18:03:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:54,202 INFO L470 AbstractCegarLoop]: Abstraction has 4016 states and 20187 transitions. [2021-10-08 18:03:54,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 20187 transitions. [2021-10-08 18:03:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:54,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:54,221 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:54,240 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 18:03:54,434 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 18:03:54,435 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1189925066, now seen corresponding path program 9 times [2021-10-08 18:03:54,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:54,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011349628] [2021-10-08 18:03:54,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:54,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:54,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:54,439 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 18:03:54,439 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 18:03:54,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:03:54,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:54,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:03:54,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:55,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:55,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:55,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011349628] [2021-10-08 18:03:55,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011349628] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:55,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:55,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:03:55,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587750370] [2021-10-08 18:03:55,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:03:55,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:03:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:55,494 INFO L87 Difference]: Start difference. First operand 4016 states and 20187 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:56,671 INFO L93 Difference]: Finished difference Result 9976 states and 44151 transitions. [2021-10-08 18:03:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:03:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:56,707 INFO L225 Difference]: With dead ends: 9976 [2021-10-08 18:03:56,708 INFO L226 Difference]: Without dead ends: 9854 [2021-10-08 18:03:56,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 870.4ms TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:03:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9854 states. [2021-10-08 18:03:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9854 to 4688. [2021-10-08 18:03:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4688 states, 4687 states have (on average 5.141455088542778) internal successors, (24098), 4687 states have internal predecessors, (24098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 24098 transitions. [2021-10-08 18:03:56,979 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 24098 transitions. Word has length 26 [2021-10-08 18:03:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:56,980 INFO L470 AbstractCegarLoop]: Abstraction has 4688 states and 24098 transitions. [2021-10-08 18:03:56,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 24098 transitions. [2021-10-08 18:03:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:57,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:57,003 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:57,018 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 18:03:57,216 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 18:03:57,217 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:57,218 INFO L82 PathProgramCache]: Analyzing trace with hash -81783782, now seen corresponding path program 10 times [2021-10-08 18:03:57,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:57,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260966047] [2021-10-08 18:03:57,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:03:57,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:57,220 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:57,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:03:57,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:03:57,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:57,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:03:57,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:57,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:03:58,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:58,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260966047] [2021-10-08 18:03:58,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260966047] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:58,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:58,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:03:58,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973564345] [2021-10-08 18:03:58,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:03:58,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:03:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:03:58,400 INFO L87 Difference]: Start difference. First operand 4688 states and 24098 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:59,206 INFO L93 Difference]: Finished difference Result 7614 states and 37457 transitions. [2021-10-08 18:03:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:03:59,207 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:03:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:59,233 INFO L225 Difference]: With dead ends: 7614 [2021-10-08 18:03:59,233 INFO L226 Difference]: Without dead ends: 7490 [2021-10-08 18:03:59,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 664.8ms TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:03:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7490 states. [2021-10-08 18:03:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7490 to 5028. [2021-10-08 18:03:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 5.151382534314701) internal successors, (25896), 5027 states have internal predecessors, (25896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 25896 transitions. [2021-10-08 18:03:59,403 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 25896 transitions. Word has length 26 [2021-10-08 18:03:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:59,403 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 25896 transitions. [2021-10-08 18:03:59,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 25896 transitions. [2021-10-08 18:03:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:03:59,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:59,459 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:59,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:59,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:59,660 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:59,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:59,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1185925394, now seen corresponding path program 11 times [2021-10-08 18:03:59,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:59,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087947961] [2021-10-08 18:03:59,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:03:59,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:59,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:59,664 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:59,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:04:00,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:04:00,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:04:00,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:00,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:01,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:01,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087947961] [2021-10-08 18:04:01,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087947961] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:01,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:01,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:04:01,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105210615] [2021-10-08 18:04:01,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:04:01,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:04:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:04:01,320 INFO L87 Difference]: Start difference. First operand 5028 states and 25896 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:02,997 INFO L93 Difference]: Finished difference Result 11894 states and 57359 transitions. [2021-10-08 18:04:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:04:02,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:04:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:03,041 INFO L225 Difference]: With dead ends: 11894 [2021-10-08 18:04:03,041 INFO L226 Difference]: Without dead ends: 11832 [2021-10-08 18:04:03,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1485.6ms TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:04:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11832 states. [2021-10-08 18:04:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11832 to 6160. [2021-10-08 18:04:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 5.354440655950642) internal successors, (32978), 6159 states have internal predecessors, (32978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 32978 transitions. [2021-10-08 18:04:03,364 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 32978 transitions. Word has length 26 [2021-10-08 18:04:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:03,364 INFO L470 AbstractCegarLoop]: Abstraction has 6160 states and 32978 transitions. [2021-10-08 18:04:03,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 32978 transitions. [2021-10-08 18:04:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:04:03,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:03,386 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:03,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 18:04:03,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:03,590 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1898214358, now seen corresponding path program 12 times [2021-10-08 18:04:03,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:03,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031646235] [2021-10-08 18:04:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:04:03,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:03,594 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:03,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:04:04,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:04:04,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:04,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:04,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:04,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:05,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:05,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031646235] [2021-10-08 18:04:05,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031646235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:05,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:05,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:04:05,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363340006] [2021-10-08 18:04:05,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:04:05,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:04:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:04:05,275 INFO L87 Difference]: Start difference. First operand 6160 states and 32978 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:07,344 INFO L93 Difference]: Finished difference Result 13206 states and 64033 transitions. [2021-10-08 18:04:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:04:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:04:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:07,416 INFO L225 Difference]: With dead ends: 13206 [2021-10-08 18:04:07,417 INFO L226 Difference]: Without dead ends: 13160 [2021-10-08 18:04:07,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1718.1ms TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:04:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13160 states. [2021-10-08 18:04:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13160 to 6468. [2021-10-08 18:04:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6468 states, 6467 states have (on average 5.392917890830369) internal successors, (34876), 6467 states have internal predecessors, (34876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6468 states to 6468 states and 34876 transitions. [2021-10-08 18:04:07,905 INFO L78 Accepts]: Start accepts. Automaton has 6468 states and 34876 transitions. Word has length 26 [2021-10-08 18:04:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:07,905 INFO L470 AbstractCegarLoop]: Abstraction has 6468 states and 34876 transitions. [2021-10-08 18:04:07,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6468 states and 34876 transitions. [2021-10-08 18:04:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:04:07,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:07,926 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:07,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-08 18:04:08,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:08,127 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1737127701, now seen corresponding path program 3 times [2021-10-08 18:04:08,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:08,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117318330] [2021-10-08 18:04:08,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:04:08,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:08,131 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:08,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:04:08,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:04:08,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:08,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:04:08,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:08,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:09,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:09,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117318330] [2021-10-08 18:04:09,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117318330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:09,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:09,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:09,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500598726] [2021-10-08 18:04:09,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:09,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:09,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:09,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:09,760 INFO L87 Difference]: Start difference. First operand 6468 states and 34876 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:11,113 INFO L93 Difference]: Finished difference Result 8326 states and 43933 transitions. [2021-10-08 18:04:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:04:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:04:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:11,145 INFO L225 Difference]: With dead ends: 8326 [2021-10-08 18:04:11,146 INFO L226 Difference]: Without dead ends: 8326 [2021-10-08 18:04:11,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1104.1ms TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:04:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-10-08 18:04:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 7442. [2021-10-08 18:04:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7442 states, 7441 states have (on average 5.371993011691977) internal successors, (39973), 7441 states have internal predecessors, (39973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 39973 transitions. [2021-10-08 18:04:11,471 INFO L78 Accepts]: Start accepts. Automaton has 7442 states and 39973 transitions. Word has length 26 [2021-10-08 18:04:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:11,472 INFO L470 AbstractCegarLoop]: Abstraction has 7442 states and 39973 transitions. [2021-10-08 18:04:11,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7442 states and 39973 transitions. [2021-10-08 18:04:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:04:11,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:11,509 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:11,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:11,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:11,723 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:11,723 INFO L82 PathProgramCache]: Analyzing trace with hash -88914640, now seen corresponding path program 13 times [2021-10-08 18:04:11,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:11,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685045905] [2021-10-08 18:04:11,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:04:11,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:11,804 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:11,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:04:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:04:12,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:04:12,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:12,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:13,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:13,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685045905] [2021-10-08 18:04:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685045905] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:13,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:13,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:13,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364490968] [2021-10-08 18:04:13,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:13,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:13,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:13,195 INFO L87 Difference]: Start difference. First operand 7442 states and 39973 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:14,269 INFO L93 Difference]: Finished difference Result 12604 states and 62100 transitions. [2021-10-08 18:04:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:04:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:04:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:14,356 INFO L225 Difference]: With dead ends: 12604 [2021-10-08 18:04:14,356 INFO L226 Difference]: Without dead ends: 12438 [2021-10-08 18:04:14,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 767.5ms TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:04:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2021-10-08 18:04:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 7508. [2021-10-08 18:04:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7508 states, 7507 states have (on average 5.407353137072066) internal successors, (40593), 7507 states have internal predecessors, (40593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7508 states to 7508 states and 40593 transitions. [2021-10-08 18:04:14,788 INFO L78 Accepts]: Start accepts. Automaton has 7508 states and 40593 transitions. Word has length 26 [2021-10-08 18:04:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:14,789 INFO L470 AbstractCegarLoop]: Abstraction has 7508 states and 40593 transitions. [2021-10-08 18:04:14,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7508 states and 40593 transitions. [2021-10-08 18:04:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 18:04:14,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:14,811 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:14,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:15,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:15,014 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1152370084, now seen corresponding path program 14 times [2021-10-08 18:04:15,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:15,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583434654] [2021-10-08 18:04:15,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:04:15,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:15,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:15,017 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:15,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:04:15,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:15,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:04:15,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:15,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:16,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:16,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583434654] [2021-10-08 18:04:16,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583434654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:16,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:16,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:16,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541570807] [2021-10-08 18:04:16,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:16,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:16,321 INFO L87 Difference]: Start difference. First operand 7508 states and 40593 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:17,514 INFO L93 Difference]: Finished difference Result 9580 states and 48563 transitions. [2021-10-08 18:04:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:04:17,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 18:04:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:17,551 INFO L225 Difference]: With dead ends: 9580 [2021-10-08 18:04:17,552 INFO L226 Difference]: Without dead ends: 9508 [2021-10-08 18:04:17,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 920.8ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:04:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2021-10-08 18:04:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 7584. [2021-10-08 18:04:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 5.399709877357246) internal successors, (40946), 7583 states have internal predecessors, (40946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 40946 transitions. [2021-10-08 18:04:17,881 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 40946 transitions. Word has length 26 [2021-10-08 18:04:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:17,882 INFO L470 AbstractCegarLoop]: Abstraction has 7584 states and 40946 transitions. [2021-10-08 18:04:17,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 40946 transitions. [2021-10-08 18:04:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:04:17,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:17,903 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:17,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:18,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:18,104 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:18,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1627136439, now seen corresponding path program 15 times [2021-10-08 18:04:18,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:18,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797650166] [2021-10-08 18:04:18,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:04:18,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:18,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:18,107 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:18,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:04:18,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:04:18,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:18,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:04:18,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:18,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:19,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:19,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797650166] [2021-10-08 18:04:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797650166] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:19,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:19,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:19,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511589676] [2021-10-08 18:04:19,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:19,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:19,282 INFO L87 Difference]: Start difference. First operand 7584 states and 40946 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 18:04:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:20,124 INFO L93 Difference]: Finished difference Result 11686 states and 58029 transitions. [2021-10-08 18:04:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:04:20,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 27 [2021-10-08 18:04:20,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:20,169 INFO L225 Difference]: With dead ends: 11686 [2021-10-08 18:04:20,170 INFO L226 Difference]: Without dead ends: 11620 [2021-10-08 18:04:20,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 736.7ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:04:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-10-08 18:04:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 9360. [2021-10-08 18:04:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9360 states, 9359 states have (on average 5.306656694091249) internal successors, (49665), 9359 states have internal predecessors, (49665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 49665 transitions. [2021-10-08 18:04:20,587 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 49665 transitions. Word has length 27 [2021-10-08 18:04:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:20,587 INFO L470 AbstractCegarLoop]: Abstraction has 9360 states and 49665 transitions. [2021-10-08 18:04:20,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 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 18:04:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 49665 transitions. [2021-10-08 18:04:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:04:20,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:20,613 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:20,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:20,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:20,814 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1367674549, now seen corresponding path program 16 times [2021-10-08 18:04:20,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:20,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427781709] [2021-10-08 18:04:20,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:20,817 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:20,818 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:20,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:04:21,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:04:21,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:21,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:04:21,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:21,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:21,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:21,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427781709] [2021-10-08 18:04:21,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427781709] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:21,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:21,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-08 18:04:21,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317058799] [2021-10-08 18:04:21,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:04:21,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:04:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:04:21,451 INFO L87 Difference]: Start difference. First operand 9360 states and 49665 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:21,846 INFO L93 Difference]: Finished difference Result 17277 states and 88845 transitions. [2021-10-08 18:04:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:04:21,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:04:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:21,930 INFO L225 Difference]: With dead ends: 17277 [2021-10-08 18:04:21,930 INFO L226 Difference]: Without dead ends: 16976 [2021-10-08 18:04:21,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:04:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16976 states. [2021-10-08 18:04:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16976 to 11532. [2021-10-08 18:04:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 5.36744428063481) internal successors, (61892), 11531 states have internal predecessors, (61892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 61892 transitions. [2021-10-08 18:04:22,578 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 61892 transitions. Word has length 27 [2021-10-08 18:04:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:22,579 INFO L470 AbstractCegarLoop]: Abstraction has 11532 states and 61892 transitions. [2021-10-08 18:04:22,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 61892 transitions. [2021-10-08 18:04:22,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:04:22,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:22,611 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:22,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:22,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:22,812 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1343849208, now seen corresponding path program 4 times [2021-10-08 18:04:22,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:22,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665077273] [2021-10-08 18:04:22,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:22,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:22,820 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:22,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:04:23,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:04:23,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:23,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:04:23,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:23,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:24,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:24,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665077273] [2021-10-08 18:04:24,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665077273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:24,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:24,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:24,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784617411] [2021-10-08 18:04:24,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:24,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:24,347 INFO L87 Difference]: Start difference. First operand 11532 states and 61892 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:25,750 INFO L93 Difference]: Finished difference Result 22016 states and 109853 transitions. [2021-10-08 18:04:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:04:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:04:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:25,846 INFO L225 Difference]: With dead ends: 22016 [2021-10-08 18:04:25,846 INFO L226 Difference]: Without dead ends: 21924 [2021-10-08 18:04:25,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 944.3ms TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:04:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2021-10-08 18:04:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 13694. [2021-10-08 18:04:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13694 states, 13693 states have (on average 5.427590739794056) internal successors, (74320), 13693 states have internal predecessors, (74320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13694 states to 13694 states and 74320 transitions. [2021-10-08 18:04:26,704 INFO L78 Accepts]: Start accepts. Automaton has 13694 states and 74320 transitions. Word has length 27 [2021-10-08 18:04:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:26,705 INFO L470 AbstractCegarLoop]: Abstraction has 13694 states and 74320 transitions. [2021-10-08 18:04:26,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13694 states and 74320 transitions. [2021-10-08 18:04:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:26,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:26,768 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:26,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-08 18:04:26,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:26,983 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1488732476, now seen corresponding path program 17 times [2021-10-08 18:04:26,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:26,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787758490] [2021-10-08 18:04:26,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:04:26,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:26,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:26,987 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:26,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:04:27,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:27,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:27,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:04:27,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:04:27,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:04:28,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:28,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787758490] [2021-10-08 18:04:28,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787758490] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:28,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:28,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:04:28,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989650988] [2021-10-08 18:04:28,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:28,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:28,257 INFO L87 Difference]: Start difference. First operand 13694 states and 74320 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:29,718 INFO L93 Difference]: Finished difference Result 22206 states and 112922 transitions. [2021-10-08 18:04:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:04:29,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:04:29,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:29,866 INFO L225 Difference]: With dead ends: 22206 [2021-10-08 18:04:29,866 INFO L226 Difference]: Without dead ends: 21924 [2021-10-08 18:04:29,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1082.7ms TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:04:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2021-10-08 18:04:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 14674. [2021-10-08 18:04:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14674 states, 14673 states have (on average 5.276766850678117) internal successors, (77426), 14673 states have internal predecessors, (77426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14674 states to 14674 states and 77426 transitions. [2021-10-08 18:04:30,905 INFO L78 Accepts]: Start accepts. Automaton has 14674 states and 77426 transitions. Word has length 28 [2021-10-08 18:04:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:30,905 INFO L470 AbstractCegarLoop]: Abstraction has 14674 states and 77426 transitions. [2021-10-08 18:04:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 14674 states and 77426 transitions. [2021-10-08 18:04:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:30,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:30,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:30,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:31,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:31,150 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:31,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:31,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1309729608, now seen corresponding path program 18 times [2021-10-08 18:04:31,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:31,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905648975] [2021-10-08 18:04:31,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:04:31,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:31,154 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:31,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:04:31,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:04:31,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:31,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:31,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:04:32,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:32,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:32,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905648975] [2021-10-08 18:04:32,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905648975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:32,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:32,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2021-10-08 18:04:32,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686937542] [2021-10-08 18:04:32,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:04:32,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:04:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:04:32,595 INFO L87 Difference]: Start difference. First operand 14674 states and 77426 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:36,671 INFO L93 Difference]: Finished difference Result 35644 states and 163100 transitions. [2021-10-08 18:04:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:04:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 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 28 [2021-10-08 18:04:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:36,849 INFO L225 Difference]: With dead ends: 35644 [2021-10-08 18:04:36,849 INFO L226 Difference]: Without dead ends: 35324 [2021-10-08 18:04:36,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3288.2ms TimeCoverageRelationStatistics Valid=446, Invalid=1276, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:04:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35324 states. [2021-10-08 18:04:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35324 to 17272. [2021-10-08 18:04:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17272 states, 17271 states have (on average 5.222974929071855) internal successors, (90206), 17271 states have internal predecessors, (90206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17272 states to 17272 states and 90206 transitions. [2021-10-08 18:04:38,285 INFO L78 Accepts]: Start accepts. Automaton has 17272 states and 90206 transitions. Word has length 28 [2021-10-08 18:04:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:38,285 INFO L470 AbstractCegarLoop]: Abstraction has 17272 states and 90206 transitions. [2021-10-08 18:04:38,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17272 states and 90206 transitions. [2021-10-08 18:04:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:38,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:38,368 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:38,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-08 18:04:38,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:38,582 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1065406974, now seen corresponding path program 19 times [2021-10-08 18:04:38,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:38,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107738434] [2021-10-08 18:04:38,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:04:38,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:38,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:38,586 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:38,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:04:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:04:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:39,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:39,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:40,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:40,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107738434] [2021-10-08 18:04:40,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107738434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:40,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:40,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 18:04:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195819544] [2021-10-08 18:04:40,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:04:40,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:04:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:04:40,264 INFO L87 Difference]: Start difference. First operand 17272 states and 90206 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:43,428 INFO L93 Difference]: Finished difference Result 43054 states and 198300 transitions. [2021-10-08 18:04:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:04:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:04:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:43,800 INFO L225 Difference]: With dead ends: 43054 [2021-10-08 18:04:43,800 INFO L226 Difference]: Without dead ends: 42808 [2021-10-08 18:04:43,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2147.8ms TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:04:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42808 states. [2021-10-08 18:04:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42808 to 18628. [2021-10-08 18:04:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18628 states, 18627 states have (on average 5.306705320234069) internal successors, (98848), 18627 states have internal predecessors, (98848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18628 states to 18628 states and 98848 transitions. [2021-10-08 18:04:45,211 INFO L78 Accepts]: Start accepts. Automaton has 18628 states and 98848 transitions. Word has length 28 [2021-10-08 18:04:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:45,211 INFO L470 AbstractCegarLoop]: Abstraction has 18628 states and 98848 transitions. [2021-10-08 18:04:45,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18628 states and 98848 transitions. [2021-10-08 18:04:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:45,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:45,272 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:45,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:45,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:45,478 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash -828041732, now seen corresponding path program 20 times [2021-10-08 18:04:45,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:45,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027113048] [2021-10-08 18:04:45,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:04:45,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:45,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:45,481 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:45,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:04:46,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:46,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:46,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:46,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:46,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:47,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:47,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027113048] [2021-10-08 18:04:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027113048] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:47,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:04:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92987427] [2021-10-08 18:04:47,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:04:47,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:04:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:04:47,262 INFO L87 Difference]: Start difference. First operand 18628 states and 98848 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:50,533 INFO L93 Difference]: Finished difference Result 44506 states and 206805 transitions. [2021-10-08 18:04:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:04:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:04:50,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:50,920 INFO L225 Difference]: With dead ends: 44506 [2021-10-08 18:04:50,920 INFO L226 Difference]: Without dead ends: 44400 [2021-10-08 18:04:50,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2438.7ms TimeCoverageRelationStatistics Valid=422, Invalid=1138, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:04:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44400 states. [2021-10-08 18:04:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44400 to 19776. [2021-10-08 18:04:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19776 states, 19775 states have (on average 5.353577749683945) internal successors, (105867), 19775 states have internal predecessors, (105867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19776 states to 19776 states and 105867 transitions. [2021-10-08 18:04:52,492 INFO L78 Accepts]: Start accepts. Automaton has 19776 states and 105867 transitions. Word has length 28 [2021-10-08 18:04:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 19776 states and 105867 transitions. [2021-10-08 18:04:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19776 states and 105867 transitions. [2021-10-08 18:04:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:52,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:52,550 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:52,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:52,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:52,751 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:52,752 INFO L82 PathProgramCache]: Analyzing trace with hash 302630472, now seen corresponding path program 21 times [2021-10-08 18:04:52,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:52,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200155269] [2021-10-08 18:04:52,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:04:52,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:52,755 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:52,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:04:53,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:04:53,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:53,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:53,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:04:53,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:04:54,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:54,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200155269] [2021-10-08 18:04:54,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200155269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:54,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:54,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 18:04:54,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075106831] [2021-10-08 18:04:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:04:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:04:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:04:54,660 INFO L87 Difference]: Start difference. First operand 19776 states and 105867 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:56,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:56,422 INFO L93 Difference]: Finished difference Result 33772 states and 166869 transitions. [2021-10-08 18:04:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:04:56,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:04:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:56,607 INFO L225 Difference]: With dead ends: 33772 [2021-10-08 18:04:56,607 INFO L226 Difference]: Without dead ends: 33630 [2021-10-08 18:04:56,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1337.9ms TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:04:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33630 states. [2021-10-08 18:04:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33630 to 19778. [2021-10-08 18:04:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19778 states, 19777 states have (on average 5.364918845123123) internal successors, (106102), 19777 states have internal predecessors, (106102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19778 states to 19778 states and 106102 transitions. [2021-10-08 18:04:57,835 INFO L78 Accepts]: Start accepts. Automaton has 19778 states and 106102 transitions. Word has length 28 [2021-10-08 18:04:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:57,835 INFO L470 AbstractCegarLoop]: Abstraction has 19778 states and 106102 transitions. [2021-10-08 18:04:57,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19778 states and 106102 transitions. [2021-10-08 18:04:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:04:57,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:57,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:04:57,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:58,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:58,097 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:04:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash 205250660, now seen corresponding path program 22 times [2021-10-08 18:04:58,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:58,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633368747] [2021-10-08 18:04:58,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:58,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:58,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:58,101 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:58,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:04:58,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:04:58,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:04:58,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:04:59,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:04:59,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633368747] [2021-10-08 18:04:59,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633368747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:59,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:59,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 18:04:59,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795180320] [2021-10-08 18:04:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:04:59,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:04:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:04:59,971 INFO L87 Difference]: Start difference. First operand 19778 states and 106102 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:02,285 INFO L93 Difference]: Finished difference Result 36104 states and 176916 transitions. [2021-10-08 18:05:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:05:02,288 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:02,481 INFO L225 Difference]: With dead ends: 36104 [2021-10-08 18:05:02,481 INFO L226 Difference]: Without dead ends: 36038 [2021-10-08 18:05:02,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1504.9ms TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:05:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36038 states. [2021-10-08 18:05:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36038 to 20280. [2021-10-08 18:05:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 5.406035800581883) internal successors, (109629), 20279 states have internal predecessors, (109629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 109629 transitions. [2021-10-08 18:05:03,767 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 109629 transitions. Word has length 28 [2021-10-08 18:05:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:03,767 INFO L470 AbstractCegarLoop]: Abstraction has 20280 states and 109629 transitions. [2021-10-08 18:05:03,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 109629 transitions. [2021-10-08 18:05:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:03,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:03,827 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:03,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:04,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:04,028 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2117508078, now seen corresponding path program 23 times [2021-10-08 18:05:04,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:04,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545206067] [2021-10-08 18:05:04,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:05:04,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:04,032 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:04,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:05:04,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:05:04,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:04,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:05:04,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:05:05,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:05:05,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:05,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545206067] [2021-10-08 18:05:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545206067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:05,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:05,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:05:05,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877187979] [2021-10-08 18:05:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:05:05,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:05:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:05:05,682 INFO L87 Difference]: Start difference. First operand 20280 states and 109629 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:06,297 INFO L93 Difference]: Finished difference Result 30706 states and 151627 transitions. [2021-10-08 18:05:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:05:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:06,439 INFO L225 Difference]: With dead ends: 30706 [2021-10-08 18:05:06,439 INFO L226 Difference]: Without dead ends: 30588 [2021-10-08 18:05:06,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 321.3ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:05:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30588 states. [2021-10-08 18:05:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30588 to 18040. [2021-10-08 18:05:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18040 states, 18039 states have (on average 5.261599866954931) internal successors, (94914), 18039 states have internal predecessors, (94914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18040 states to 18040 states and 94914 transitions. [2021-10-08 18:05:07,607 INFO L78 Accepts]: Start accepts. Automaton has 18040 states and 94914 transitions. Word has length 28 [2021-10-08 18:05:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:07,608 INFO L470 AbstractCegarLoop]: Abstraction has 18040 states and 94914 transitions. [2021-10-08 18:05:07,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18040 states and 94914 transitions. [2021-10-08 18:05:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:07,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:07,674 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:07,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-08 18:05:07,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:07,880 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:07,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1965083622, now seen corresponding path program 24 times [2021-10-08 18:05:07,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:07,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350053274] [2021-10-08 18:05:07,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:05:07,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:07,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:07,883 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:07,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:05:08,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:05:08,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:08,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:05:08,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:09,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:10,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:10,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350053274] [2021-10-08 18:05:10,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350053274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:10,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:10,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:05:10,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341140921] [2021-10-08 18:05:10,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:05:10,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:05:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:05:10,078 INFO L87 Difference]: Start difference. First operand 18040 states and 94914 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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 18:05:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:12,461 INFO L93 Difference]: Finished difference Result 29786 states and 147608 transitions. [2021-10-08 18:05:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:05:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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 28 [2021-10-08 18:05:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:12,610 INFO L225 Difference]: With dead ends: 29786 [2021-10-08 18:05:12,611 INFO L226 Difference]: Without dead ends: 29708 [2021-10-08 18:05:12,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1779.2ms TimeCoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:05:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29708 states. [2021-10-08 18:05:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29708 to 19868. [2021-10-08 18:05:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19868 states, 19867 states have (on average 5.3030653848089795) internal successors, (105356), 19867 states have internal predecessors, (105356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 105356 transitions. [2021-10-08 18:05:13,729 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 105356 transitions. Word has length 28 [2021-10-08 18:05:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:13,729 INFO L470 AbstractCegarLoop]: Abstraction has 19868 states and 105356 transitions. [2021-10-08 18:05:13,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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 18:05:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 105356 transitions. [2021-10-08 18:05:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:13,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:13,787 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:13,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:13,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:13,988 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:13,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash 474011488, now seen corresponding path program 25 times [2021-10-08 18:05:13,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:13,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528634674] [2021-10-08 18:05:13,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:05:13,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:13,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:13,992 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:13,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:05:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:05:14,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:05:14,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:15,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:16,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:16,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528634674] [2021-10-08 18:05:16,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528634674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:16,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:16,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:05:16,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235227342] [2021-10-08 18:05:16,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:05:16,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:05:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:05:16,038 INFO L87 Difference]: Start difference. First operand 19868 states and 105356 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:18,941 INFO L93 Difference]: Finished difference Result 40134 states and 194094 transitions. [2021-10-08 18:05:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:05:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:19,191 INFO L225 Difference]: With dead ends: 40134 [2021-10-08 18:05:19,191 INFO L226 Difference]: Without dead ends: 40018 [2021-10-08 18:05:19,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1941.6ms TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:05:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40018 states. [2021-10-08 18:05:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40018 to 20524. [2021-10-08 18:05:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20524 states, 20523 states have (on average 5.341957803440043) internal successors, (109633), 20523 states have internal predecessors, (109633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20524 states to 20524 states and 109633 transitions. [2021-10-08 18:05:20,773 INFO L78 Accepts]: Start accepts. Automaton has 20524 states and 109633 transitions. Word has length 28 [2021-10-08 18:05:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:20,773 INFO L470 AbstractCegarLoop]: Abstraction has 20524 states and 109633 transitions. [2021-10-08 18:05:20,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 20524 states and 109633 transitions. [2021-10-08 18:05:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:20,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:20,850 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:20,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:21,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:21,051 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash 36475344, now seen corresponding path program 26 times [2021-10-08 18:05:21,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:21,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394355045] [2021-10-08 18:05:21,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:05:21,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:21,055 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:21,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:05:21,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:05:21,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:21,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:05:21,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:05:22,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:05:22,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:22,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394355045] [2021-10-08 18:05:22,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394355045] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:22,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:22,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 18:05:22,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921288494] [2021-10-08 18:05:22,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:05:22,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:05:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:05:22,898 INFO L87 Difference]: Start difference. First operand 20524 states and 109633 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:25,002 INFO L93 Difference]: Finished difference Result 34760 states and 170715 transitions. [2021-10-08 18:05:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:05:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:25,165 INFO L225 Difference]: With dead ends: 34760 [2021-10-08 18:05:25,165 INFO L226 Difference]: Without dead ends: 34652 [2021-10-08 18:05:25,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1344.5ms TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:05:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34652 states. [2021-10-08 18:05:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34652 to 20896. [2021-10-08 18:05:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20896 states, 20895 states have (on average 5.370040679588418) internal successors, (112207), 20895 states have internal predecessors, (112207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20896 states to 20896 states and 112207 transitions. [2021-10-08 18:05:26,455 INFO L78 Accepts]: Start accepts. Automaton has 20896 states and 112207 transitions. Word has length 28 [2021-10-08 18:05:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:26,455 INFO L470 AbstractCegarLoop]: Abstraction has 20896 states and 112207 transitions. [2021-10-08 18:05:26,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 20896 states and 112207 transitions. [2021-10-08 18:05:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:26,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:26,517 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:26,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-08 18:05:26,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:26,718 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash 857340210, now seen corresponding path program 27 times [2021-10-08 18:05:26,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:26,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092246316] [2021-10-08 18:05:26,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:05:26,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:26,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:26,721 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:26,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:05:27,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:05:27,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:27,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:05:27,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:05:27,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:05:28,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:28,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092246316] [2021-10-08 18:05:28,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092246316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:28,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:28,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 18:05:28,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417450453] [2021-10-08 18:05:28,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:05:28,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:05:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:05:28,525 INFO L87 Difference]: Start difference. First operand 20896 states and 112207 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:29,435 INFO L93 Difference]: Finished difference Result 27192 states and 139006 transitions. [2021-10-08 18:05:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:05:29,436 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:29,564 INFO L225 Difference]: With dead ends: 27192 [2021-10-08 18:05:29,565 INFO L226 Difference]: Without dead ends: 26658 [2021-10-08 18:05:29,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 495.3ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:05:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26658 states. [2021-10-08 18:05:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26658 to 23140. [2021-10-08 18:05:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23140 states, 23139 states have (on average 5.303729633951337) internal successors, (122723), 23139 states have internal predecessors, (122723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23140 states to 23140 states and 122723 transitions. [2021-10-08 18:05:30,845 INFO L78 Accepts]: Start accepts. Automaton has 23140 states and 122723 transitions. Word has length 28 [2021-10-08 18:05:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:30,845 INFO L470 AbstractCegarLoop]: Abstraction has 23140 states and 122723 transitions. [2021-10-08 18:05:30,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 23140 states and 122723 transitions. [2021-10-08 18:05:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:30,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:30,925 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:30,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:31,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:31,127 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1498820506, now seen corresponding path program 28 times [2021-10-08 18:05:31,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:31,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095356572] [2021-10-08 18:05:31,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:05:31,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:31,130 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:31,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:05:31,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:05:31,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:31,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:05:31,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:32,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:33,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:33,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095356572] [2021-10-08 18:05:33,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095356572] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:33,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:33,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 18:05:33,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667565666] [2021-10-08 18:05:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:05:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:05:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:05:33,209 INFO L87 Difference]: Start difference. First operand 23140 states and 122723 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:39,758 INFO L93 Difference]: Finished difference Result 42422 states and 201040 transitions. [2021-10-08 18:05:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 18:05:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:05:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:39,952 INFO L225 Difference]: With dead ends: 42422 [2021-10-08 18:05:39,952 INFO L226 Difference]: Without dead ends: 42318 [2021-10-08 18:05:39,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 4859.6ms TimeCoverageRelationStatistics Valid=726, Invalid=2354, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 18:05:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42318 states. [2021-10-08 18:05:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42318 to 24318. [2021-10-08 18:05:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24318 states, 24317 states have (on average 5.3328946827322445) internal successors, (129680), 24317 states have internal predecessors, (129680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24318 states to 24318 states and 129680 transitions. [2021-10-08 18:05:41,697 INFO L78 Accepts]: Start accepts. Automaton has 24318 states and 129680 transitions. Word has length 28 [2021-10-08 18:05:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:41,697 INFO L470 AbstractCegarLoop]: Abstraction has 24318 states and 129680 transitions. [2021-10-08 18:05:41,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 24318 states and 129680 transitions. [2021-10-08 18:05:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:41,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:41,771 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:41,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:41,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:41,972 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:41,973 INFO L82 PathProgramCache]: Analyzing trace with hash -974093808, now seen corresponding path program 29 times [2021-10-08 18:05:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:41,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343993020] [2021-10-08 18:05:41,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:05:41,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:41,975 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:41,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:05:42,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:05:42,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:05:42,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:43,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:43,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:43,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343993020] [2021-10-08 18:05:43,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343993020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:43,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:43,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:05:43,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088473711] [2021-10-08 18:05:43,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:05:43,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:05:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:05:43,795 INFO L87 Difference]: Start difference. First operand 24318 states and 129680 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:45,875 INFO L93 Difference]: Finished difference Result 43482 states and 215467 transitions. [2021-10-08 18:05:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 18:05:45,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:05:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:46,089 INFO L225 Difference]: With dead ends: 43482 [2021-10-08 18:05:46,089 INFO L226 Difference]: Without dead ends: 43392 [2021-10-08 18:05:46,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1416.9ms TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:05:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43392 states. [2021-10-08 18:05:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43392 to 26976. [2021-10-08 18:05:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26976 states, 26975 states have (on average 5.409304911955514) internal successors, (145916), 26975 states have internal predecessors, (145916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26976 states to 26976 states and 145916 transitions. [2021-10-08 18:05:47,648 INFO L78 Accepts]: Start accepts. Automaton has 26976 states and 145916 transitions. Word has length 28 [2021-10-08 18:05:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:47,649 INFO L470 AbstractCegarLoop]: Abstraction has 26976 states and 145916 transitions. [2021-10-08 18:05:47,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26976 states and 145916 transitions. [2021-10-08 18:05:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:05:48,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:48,128 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:05:48,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:48,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:48,343 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:05:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:48,344 INFO L82 PathProgramCache]: Analyzing trace with hash 896027472, now seen corresponding path program 30 times [2021-10-08 18:05:48,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:48,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507187530] [2021-10-08 18:05:48,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:05:48,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:48,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:48,346 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:48,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 18:05:49,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:05:49,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:05:49,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:05:49,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:50,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:50,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507187530] [2021-10-08 18:05:50,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507187530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:50,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:50,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 18:05:50,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972118282] [2021-10-08 18:05:50,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:05:50,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:05:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:05:50,426 INFO L87 Difference]: Start difference. First operand 26976 states and 145916 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:58,271 INFO L93 Difference]: Finished difference Result 51592 states and 245812 transitions. [2021-10-08 18:05:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 18:05:58,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:05:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:58,525 INFO L225 Difference]: With dead ends: 51592 [2021-10-08 18:05:58,525 INFO L226 Difference]: Without dead ends: 51480 [2021-10-08 18:05:58,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 5900.2ms TimeCoverageRelationStatistics Valid=965, Invalid=3865, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 18:05:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51480 states. [2021-10-08 18:06:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51480 to 27430. [2021-10-08 18:06:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27430 states, 27429 states have (on average 5.424441284771592) internal successors, (148787), 27429 states have internal predecessors, (148787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27430 states to 27430 states and 148787 transitions. [2021-10-08 18:06:00,580 INFO L78 Accepts]: Start accepts. Automaton has 27430 states and 148787 transitions. Word has length 28 [2021-10-08 18:06:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:00,581 INFO L470 AbstractCegarLoop]: Abstraction has 27430 states and 148787 transitions. [2021-10-08 18:06:00,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27430 states and 148787 transitions. [2021-10-08 18:06:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:00,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:00,667 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:06:00,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:00,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:00,868 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:00,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1639106862, now seen corresponding path program 31 times [2021-10-08 18:06:00,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:00,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833250885] [2021-10-08 18:06:00,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:06:00,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:00,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:00,872 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:00,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 18:06:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:06:01,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:06:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:02,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:03,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:03,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833250885] [2021-10-08 18:06:03,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833250885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:03,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:03,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 18:06:03,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367214117] [2021-10-08 18:06:03,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:06:03,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:06:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:06:03,493 INFO L87 Difference]: Start difference. First operand 27430 states and 148787 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:09,419 INFO L93 Difference]: Finished difference Result 53534 states and 260305 transitions. [2021-10-08 18:06:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:06:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:06:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:10,007 INFO L225 Difference]: With dead ends: 53534 [2021-10-08 18:06:10,007 INFO L226 Difference]: Without dead ends: 53434 [2021-10-08 18:06:10,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 4010.2ms TimeCoverageRelationStatistics Valid=602, Invalid=1654, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:06:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53434 states. [2021-10-08 18:06:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53434 to 28182. [2021-10-08 18:06:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28182 states, 28181 states have (on average 5.454171250133069) internal successors, (153704), 28181 states have internal predecessors, (153704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28182 states to 28182 states and 153704 transitions. [2021-10-08 18:06:12,130 INFO L78 Accepts]: Start accepts. Automaton has 28182 states and 153704 transitions. Word has length 28 [2021-10-08 18:06:12,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:12,130 INFO L470 AbstractCegarLoop]: Abstraction has 28182 states and 153704 transitions. [2021-10-08 18:06:12,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 28182 states and 153704 transitions. [2021-10-08 18:06:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:12,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:12,220 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 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 18:06:12,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:12,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:12,421 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1179292288, now seen corresponding path program 32 times [2021-10-08 18:06:12,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:12,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764647283] [2021-10-08 18:06:12,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:06:12,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:12,425 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:12,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 18:06:13,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:06:13,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:13,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:06:13,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:14,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:14,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:14,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764647283] [2021-10-08 18:06:14,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764647283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:14,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:14,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 18:06:14,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225751911] [2021-10-08 18:06:14,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:06:14,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:06:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:06:14,872 INFO L87 Difference]: Start difference. First operand 28182 states and 153704 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:18,382 INFO L93 Difference]: Finished difference Result 48852 states and 246350 transitions. [2021-10-08 18:06:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:06:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:06:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:18,642 INFO L225 Difference]: With dead ends: 48852 [2021-10-08 18:06:18,642 INFO L226 Difference]: Without dead ends: 48496 [2021-10-08 18:06:18,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2190.6ms TimeCoverageRelationStatistics Valid=388, Invalid=944, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 18:06:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48496 states. [2021-10-08 18:06:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48496 to 30004. [2021-10-08 18:06:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30004 states, 30003 states have (on average 5.469886344698863) internal successors, (164113), 30003 states have internal predecessors, (164113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30004 states to 30004 states and 164113 transitions. [2021-10-08 18:06:20,300 INFO L78 Accepts]: Start accepts. Automaton has 30004 states and 164113 transitions. Word has length 28 [2021-10-08 18:06:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 30004 states and 164113 transitions. [2021-10-08 18:06:20,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30004 states and 164113 transitions. [2021-10-08 18:06:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:20,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:20,397 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:06:20,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:20,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:20,598 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:20,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:20,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1280400884, now seen corresponding path program 33 times [2021-10-08 18:06:20,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:20,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568858504] [2021-10-08 18:06:20,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:06:20,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:20,601 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:20,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 18:06:21,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:06:21,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:21,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:06:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:06:22,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:06:23,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:23,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568858504] [2021-10-08 18:06:23,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568858504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:23,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:23,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:06:23,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683040848] [2021-10-08 18:06:23,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:06:23,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:06:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:06:23,098 INFO L87 Difference]: Start difference. First operand 30004 states and 164113 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:26,183 INFO L93 Difference]: Finished difference Result 54098 states and 277100 transitions. [2021-10-08 18:06:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 18:06:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:06:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:26,481 INFO L225 Difference]: With dead ends: 54098 [2021-10-08 18:06:26,481 INFO L226 Difference]: Without dead ends: 53828 [2021-10-08 18:06:26,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2171.9ms TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:06:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53828 states. [2021-10-08 18:06:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53828 to 32548. [2021-10-08 18:06:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32548 states, 32547 states have (on average 5.545119365840169) internal successors, (180477), 32547 states have internal predecessors, (180477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32548 states to 32548 states and 180477 transitions. [2021-10-08 18:06:28,751 INFO L78 Accepts]: Start accepts. Automaton has 32548 states and 180477 transitions. Word has length 28 [2021-10-08 18:06:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:28,751 INFO L470 AbstractCegarLoop]: Abstraction has 32548 states and 180477 transitions. [2021-10-08 18:06:28,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32548 states and 180477 transitions. [2021-10-08 18:06:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:28,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:28,854 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:06:28,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:29,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:29,062 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:29,065 INFO L82 PathProgramCache]: Analyzing trace with hash -245810296, now seen corresponding path program 34 times [2021-10-08 18:06:29,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:29,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569861203] [2021-10-08 18:06:29,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:06:29,066 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:29,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:29,067 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:29,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 18:06:29,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:06:29,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:30,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:06:30,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:30,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:31,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:31,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569861203] [2021-10-08 18:06:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569861203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:31,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 18:06:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805250159] [2021-10-08 18:06:31,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:06:31,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:06:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:06:31,842 INFO L87 Difference]: Start difference. First operand 32548 states and 180477 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:39,740 INFO L93 Difference]: Finished difference Result 64886 states and 322289 transitions. [2021-10-08 18:06:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 18:06:39,741 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:06:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:40,116 INFO L225 Difference]: With dead ends: 64886 [2021-10-08 18:06:40,117 INFO L226 Difference]: Without dead ends: 64760 [2021-10-08 18:06:40,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 6162.2ms TimeCoverageRelationStatistics Valid=828, Invalid=2594, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 18:06:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64760 states. [2021-10-08 18:06:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64760 to 33546. [2021-10-08 18:06:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33546 states, 33545 states have (on average 5.575644656431659) internal successors, (187035), 33545 states have internal predecessors, (187035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33546 states to 33546 states and 187035 transitions. [2021-10-08 18:06:42,638 INFO L78 Accepts]: Start accepts. Automaton has 33546 states and 187035 transitions. Word has length 28 [2021-10-08 18:06:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:42,638 INFO L470 AbstractCegarLoop]: Abstraction has 33546 states and 187035 transitions. [2021-10-08 18:06:42,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 33546 states and 187035 transitions. [2021-10-08 18:06:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:43,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:43,151 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 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 18:06:43,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:43,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:43,352 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash -849038612, now seen corresponding path program 35 times [2021-10-08 18:06:43,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:43,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587293488] [2021-10-08 18:06:43,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:06:43,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:43,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:43,355 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:43,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 18:06:44,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:06:44,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:44,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:06:44,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:44,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:45,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:45,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587293488] [2021-10-08 18:06:45,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587293488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:45,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 18:06:45,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187165698] [2021-10-08 18:06:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:06:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:06:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:06:45,504 INFO L87 Difference]: Start difference. First operand 33546 states and 187035 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:47,692 INFO L93 Difference]: Finished difference Result 50944 states and 265815 transitions. [2021-10-08 18:06:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:06:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 28 [2021-10-08 18:06:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:47,982 INFO L225 Difference]: With dead ends: 50944 [2021-10-08 18:06:47,983 INFO L226 Difference]: Without dead ends: 50870 [2021-10-08 18:06:47,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1314.2ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:06:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50870 states. [2021-10-08 18:06:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50870 to 35568. [2021-10-08 18:06:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35568 states, 35567 states have (on average 5.597716984845503) internal successors, (199094), 35567 states have internal predecessors, (199094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35568 states to 35568 states and 199094 transitions. [2021-10-08 18:06:50,365 INFO L78 Accepts]: Start accepts. Automaton has 35568 states and 199094 transitions. Word has length 28 [2021-10-08 18:06:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:50,366 INFO L470 AbstractCegarLoop]: Abstraction has 35568 states and 199094 transitions. [2021-10-08 18:06:50,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 35568 states and 199094 transitions. [2021-10-08 18:06:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:50,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:50,484 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:06:50,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:50,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:50,685 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:50,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -990700036, now seen corresponding path program 36 times [2021-10-08 18:06:50,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:50,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142351425] [2021-10-08 18:06:50,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:06:50,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:50,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:50,689 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:50,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 18:06:51,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:06:51,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:51,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:06:51,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:06:52,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:06:52,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:52,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142351425] [2021-10-08 18:06:52,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142351425] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:52,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:52,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 18:06:52,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487751353] [2021-10-08 18:06:52,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:06:52,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:06:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:06:52,842 INFO L87 Difference]: Start difference. First operand 35568 states and 199094 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:56,184 INFO L93 Difference]: Finished difference Result 53982 states and 273969 transitions. [2021-10-08 18:06:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:06:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 18:06:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:56,863 INFO L225 Difference]: With dead ends: 53982 [2021-10-08 18:06:56,864 INFO L226 Difference]: Without dead ends: 53698 [2021-10-08 18:06:56,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2046.8ms TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 18:06:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53698 states. [2021-10-08 18:06:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53698 to 35318. [2021-10-08 18:06:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35318 states, 35317 states have (on average 5.576068182461704) internal successors, (196930), 35317 states have internal predecessors, (196930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35318 states to 35318 states and 196930 transitions. [2021-10-08 18:06:58,952 INFO L78 Accepts]: Start accepts. Automaton has 35318 states and 196930 transitions. Word has length 28 [2021-10-08 18:06:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:58,953 INFO L470 AbstractCegarLoop]: Abstraction has 35318 states and 196930 transitions. [2021-10-08 18:06:58,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 35318 states and 196930 transitions. [2021-10-08 18:06:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:06:59,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:59,069 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:06:59,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-08 18:06:59,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:59,276 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:06:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:59,277 INFO L82 PathProgramCache]: Analyzing trace with hash 18223118, now seen corresponding path program 37 times [2021-10-08 18:06:59,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:59,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808459513] [2021-10-08 18:06:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:06:59,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:59,280 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:59,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 18:07:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:07:00,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:07:00,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:07:02,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:02,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808459513] [2021-10-08 18:07:02,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808459513] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:02,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:02,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 18:07:02,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796126410] [2021-10-08 18:07:02,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:07:02,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:07:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:07:02,148 INFO L87 Difference]: Start difference. First operand 35318 states and 196930 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:07,762 INFO L93 Difference]: Finished difference Result 65116 states and 324676 transitions. [2021-10-08 18:07:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:07:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:07:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:08,107 INFO L225 Difference]: With dead ends: 65116 [2021-10-08 18:07:08,107 INFO L226 Difference]: Without dead ends: 64988 [2021-10-08 18:07:08,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 3819.3ms TimeCoverageRelationStatistics Valid=540, Invalid=1622, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:07:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64988 states. [2021-10-08 18:07:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64988 to 35908. [2021-10-08 18:07:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35908 states, 35907 states have (on average 5.593477594897931) internal successors, (200845), 35907 states have internal predecessors, (200845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35908 states to 35908 states and 200845 transitions. [2021-10-08 18:07:10,650 INFO L78 Accepts]: Start accepts. Automaton has 35908 states and 200845 transitions. Word has length 28 [2021-10-08 18:07:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:10,650 INFO L470 AbstractCegarLoop]: Abstraction has 35908 states and 200845 transitions. [2021-10-08 18:07:10,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 35908 states and 200845 transitions. [2021-10-08 18:07:11,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 18:07:11,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:11,207 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:07:11,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:11,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:11,420 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:07:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash -118637872, now seen corresponding path program 38 times [2021-10-08 18:07:11,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:11,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936640266] [2021-10-08 18:07:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:07:11,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:11,424 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:11,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 18:07:12,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:07:12,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:12,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:07:12,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:07:13,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:07:13,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:13,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936640266] [2021-10-08 18:07:13,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936640266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:13,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:13,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 18:07:13,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455529571] [2021-10-08 18:07:13,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:07:13,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:07:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:07:13,988 INFO L87 Difference]: Start difference. First operand 35908 states and 200845 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:18,303 INFO L93 Difference]: Finished difference Result 61420 states and 309678 transitions. [2021-10-08 18:07:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:07:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-10-08 18:07:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:18,630 INFO L225 Difference]: With dead ends: 61420 [2021-10-08 18:07:18,630 INFO L226 Difference]: Without dead ends: 61132 [2021-10-08 18:07:18,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2667.9ms TimeCoverageRelationStatistics Valid=383, Invalid=1177, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:07:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61132 states. [2021-10-08 18:07:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61132 to 35684. [2021-10-08 18:07:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35684 states, 35683 states have (on average 5.6092817307961775) internal successors, (200156), 35683 states have internal predecessors, (200156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35684 states to 35684 states and 200156 transitions. [2021-10-08 18:07:21,033 INFO L78 Accepts]: Start accepts. Automaton has 35684 states and 200156 transitions. Word has length 28 [2021-10-08 18:07:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:21,033 INFO L470 AbstractCegarLoop]: Abstraction has 35684 states and 200156 transitions. [2021-10-08 18:07:21,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35684 states and 200156 transitions. [2021-10-08 18:07:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 18:07:21,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:21,146 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:21,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:21,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:21,347 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:07:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1066837286, now seen corresponding path program 39 times [2021-10-08 18:07:21,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:21,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815891540] [2021-10-08 18:07:21,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:07:21,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:21,350 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:21,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 18:07:22,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:07:22,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:22,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:07:22,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:07:23,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:07:23,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:23,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815891540] [2021-10-08 18:07:23,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815891540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:23,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:23,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-10-08 18:07:23,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814175705] [2021-10-08 18:07:23,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:07:23,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:07:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:07:23,469 INFO L87 Difference]: Start difference. First operand 35684 states and 200156 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:24,614 INFO L93 Difference]: Finished difference Result 63569 states and 352516 transitions. [2021-10-08 18:07:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:07:24,614 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 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 29 [2021-10-08 18:07:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:25,014 INFO L225 Difference]: With dead ends: 63569 [2021-10-08 18:07:25,014 INFO L226 Difference]: Without dead ends: 62878 [2021-10-08 18:07:25,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 171.0ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:07:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62878 states. [2021-10-08 18:07:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62878 to 44592. [2021-10-08 18:07:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44592 states, 44591 states have (on average 5.647013971429212) internal successors, (251806), 44591 states have internal predecessors, (251806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44592 states to 44592 states and 251806 transitions. [2021-10-08 18:07:27,840 INFO L78 Accepts]: Start accepts. Automaton has 44592 states and 251806 transitions. Word has length 29 [2021-10-08 18:07:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:27,840 INFO L470 AbstractCegarLoop]: Abstraction has 44592 states and 251806 transitions. [2021-10-08 18:07:27,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44592 states and 251806 transitions. [2021-10-08 18:07:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 18:07:27,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:27,984 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 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 18:07:28,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:28,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:28,185 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:07:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1592424201, now seen corresponding path program 40 times [2021-10-08 18:07:28,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:28,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325316152] [2021-10-08 18:07:28,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:07:28,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:28,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:28,188 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:28,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 18:07:29,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:07:29,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:29,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:07:29,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:07:29,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:07:30,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:30,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325316152] [2021-10-08 18:07:30,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325316152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:30,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:30,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:07:30,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121245275] [2021-10-08 18:07:30,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:07:30,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:07:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:07:30,487 INFO L87 Difference]: Start difference. First operand 44592 states and 251806 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 18:07:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:34,496 INFO L93 Difference]: Finished difference Result 125722 states and 679014 transitions. [2021-10-08 18:07:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:07:34,500 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 29 [2021-10-08 18:07:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:35,586 INFO L225 Difference]: With dead ends: 125722 [2021-10-08 18:07:35,586 INFO L226 Difference]: Without dead ends: 125360 [2021-10-08 18:07:35,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1721.4ms TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 18:07:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125360 states. [2021-10-08 18:07:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125360 to 62976. [2021-10-08 18:07:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62976 states, 62975 states have (on average 5.857117903930131) internal successors, (368852), 62975 states have internal predecessors, (368852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62976 states to 62976 states and 368852 transitions. [2021-10-08 18:07:41,050 INFO L78 Accepts]: Start accepts. Automaton has 62976 states and 368852 transitions. Word has length 29 [2021-10-08 18:07:41,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:41,050 INFO L470 AbstractCegarLoop]: Abstraction has 62976 states and 368852 transitions. [2021-10-08 18:07:41,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 18:07:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 62976 states and 368852 transitions. [2021-10-08 18:07:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:07:42,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:42,105 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:42,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:42,305 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:07:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1228249409, now seen corresponding path program 41 times [2021-10-08 18:07:42,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:42,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333227657] [2021-10-08 18:07:42,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:07:42,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:42,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:42,310 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:42,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 18:07:43,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:07:43,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:43,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:07:43,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:07:43,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:07:44,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:44,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333227657] [2021-10-08 18:07:44,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333227657] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:44,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:44,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:07:44,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213437738] [2021-10-08 18:07:44,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:07:44,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:07:44,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:07:44,647 INFO L87 Difference]: Start difference. First operand 62976 states and 368852 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:48,029 INFO L93 Difference]: Finished difference Result 85920 states and 465224 transitions. [2021-10-08 18:07:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 18:07:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:07:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:49,175 INFO L225 Difference]: With dead ends: 85920 [2021-10-08 18:07:49,175 INFO L226 Difference]: Without dead ends: 84970 [2021-10-08 18:07:49,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2267.7ms TimeCoverageRelationStatistics Valid=242, Invalid=814, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:07:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84970 states. [2021-10-08 18:07:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84970 to 71194. [2021-10-08 18:07:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71194 states, 71193 states have (on average 5.687665922211453) internal successors, (404922), 71193 states have internal predecessors, (404922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71194 states to 71194 states and 404922 transitions. [2021-10-08 18:07:52,980 INFO L78 Accepts]: Start accepts. Automaton has 71194 states and 404922 transitions. Word has length 30 [2021-10-08 18:07:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:52,981 INFO L470 AbstractCegarLoop]: Abstraction has 71194 states and 404922 transitions. [2021-10-08 18:07:52,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 71194 states and 404922 transitions. [2021-10-08 18:07:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:07:53,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:53,889 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:53,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-08 18:07:54,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:54,103 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:07:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:54,104 INFO L82 PathProgramCache]: Analyzing trace with hash 223052371, now seen corresponding path program 42 times [2021-10-08 18:07:54,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:54,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996803669] [2021-10-08 18:07:54,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:07:54,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:54,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:54,108 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:54,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 18:07:55,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:07:55,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:55,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:07:55,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:07:55,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:07:56,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:56,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996803669] [2021-10-08 18:07:56,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996803669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:56,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:56,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2021-10-08 18:07:56,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436832740] [2021-10-08 18:07:56,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:07:56,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:07:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:07:56,893 INFO L87 Difference]: Start difference. First operand 71194 states and 404922 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:09,834 INFO L93 Difference]: Finished difference Result 148830 states and 743006 transitions. [2021-10-08 18:08:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 18:08:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2021-10-08 18:08:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:10,964 INFO L225 Difference]: With dead ends: 148830 [2021-10-08 18:08:10,964 INFO L226 Difference]: Without dead ends: 148510 [2021-10-08 18:08:10,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 9552.7ms TimeCoverageRelationStatistics Valid=1111, Invalid=3581, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 18:08:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148510 states. [2021-10-08 18:08:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148510 to 72038. [2021-10-08 18:08:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72038 states, 72037 states have (on average 5.651054319308133) internal successors, (407085), 72037 states have internal predecessors, (407085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72038 states to 72038 states and 407085 transitions. [2021-10-08 18:08:17,197 INFO L78 Accepts]: Start accepts. Automaton has 72038 states and 407085 transitions. Word has length 30 [2021-10-08 18:08:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:17,197 INFO L470 AbstractCegarLoop]: Abstraction has 72038 states and 407085 transitions. [2021-10-08 18:08:17,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 72038 states and 407085 transitions. [2021-10-08 18:08:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:08:18,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:18,115 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:18,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:18,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:18,329 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:08:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 525267691, now seen corresponding path program 43 times [2021-10-08 18:08:18,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:18,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239641427] [2021-10-08 18:08:18,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:08:18,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:18,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:18,333 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:18,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 18:08:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:08:19,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:08:19,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:08:19,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:08:21,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:21,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239641427] [2021-10-08 18:08:21,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239641427] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:21,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:21,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:08:21,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938731858] [2021-10-08 18:08:21,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:08:21,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:08:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:08:21,025 INFO L87 Difference]: Start difference. First operand 72038 states and 407085 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:31,252 INFO L93 Difference]: Finished difference Result 133398 states and 693686 transitions. [2021-10-08 18:08:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 18:08:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 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 30 [2021-10-08 18:08:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:32,942 INFO L225 Difference]: With dead ends: 133398 [2021-10-08 18:08:32,942 INFO L226 Difference]: Without dead ends: 133008 [2021-10-08 18:08:32,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 7865.9ms TimeCoverageRelationStatistics Valid=835, Invalid=2245, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 18:08:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133008 states. [2021-10-08 18:08:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133008 to 72068. [2021-10-08 18:08:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72068 states, 72067 states have (on average 5.579363647716708) internal successors, (402088), 72067 states have internal predecessors, (402088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72068 states to 72068 states and 402088 transitions. [2021-10-08 18:08:39,503 INFO L78 Accepts]: Start accepts. Automaton has 72068 states and 402088 transitions. Word has length 30 [2021-10-08 18:08:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:39,503 INFO L470 AbstractCegarLoop]: Abstraction has 72068 states and 402088 transitions. [2021-10-08 18:08:39,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 72068 states and 402088 transitions. [2021-10-08 18:08:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:08:39,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:39,872 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:39,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:40,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:40,073 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:08:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -881004983, now seen corresponding path program 44 times [2021-10-08 18:08:40,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:40,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821846527] [2021-10-08 18:08:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:08:40,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:40,076 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:40,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 18:08:41,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:08:41,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:41,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:08:41,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:08:41,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:08:43,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:43,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821846527] [2021-10-08 18:08:43,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821846527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:43,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:43,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:08:43,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346944777] [2021-10-08 18:08:43,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:08:43,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:08:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:08:43,075 INFO L87 Difference]: Start difference. First operand 72068 states and 402088 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:51,792 INFO L93 Difference]: Finished difference Result 106118 states and 555233 transitions. [2021-10-08 18:08:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 18:08:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 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 30 [2021-10-08 18:08:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:53,122 INFO L225 Difference]: With dead ends: 106118 [2021-10-08 18:08:53,122 INFO L226 Difference]: Without dead ends: 105102 [2021-10-08 18:08:53,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 6949.8ms TimeCoverageRelationStatistics Valid=791, Invalid=1861, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:08:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105102 states. [2021-10-08 18:08:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105102 to 75654. [2021-10-08 18:08:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75654 states, 75653 states have (on average 5.553725562766843) internal successors, (420156), 75653 states have internal predecessors, (420156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75654 states to 75654 states and 420156 transitions. [2021-10-08 18:08:58,024 INFO L78 Accepts]: Start accepts. Automaton has 75654 states and 420156 transitions. Word has length 30 [2021-10-08 18:08:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:58,024 INFO L470 AbstractCegarLoop]: Abstraction has 75654 states and 420156 transitions. [2021-10-08 18:08:58,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 75654 states and 420156 transitions. [2021-10-08 18:08:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:08:58,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:58,992 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:59,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:59,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:59,193 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:08:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1422174677, now seen corresponding path program 45 times [2021-10-08 18:08:59,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:59,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044166612] [2021-10-08 18:08:59,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:08:59,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:59,196 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:59,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 18:09:00,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:09:00,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:00,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:09:00,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:09:00,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:09:01,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:01,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044166612] [2021-10-08 18:09:01,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044166612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:01,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:01,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:09:01,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45875933] [2021-10-08 18:09:01,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:09:01,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:09:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:09:01,435 INFO L87 Difference]: Start difference. First operand 75654 states and 420156 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:04,412 INFO L93 Difference]: Finished difference Result 119026 states and 614921 transitions. [2021-10-08 18:09:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 18:09:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 30 [2021-10-08 18:09:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:05,390 INFO L225 Difference]: With dead ends: 119026 [2021-10-08 18:09:05,390 INFO L226 Difference]: Without dead ends: 118662 [2021-10-08 18:09:05,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 834.8ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:09:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2021-10-08 18:09:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 70936. [2021-10-08 18:09:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70936 states, 70935 states have (on average 5.628025657291887) internal successors, (399224), 70935 states have internal predecessors, (399224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70936 states to 70936 states and 399224 transitions. [2021-10-08 18:09:11,666 INFO L78 Accepts]: Start accepts. Automaton has 70936 states and 399224 transitions. Word has length 30 [2021-10-08 18:09:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:11,666 INFO L470 AbstractCegarLoop]: Abstraction has 70936 states and 399224 transitions. [2021-10-08 18:09:11,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 70936 states and 399224 transitions. [2021-10-08 18:09:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:09:12,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:12,117 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:12,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:12,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:12,331 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:09:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2031589705, now seen corresponding path program 46 times [2021-10-08 18:09:12,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:12,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364533216] [2021-10-08 18:09:12,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:09:12,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:12,338 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:12,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 18:09:13,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:09:13,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:09:13,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:09:14,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:09:15,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:15,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364533216] [2021-10-08 18:09:15,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364533216] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:15,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:15,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:09:15,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458978409] [2021-10-08 18:09:15,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:09:15,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:09:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:09:15,402 INFO L87 Difference]: Start difference. First operand 70936 states and 399224 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:18,915 INFO L93 Difference]: Finished difference Result 128250 states and 672499 transitions. [2021-10-08 18:09:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:09:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 30 [2021-10-08 18:09:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:20,497 INFO L225 Difference]: With dead ends: 128250 [2021-10-08 18:09:20,498 INFO L226 Difference]: Without dead ends: 127962 [2021-10-08 18:09:20,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1658.5ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:09:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127962 states. [2021-10-08 18:09:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127962 to 76456. [2021-10-08 18:09:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76456 states, 76455 states have (on average 5.681512000523184) internal successors, (434380), 76455 states have internal predecessors, (434380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76456 states to 76456 states and 434380 transitions. [2021-10-08 18:09:27,266 INFO L78 Accepts]: Start accepts. Automaton has 76456 states and 434380 transitions. Word has length 30 [2021-10-08 18:09:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:27,266 INFO L470 AbstractCegarLoop]: Abstraction has 76456 states and 434380 transitions. [2021-10-08 18:09:27,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:27,266 INFO L276 IsEmpty]: Start isEmpty. Operand 76456 states and 434380 transitions. [2021-10-08 18:09:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:09:27,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:27,579 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:27,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:27,780 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:09:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1942379781, now seen corresponding path program 47 times [2021-10-08 18:09:27,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:27,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245856353] [2021-10-08 18:09:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:09:27,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:27,784 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 18:09:29,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:09:29,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:29,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:09:29,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:09:30,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:09:32,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:32,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245856353] [2021-10-08 18:09:32,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245856353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:32,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:32,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:09:32,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541914200] [2021-10-08 18:09:32,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:09:32,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:09:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:09:32,013 INFO L87 Difference]: Start difference. First operand 76456 states and 434380 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:41,288 INFO L93 Difference]: Finished difference Result 100358 states and 547295 transitions. [2021-10-08 18:09:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:09:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 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 30 [2021-10-08 18:09:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:42,094 INFO L225 Difference]: With dead ends: 100358 [2021-10-08 18:09:42,095 INFO L226 Difference]: Without dead ends: 98582 [2021-10-08 18:09:42,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 7764.5ms TimeCoverageRelationStatistics Valid=723, Invalid=1439, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:09:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98582 states. [2021-10-08 18:09:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98582 to 79644. [2021-10-08 18:09:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79644 states, 79643 states have (on average 5.664314503471743) internal successors, (451123), 79643 states have internal predecessors, (451123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79644 states to 79644 states and 451123 transitions. [2021-10-08 18:09:47,544 INFO L78 Accepts]: Start accepts. Automaton has 79644 states and 451123 transitions. Word has length 30 [2021-10-08 18:09:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:47,545 INFO L470 AbstractCegarLoop]: Abstraction has 79644 states and 451123 transitions. [2021-10-08 18:09:47,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 79644 states and 451123 transitions. [2021-10-08 18:09:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:09:47,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:47,885 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:47,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-08 18:09:48,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:48,086 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:09:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -706336317, now seen corresponding path program 48 times [2021-10-08 18:09:48,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:48,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568422039] [2021-10-08 18:09:48,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:09:48,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:48,089 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:48,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 18:09:49,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:09:49,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:49,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:09:49,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:09:50,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:09:51,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:51,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568422039] [2021-10-08 18:09:51,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568422039] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:51,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:09:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671713400] [2021-10-08 18:09:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:09:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:09:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:09:51,466 INFO L87 Difference]: Start difference. First operand 79644 states and 451123 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:07,926 INFO L93 Difference]: Finished difference Result 157888 states and 806403 transitions. [2021-10-08 18:10:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 18:10:07,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2021-10-08 18:10:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:09,847 INFO L225 Difference]: With dead ends: 157888 [2021-10-08 18:10:09,847 INFO L226 Difference]: Without dead ends: 157754 [2021-10-08 18:10:09,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 14062.3ms TimeCoverageRelationStatistics Valid=1340, Invalid=3916, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 18:10:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157754 states. [2021-10-08 18:10:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157754 to 79222. [2021-10-08 18:10:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79222 states, 79221 states have (on average 5.646583607881748) internal successors, (447328), 79221 states have internal predecessors, (447328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79222 states to 79222 states and 447328 transitions. [2021-10-08 18:10:17,006 INFO L78 Accepts]: Start accepts. Automaton has 79222 states and 447328 transitions. Word has length 30 [2021-10-08 18:10:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:17,006 INFO L470 AbstractCegarLoop]: Abstraction has 79222 states and 447328 transitions. [2021-10-08 18:10:17,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 79222 states and 447328 transitions. [2021-10-08 18:10:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:10:18,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:18,120 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:18,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:18,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:18,323 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:10:18,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:18,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1400249929, now seen corresponding path program 49 times [2021-10-08 18:10:18,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:18,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176752959] [2021-10-08 18:10:18,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:10:18,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:18,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:18,325 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:18,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 18:10:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:19,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:10:19,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:10:20,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:10:21,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:21,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176752959] [2021-10-08 18:10:21,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176752959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:21,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:21,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:10:21,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870843962] [2021-10-08 18:10:21,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:10:21,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:10:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:10:21,307 INFO L87 Difference]: Start difference. First operand 79222 states and 447328 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:34,746 INFO L93 Difference]: Finished difference Result 121520 states and 634865 transitions. [2021-10-08 18:10:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 18:10:34,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2021-10-08 18:10:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:36,883 INFO L225 Difference]: With dead ends: 121520 [2021-10-08 18:10:36,884 INFO L226 Difference]: Without dead ends: 121126 [2021-10-08 18:10:36,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 11031.0ms TimeCoverageRelationStatistics Valid=1108, Invalid=3052, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 18:10:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121126 states. [2021-10-08 18:10:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121126 to 80436. [2021-10-08 18:10:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80436 states, 80435 states have (on average 5.653981475725741) internal successors, (454778), 80435 states have internal predecessors, (454778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80436 states to 80436 states and 454778 transitions. [2021-10-08 18:10:43,873 INFO L78 Accepts]: Start accepts. Automaton has 80436 states and 454778 transitions. Word has length 30 [2021-10-08 18:10:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:43,873 INFO L470 AbstractCegarLoop]: Abstraction has 80436 states and 454778 transitions. [2021-10-08 18:10:43,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 80436 states and 454778 transitions. [2021-10-08 18:10:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:10:44,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:44,200 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:44,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:44,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:44,407 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:10:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:44,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1301494083, now seen corresponding path program 50 times [2021-10-08 18:10:44,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:44,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672412831] [2021-10-08 18:10:44,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:10:44,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:44,411 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:44,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 18:10:46,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:10:46,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:46,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:10:46,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:10:47,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:10:48,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:48,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672412831] [2021-10-08 18:10:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672412831] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:48,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:10:48,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788622086] [2021-10-08 18:10:48,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:10:48,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:10:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:10:48,058 INFO L87 Difference]: Start difference. First operand 80436 states and 454778 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:58,800 INFO L93 Difference]: Finished difference Result 115582 states and 608607 transitions. [2021-10-08 18:10:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 18:10:58,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2021-10-08 18:10:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:59,694 INFO L225 Difference]: With dead ends: 115582 [2021-10-08 18:10:59,694 INFO L226 Difference]: Without dead ends: 115090 [2021-10-08 18:10:59,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 8214.6ms TimeCoverageRelationStatistics Valid=840, Invalid=2130, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:11:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115090 states. [2021-10-08 18:11:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115090 to 81882. [2021-10-08 18:11:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81882 states, 81881 states have (on average 5.6808783478462646) internal successors, (465156), 81881 states have internal predecessors, (465156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81882 states to 81882 states and 465156 transitions. [2021-10-08 18:11:05,855 INFO L78 Accepts]: Start accepts. Automaton has 81882 states and 465156 transitions. Word has length 30 [2021-10-08 18:11:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:05,858 INFO L470 AbstractCegarLoop]: Abstraction has 81882 states and 465156 transitions. [2021-10-08 18:11:05,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 81882 states and 465156 transitions. [2021-10-08 18:11:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:11:06,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:06,221 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:06,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:06,427 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:11:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash 807337203, now seen corresponding path program 51 times [2021-10-08 18:11:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:06,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350833872] [2021-10-08 18:11:06,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:11:06,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:06,431 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:06,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 18:11:07,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:11:07,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:07,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:11:07,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:08,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:09,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:09,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350833872] [2021-10-08 18:11:09,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350833872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:09,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:09,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:11:09,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95677069] [2021-10-08 18:11:09,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:11:09,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:11:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:11:09,207 INFO L87 Difference]: Start difference. First operand 81882 states and 465156 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:12,815 INFO L93 Difference]: Finished difference Result 104964 states and 563889 transitions. [2021-10-08 18:11:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:11:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 30 [2021-10-08 18:11:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:14,066 INFO L225 Difference]: With dead ends: 104964 [2021-10-08 18:11:14,066 INFO L226 Difference]: Without dead ends: 102058 [2021-10-08 18:11:14,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2020.3ms TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:11:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102058 states. [2021-10-08 18:11:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102058 to 84598. [2021-10-08 18:11:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84598 states, 84597 states have (on average 5.7062543589016155) internal successors, (482732), 84597 states have internal predecessors, (482732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84598 states to 84598 states and 482732 transitions. [2021-10-08 18:11:19,788 INFO L78 Accepts]: Start accepts. Automaton has 84598 states and 482732 transitions. Word has length 30 [2021-10-08 18:11:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:19,788 INFO L470 AbstractCegarLoop]: Abstraction has 84598 states and 482732 transitions. [2021-10-08 18:11:19,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 84598 states and 482732 transitions. [2021-10-08 18:11:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:11:20,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:20,158 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:20,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:20,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:20,359 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:11:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash 58032927, now seen corresponding path program 52 times [2021-10-08 18:11:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:20,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414622462] [2021-10-08 18:11:20,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:11:20,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:20,362 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:20,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 18:11:21,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:11:21,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:21,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:11:21,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:11:22,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:11:23,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:23,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414622462] [2021-10-08 18:11:23,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414622462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:23,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:23,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-08 18:11:23,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451014492] [2021-10-08 18:11:23,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:11:23,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:11:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:11:23,652 INFO L87 Difference]: Start difference. First operand 84598 states and 482732 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:35,333 INFO L93 Difference]: Finished difference Result 153306 states and 789149 transitions. [2021-10-08 18:11:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 18:11:35,334 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2021-10-08 18:11:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:37,231 INFO L225 Difference]: With dead ends: 153306 [2021-10-08 18:11:37,231 INFO L226 Difference]: Without dead ends: 152968 [2021-10-08 18:11:37,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 8904.9ms TimeCoverageRelationStatistics Valid=740, Invalid=2122, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 18:11:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152968 states. [2021-10-08 18:11:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152968 to 84740. [2021-10-08 18:11:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84740 states, 84739 states have (on average 5.71188000802464) internal successors, (484019), 84739 states have internal predecessors, (484019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84740 states to 84740 states and 484019 transitions. [2021-10-08 18:11:45,230 INFO L78 Accepts]: Start accepts. Automaton has 84740 states and 484019 transitions. Word has length 30 [2021-10-08 18:11:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:45,231 INFO L470 AbstractCegarLoop]: Abstraction has 84740 states and 484019 transitions. [2021-10-08 18:11:45,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 84740 states and 484019 transitions. [2021-10-08 18:11:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:11:45,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:45,637 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:45,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-08 18:11:45,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:45,838 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:11:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 989326403, now seen corresponding path program 53 times [2021-10-08 18:11:45,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:45,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912363891] [2021-10-08 18:11:45,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:11:45,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:45,842 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:45,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 18:11:47,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:11:47,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:47,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:11:47,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:11:47,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:11:49,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:49,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912363891] [2021-10-08 18:11:49,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912363891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:49,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:49,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:11:49,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784828614] [2021-10-08 18:11:49,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:11:49,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:11:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:11:49,222 INFO L87 Difference]: Start difference. First operand 84740 states and 484019 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:58,796 INFO L93 Difference]: Finished difference Result 183338 states and 954182 transitions. [2021-10-08 18:11:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:11:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 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 30 [2021-10-08 18:11:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:01,551 INFO L225 Difference]: With dead ends: 183338 [2021-10-08 18:12:01,551 INFO L226 Difference]: Without dead ends: 181592 [2021-10-08 18:12:01,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 5668.3ms TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 18:12:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181592 states. [2021-10-08 18:12:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181592 to 117240. [2021-10-08 18:12:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117240 states, 117239 states have (on average 5.657562756420645) internal successors, (663287), 117239 states have internal predecessors, (663287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117240 states to 117240 states and 663287 transitions. [2021-10-08 18:12:12,612 INFO L78 Accepts]: Start accepts. Automaton has 117240 states and 663287 transitions. Word has length 30 [2021-10-08 18:12:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:12,612 INFO L470 AbstractCegarLoop]: Abstraction has 117240 states and 663287 transitions. [2021-10-08 18:12:12,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 117240 states and 663287 transitions. [2021-10-08 18:12:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:12:13,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:13,261 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:13,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Ended with exit code 0 [2021-10-08 18:12:13,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:13,461 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:12:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1932426677, now seen corresponding path program 54 times [2021-10-08 18:12:13,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:13,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983915995] [2021-10-08 18:12:13,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:12:13,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:13,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:13,465 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 18:12:15,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:12:15,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:15,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:12:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:15,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:16,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:16,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983915995] [2021-10-08 18:12:16,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983915995] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:16,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:16,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:12:16,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548315578] [2021-10-08 18:12:16,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:12:16,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:12:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:12:16,337 INFO L87 Difference]: Start difference. First operand 117240 states and 663287 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:19,900 INFO L93 Difference]: Finished difference Result 164012 states and 899655 transitions. [2021-10-08 18:12:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:12:19,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 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 30 [2021-10-08 18:12:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:21,949 INFO L225 Difference]: With dead ends: 164012 [2021-10-08 18:12:21,949 INFO L226 Difference]: Without dead ends: 160698 [2021-10-08 18:12:21,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1389.1ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160698 states. [2021-10-08 18:12:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160698 to 120970. [2021-10-08 18:12:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120970 states, 120969 states have (on average 5.726880440443419) internal successors, (692775), 120969 states have internal predecessors, (692775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120970 states to 120970 states and 692775 transitions. [2021-10-08 18:12:31,834 INFO L78 Accepts]: Start accepts. Automaton has 120970 states and 692775 transitions. Word has length 30 [2021-10-08 18:12:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:31,834 INFO L470 AbstractCegarLoop]: Abstraction has 120970 states and 692775 transitions. [2021-10-08 18:12:31,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 120970 states and 692775 transitions. [2021-10-08 18:12:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:12:32,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:32,500 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:32,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:32,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:32,713 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:12:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:32,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1211494731, now seen corresponding path program 55 times [2021-10-08 18:12:32,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:32,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520067857] [2021-10-08 18:12:32,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:12:32,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:32,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:32,716 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:32,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 18:12:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:12:34,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:12:34,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:34,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:36,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:36,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520067857] [2021-10-08 18:12:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520067857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:36,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:36,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:12:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857163449] [2021-10-08 18:12:36,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:12:36,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:12:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:12:36,141 INFO L87 Difference]: Start difference. First operand 120970 states and 692775 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:50,575 INFO L93 Difference]: Finished difference Result 221958 states and 1154019 transitions. [2021-10-08 18:12:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 18:12:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2021-10-08 18:12:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:53,200 INFO L225 Difference]: With dead ends: 221958 [2021-10-08 18:12:53,200 INFO L226 Difference]: Without dead ends: 221730 [2021-10-08 18:12:53,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 10074.4ms TimeCoverageRelationStatistics Valid=826, Invalid=2480, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 18:12:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221730 states. [2021-10-08 18:13:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221730 to 125804. [2021-10-08 18:13:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125804 states, 125803 states have (on average 5.754433519073472) internal successors, (723925), 125803 states have internal predecessors, (723925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125804 states to 125804 states and 723925 transitions. [2021-10-08 18:13:07,563 INFO L78 Accepts]: Start accepts. Automaton has 125804 states and 723925 transitions. Word has length 30 [2021-10-08 18:13:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:07,564 INFO L470 AbstractCegarLoop]: Abstraction has 125804 states and 723925 transitions. [2021-10-08 18:13:07,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 125804 states and 723925 transitions. [2021-10-08 18:13:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:13:09,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:09,405 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:09,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-08 18:13:09,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:09,618 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:13:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1972549545, now seen corresponding path program 56 times [2021-10-08 18:13:09,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:09,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232164845] [2021-10-08 18:13:09,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:09,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:09,623 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:09,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 18:13:11,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:11,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:11,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:13:11,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:13:12,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:13:14,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232164845] [2021-10-08 18:13:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232164845] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:13:14,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812522626] [2021-10-08 18:13:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:13:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:13:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:13:14,025 INFO L87 Difference]: Start difference. First operand 125804 states and 723925 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:26,828 INFO L93 Difference]: Finished difference Result 207076 states and 1090699 transitions. [2021-10-08 18:13:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:13:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 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 30 [2021-10-08 18:13:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:29,471 INFO L225 Difference]: With dead ends: 207076 [2021-10-08 18:13:29,472 INFO L226 Difference]: Without dead ends: 207026 [2021-10-08 18:13:29,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 8474.8ms TimeCoverageRelationStatistics Valid=625, Invalid=1631, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:13:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207026 states. [2021-10-08 18:13:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207026 to 128436. [2021-10-08 18:13:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128436 states, 128435 states have (on average 5.75799431619107) internal successors, (739528), 128435 states have internal predecessors, (739528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128436 states to 128436 states and 739528 transitions. [2021-10-08 18:13:42,274 INFO L78 Accepts]: Start accepts. Automaton has 128436 states and 739528 transitions. Word has length 30 [2021-10-08 18:13:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:42,274 INFO L470 AbstractCegarLoop]: Abstraction has 128436 states and 739528 transitions. [2021-10-08 18:13:42,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 128436 states and 739528 transitions. [2021-10-08 18:13:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:13:43,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:43,502 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:43,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:43,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:43,703 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:13:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1933996663, now seen corresponding path program 57 times [2021-10-08 18:13:43,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:43,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140794832] [2021-10-08 18:13:43,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:13:43,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:43,705 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:43,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 18:13:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:13:45,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:45,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:13:45,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:45,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:46,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:46,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140794832] [2021-10-08 18:13:46,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140794832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:46,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:46,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:13:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986428099] [2021-10-08 18:13:46,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:13:46,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:13:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:13:46,125 INFO L87 Difference]: Start difference. First operand 128436 states and 739528 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 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 18:13:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:51,696 INFO L93 Difference]: Finished difference Result 189824 states and 1003711 transitions. [2021-10-08 18:13:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:13:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 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 30 [2021-10-08 18:13:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2021-10-08 18:13:54,763 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 18:13:54,763 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:13:55,010 INFO L225 Difference]: With dead ends: 189824 [2021-10-08 18:13:55,011 INFO L226 Difference]: Without dead ends: 189574 [2021-10-08 18:13:55,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1698.5ms TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:13:55,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:55,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189574 states. [2021-10-08 18:13:56,064 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:56,065 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-08 18:13:56,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:13:56,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:13:56,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:13:56,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:13:56,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:13:56,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:13:56,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:13:56,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:13:56,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:13:56,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:13:56,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 18:13:56,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:56,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:13:56,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:13:56,077 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 18:13:56,077 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 18:13:56,092 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:13:56,093 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:13:56,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:13:56 BasicIcfg [2021-10-08 18:13:56,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:13:56,100 INFO L168 Benchmark]: Toolchain (without parser) took 665208.59 ms. Allocated memory was 162.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 137.9 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.1 GB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,101 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 162.5 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:13:56,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.44 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 126.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.93 ms. Allocated memory is still 162.5 MB. Free memory was 126.1 MB in the beginning and 124.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,106 INFO L168 Benchmark]: Boogie Preprocessor took 75.80 ms. Allocated memory is still 162.5 MB. Free memory was 124.4 MB in the beginning and 122.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,108 INFO L168 Benchmark]: RCFGBuilder took 910.62 ms. Allocated memory is still 162.5 MB. Free memory was 122.8 MB in the beginning and 136.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,108 INFO L168 Benchmark]: TraceAbstraction took 663700.03 ms. Allocated memory was 162.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 136.3 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.1 GB. Max. memory is 8.0 GB. [2021-10-08 18:13:56,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 162.5 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 414.44 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 126.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 89.93 ms. Allocated memory is still 162.5 MB. Free memory was 126.1 MB in the beginning and 124.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.80 ms. Allocated memory is still 162.5 MB. Free memory was 124.4 MB in the beginning and 122.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 910.62 ms. Allocated memory is still 162.5 MB. Free memory was 122.8 MB in the beginning and 136.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 663700.03 ms. Allocated memory was 162.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 136.3 MB in the beginning and 4.2 GB in the end (delta: -4.1 GB). Peak memory consumption was 4.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18409.1ms, 142 PlacesBefore, 56 PlacesAfterwards, 139 TransitionsBefore, 47 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 129 TotalNumberOfCompositions, 2094 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2094, positive: 2094, positive conditional: 0, positive unconditional: 2094, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1047, positive: 1047, positive conditional: 0, positive unconditional: 1047, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1047, positive: 1047, positive conditional: 0, positive unconditional: 1047, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2094, positive: 1047, positive conditional: 0, positive unconditional: 1047, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1047, unknown conditional: 0, unknown unconditional: 1047] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 105]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 154 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 663440.1ms, OverallIterations: 79, TraceHistogramMax: 3, EmptinessCheckTime: 15971.3ms, AutomataDifference: 294592.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18509.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5567 SDtfs, 22756 SDslu, 34994 SDs, 0 SdLazy, 13965 SolverSat, 4024 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41048.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4869 GetRequests, 2959 SyntacticMatches, 0 SemanticMatches, 1910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15964 ImplicationChecksByTransitivity, 180396.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128436occurred in iteration=78, InterpolantAutomatonStates: 1874, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 175764.5ms AutomataMinimizationTime, 79 MinimizatonAttempts, 1367906 StatesRemovedByMinimization, 65 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 905.9ms SsaConstructionTime, 13701.3ms SatisfiabilityAnalysisTime, 83870.3ms InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1935 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 3744 ConstructedInterpolants, 8 QuantifiedInterpolants, 36706 SizeOfPredicates, 450 NumberOfNonLiveVariables, 10437 ConjunctsInSsa, 952 ConjunctsInUnsatCore, 158 InterpolantComputations, 24 PerfectInterpolantSequences, 588/1268 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 !SESSION 2021-10-08 18:02:47.173 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Eclipse Foundation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_GB Framework arguments: -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c Command-line arguments: -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c !ENTRY org.eclipse.osgi 4 0 2021-10-08 18:13:56.187 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41738e7d9/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41738e7d9/.metadata/.log.