/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/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:30:26,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:30:26,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:30:26,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 20:30:26,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 20:30:27,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 20:30:27,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 20:30:27,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 20:30:27,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 20:30:27,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 20:30:27,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 20:30:27,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 20:30:27,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:30:27,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:30:27,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:30:27,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:30:27,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:30:27,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:30:27,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:30:27,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:30:27,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:30:27,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:30:27,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:30:27,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:30:27,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 20:30:27,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 20:30:27,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 20:30:27,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 20:30:27,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 20:30:27,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 20:30:27,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 20:30:27,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 20:30:27,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 20:30:27,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 20:30:27,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 20:30:27,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 20:30:27,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 20:30:27,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 20:30:27,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:30:27,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:30:27,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:30:27,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:30:27,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:30:27,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:30:27,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:30:27,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:30:27,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:30:27,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:30:27,145 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:30:27,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:30:27,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:30:27,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:30:27,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:30:27,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:30:27,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:30:27,147 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:30:27,148 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:30:27,148 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:30:27,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:30:27,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:30:27,149 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:30:27,149 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:30:27,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:30:27,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:30:27,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:30:27,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:30:27,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:30:27,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:30:27,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:30:27,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:30:27,150 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:30:27,151 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:30:27,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:30:27,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:30:27,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:30:27,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:30:27,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:30:27,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:30:27,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:30:27,554 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:30:27,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-13 20:30:27,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9343b8691/6da37dd2be8f4201aeabffb56698a620/FLAGe2f0e9cb4 [2021-10-13 20:30:28,193 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:30:28,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-13 20:30:28,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9343b8691/6da37dd2be8f4201aeabffb56698a620/FLAGe2f0e9cb4 [2021-10-13 20:30:28,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9343b8691/6da37dd2be8f4201aeabffb56698a620 [2021-10-13 20:30:28,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:30:28,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:30:28,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:30:28,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:30:28,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:30:28,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389e36ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28, skipping insertion in model container [2021-10-13 20:30:28,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:30:28,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:30:28,824 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/parallel-misc-4.wvr.c[2422,2435] [2021-10-13 20:30:28,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:30:28,843 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:30:28,869 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/parallel-misc-4.wvr.c[2422,2435] [2021-10-13 20:30:28,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:30:28,890 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:30:28,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28 WrapperNode [2021-10-13 20:30:28,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:30:28,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:30:28,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:30:28,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:30:28,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:30:28,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:30:28,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:30:28,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:30:28,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:30:28,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:30:28,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:30:28,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:30:28,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (1/1) ... [2021-10-13 20:30:28,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:30:28,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:30:29,019 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) [2021-10-13 20:30:29,045 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 [2021-10-13 20:30:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:30:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:30:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:30:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:30:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 20:30:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 20:30:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:30:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:30:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:30:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:30:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:30:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:30:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:30:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:30:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:30:29,107 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:30:29,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:30:29,659 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 20:30:29,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:29 BoogieIcfgContainer [2021-10-13 20:30:29,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:30:29,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:30:29,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:30:29,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:30:29,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:30:28" (1/3) ... [2021-10-13 20:30:29,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c987b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:29, skipping insertion in model container [2021-10-13 20:30:29,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:28" (2/3) ... [2021-10-13 20:30:29,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c987b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:29, skipping insertion in model container [2021-10-13 20:30:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:29" (3/3) ... [2021-10-13 20:30:29,673 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2021-10-13 20:30:29,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:30:29,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-13 20:30:29,683 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:30:29,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,746 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,746 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,746 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,760 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:30:29,782 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 20:30:29,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:30:29,866 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 [2021-10-13 20:30:29,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-13 20:30:29,892 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:30:29,904 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-13 20:30:29,907 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-13 20:30:29,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 244 flow [2021-10-13 20:30:29,960 INFO L129 PetriNetUnfolder]: 7/107 cut-off events. [2021-10-13 20:30:29,961 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 20:30:29,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-10-13 20:30:29,968 INFO L116 LiptonReduction]: Number of co-enabled transitions 1190 [2021-10-13 20:30:40,737 INFO L131 LiptonReduction]: Checked pairs total: 2874 [2021-10-13 20:30:40,738 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-13 20:30:40,748 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-13 20:30:40,780 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 20:30:40,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:40,798 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 20:30:40,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:40,805 INFO L82 PathProgramCache]: Analyzing trace with hash 413, now seen corresponding path program 1 times [2021-10-13 20:30:40,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:40,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978664733] [2021-10-13 20:30:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:40,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:40,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:40,825 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) [2021-10-13 20:30:40,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:30:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:40,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 20:30:40,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:40,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:40,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:40,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978664733] [2021-10-13 20:30:40,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978664733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:40,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:40,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 20:30:40,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394339652] [2021-10-13 20:30:40,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 20:30:40,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:40,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 20:30:40,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:30:40,917 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 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) [2021-10-13 20:30:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:40,949 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-13 20:30:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 20:30:40,951 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 [2021-10-13 20:30:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:40,967 INFO L225 Difference]: With dead ends: 252 [2021-10-13 20:30:40,968 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 20:30:40,969 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 [2021-10-13 20:30:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 20:30:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-13 20:30:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-13 20:30:41,046 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-13 20:30:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:41,046 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-13 20:30:41,046 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) [2021-10-13 20:30:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-13 20:30:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:30:41,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:41,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:30:41,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 20:30:41,248 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 [2021-10-13 20:30:41,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash 404918, now seen corresponding path program 1 times [2021-10-13 20:30:41,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:41,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026609709] [2021-10-13 20:30:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:41,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:41,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:41,255 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) [2021-10-13 20:30:41,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:30:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:41,473 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:41,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:41,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:41,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:41,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026609709] [2021-10-13 20:30:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026609709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:41,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:30:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527421421] [2021-10-13 20:30:41,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:30:41,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:30:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:41,568 INFO L87 Difference]: Start difference. First operand 252 states and 844 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:41,624 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-13 20:30:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 20:30:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:41,630 INFO L225 Difference]: With dead ends: 240 [2021-10-13 20:30:41,630 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 20:30:41,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 20:30:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-13 20:30:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-13 20:30:41,680 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-13 20:30:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:41,684 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-13 20:30:41,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-13 20:30:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:30:41,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:41,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:30:41,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 20:30:41,887 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 [2021-10-13 20:30:41,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 404916, now seen corresponding path program 1 times [2021-10-13 20:30:41,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:41,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499676184] [2021-10-13 20:30:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:41,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:41,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:41,892 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) [2021-10-13 20:30:41,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:30:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:41,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:42,119 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:42,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-13 20:30:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:42,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:42,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:42,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499676184] [2021-10-13 20:30:42,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499676184] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:42,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:42,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:42,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694016976] [2021-10-13 20:30:42,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:42,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:42,302 INFO L87 Difference]: Start difference. First operand 240 states and 813 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) [2021-10-13 20:30:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:42,343 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-13 20:30:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:42,344 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 [2021-10-13 20:30:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:42,348 INFO L225 Difference]: With dead ends: 228 [2021-10-13 20:30:42,348 INFO L226 Difference]: Without dead ends: 228 [2021-10-13 20:30:42,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-13 20:30:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-13 20:30:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-13 20:30:42,365 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-13 20:30:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:42,366 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-13 20:30:42,366 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) [2021-10-13 20:30:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-13 20:30:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:30:42,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:42,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:30:42,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:42,580 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 [2021-10-13 20:30:42,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:42,582 INFO L82 PathProgramCache]: Analyzing trace with hash 389134153, now seen corresponding path program 1 times [2021-10-13 20:30:42,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:42,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531005980] [2021-10-13 20:30:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:42,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:42,585 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) [2021-10-13 20:30:42,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:30:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:42,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:30:42,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:42,683 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:42,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:42,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:42,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:42,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531005980] [2021-10-13 20:30:42,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531005980] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:42,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:42,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:30:42,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949194565] [2021-10-13 20:30:42,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:30:42,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:30:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:42,757 INFO L87 Difference]: Start difference. First operand 228 states and 782 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) [2021-10-13 20:30:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:42,807 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-13 20:30:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:42,808 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 [2021-10-13 20:30:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:42,811 INFO L225 Difference]: With dead ends: 210 [2021-10-13 20:30:42,811 INFO L226 Difference]: Without dead ends: 210 [2021-10-13 20:30:42,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:30:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-13 20:30:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-13 20:30:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-13 20:30:42,834 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-13 20:30:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:42,834 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-13 20:30:42,835 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) [2021-10-13 20:30:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-13 20:30:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:30:42,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:42,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:30:42,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:43,047 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 [2021-10-13 20:30:43,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:43,049 INFO L82 PathProgramCache]: Analyzing trace with hash 389134154, now seen corresponding path program 1 times [2021-10-13 20:30:43,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:43,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283811462] [2021-10-13 20:30:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:43,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:43,056 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) [2021-10-13 20:30:43,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:30:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:43,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:43,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:43,250 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:43,250 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-13 20:30:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:43,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:43,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:43,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283811462] [2021-10-13 20:30:43,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283811462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:43,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:43,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:43,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956045299] [2021-10-13 20:30:43,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:43,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:43,452 INFO L87 Difference]: Start difference. First operand 210 states and 723 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) [2021-10-13 20:30:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:43,479 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-13 20:30:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:43,480 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 [2021-10-13 20:30:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:43,482 INFO L225 Difference]: With dead ends: 192 [2021-10-13 20:30:43,482 INFO L226 Difference]: Without dead ends: 192 [2021-10-13 20:30:43,483 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 [2021-10-13 20:30:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-13 20:30:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-13 20:30:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-13 20:30:43,493 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-13 20:30:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:43,494 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-13 20:30:43,494 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) [2021-10-13 20:30:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-13 20:30:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:30:43,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:43,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:43,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:43,711 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 [2021-10-13 20:30:43,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash 295777236, now seen corresponding path program 1 times [2021-10-13 20:30:43,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:43,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147833065] [2021-10-13 20:30:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:43,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:43,716 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) [2021-10-13 20:30:43,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:30:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:43,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:43,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:43,994 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:30:43,994 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 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-13 20:30:44,004 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 60 treesize of output 58 [2021-10-13 20:30:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:44,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:44,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:44,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147833065] [2021-10-13 20:30:44,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147833065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:44,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:44,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:30:44,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650518175] [2021-10-13 20:30:44,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:44,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:44,310 INFO L87 Difference]: Start difference. First operand 192 states and 664 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) [2021-10-13 20:30:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:44,336 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-13 20:30:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:44,337 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 [2021-10-13 20:30:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:44,339 INFO L225 Difference]: With dead ends: 160 [2021-10-13 20:30:44,340 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 20:30:44,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 20:30:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-13 20:30:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 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) [2021-10-13 20:30:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-13 20:30:44,347 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-13 20:30:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:44,348 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-13 20:30:44,348 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) [2021-10-13 20:30:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-13 20:30:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:30:44,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:44,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:44,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:44,561 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 [2021-10-13 20:30:44,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:44,563 INFO L82 PathProgramCache]: Analyzing trace with hash 295777237, now seen corresponding path program 1 times [2021-10-13 20:30:44,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:44,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936588804] [2021-10-13 20:30:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:44,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:44,567 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) [2021-10-13 20:30:44,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:30:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:30:44,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:44,676 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:30:44,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:30:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:44,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:44,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:44,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936588804] [2021-10-13 20:30:44,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936588804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:44,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:44,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:44,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006327957] [2021-10-13 20:30:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:30:44,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:30:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:44,820 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:44,855 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-13 20:30:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:30:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 20:30:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:44,858 INFO L225 Difference]: With dead ends: 128 [2021-10-13 20:30:44,858 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 20:30:44,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 20:30:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-13 20:30:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-13 20:30:44,865 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-13 20:30:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:44,865 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-13 20:30:44,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-13 20:30:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:30:44,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:44,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:44,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:45,081 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 [2021-10-13 20:30:45,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:45,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1826700178, now seen corresponding path program 1 times [2021-10-13 20:30:45,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:45,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971387967] [2021-10-13 20:30:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:45,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:45,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:45,084 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) [2021-10-13 20:30:45,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:30:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:45,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:45,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:45,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:45,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971387967] [2021-10-13 20:30:45,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971387967] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:45,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:45,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:45,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006620742] [2021-10-13 20:30:45,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:45,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:45,251 INFO L87 Difference]: Start difference. First operand 128 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:45,280 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-13 20:30:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:30:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:30:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:45,282 INFO L225 Difference]: With dead ends: 124 [2021-10-13 20:30:45,282 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 20:30:45,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 20:30:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-13 20:30:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-13 20:30:45,288 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-13 20:30:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:45,289 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-13 20:30:45,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-13 20:30:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:30:45,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:45,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:45,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:45,505 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 [2021-10-13 20:30:45,505 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash -293618728, now seen corresponding path program 2 times [2021-10-13 20:30:45,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:45,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370591168] [2021-10-13 20:30:45,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:30:45,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:45,508 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) [2021-10-13 20:30:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:30:45,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:30:45,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:30:45,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:30:45,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:45,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:45,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370591168] [2021-10-13 20:30:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370591168] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:45,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 20:30:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730215936] [2021-10-13 20:30:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:30:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:30:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:30:45,746 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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) [2021-10-13 20:30:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:45,820 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-13 20:30:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:30:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 16 [2021-10-13 20:30:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:45,823 INFO L225 Difference]: With dead ends: 218 [2021-10-13 20:30:45,823 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 20:30:45,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:30:45,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 20:30:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-13 20:30:45,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-13 20:30:45,831 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-13 20:30:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:45,832 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-13 20:30:45,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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) [2021-10-13 20:30:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-13 20:30:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:30:45,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:45,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:45,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-13 20:30:46,045 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 [2021-10-13 20:30:46,045 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:46,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:46,046 INFO L82 PathProgramCache]: Analyzing trace with hash 399276935, now seen corresponding path program 1 times [2021-10-13 20:30:46,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:46,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988694048] [2021-10-13 20:30:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:46,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:46,048 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) [2021-10-13 20:30:46,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:30:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:46,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:46,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:46,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:46,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:46,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988694048] [2021-10-13 20:30:46,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988694048] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:46,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:46,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:46,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451838937] [2021-10-13 20:30:46,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:46,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:46,211 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2021-10-13 20:30:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:46,223 INFO L93 Difference]: Finished difference Result 242 states and 682 transitions. [2021-10-13 20:30:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:30:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 18 [2021-10-13 20:30:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:46,225 INFO L225 Difference]: With dead ends: 242 [2021-10-13 20:30:46,226 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 20:30:46,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 20:30:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-10-13 20:30:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-10-13 20:30:46,235 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 18 [2021-10-13 20:30:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:46,235 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-10-13 20:30:46,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2021-10-13 20:30:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-10-13 20:30:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:30:46,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:46,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:46,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:46,448 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 [2021-10-13 20:30:46,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:46,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1301348123, now seen corresponding path program 1 times [2021-10-13 20:30:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:46,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503202370] [2021-10-13 20:30:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:46,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:46,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:46,452 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) [2021-10-13 20:30:46,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:30:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:30:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:46,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:46,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:46,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503202370] [2021-10-13 20:30:46,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503202370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:30:46,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:30:46,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:30:46,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067253132] [2021-10-13 20:30:46,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:30:46,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:30:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:46,634 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 4 states, 4 states have (on average 5.75) 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) [2021-10-13 20:30:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:46,646 INFO L93 Difference]: Finished difference Result 232 states and 642 transitions. [2021-10-13 20:30:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:30:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) 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 18 [2021-10-13 20:30:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:46,649 INFO L225 Difference]: With dead ends: 232 [2021-10-13 20:30:46,649 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 20:30:46,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:30:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 20:30:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2021-10-13 20:30:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 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) [2021-10-13 20:30:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-13 20:30:46,658 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-13 20:30:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:46,658 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-13 20:30:46,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) 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) [2021-10-13 20:30:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-13 20:30:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:30:46,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:46,660 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:46,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:46,871 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 [2021-10-13 20:30:46,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:46,873 INFO L82 PathProgramCache]: Analyzing trace with hash 625578938, now seen corresponding path program 1 times [2021-10-13 20:30:46,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:46,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797907240] [2021-10-13 20:30:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:46,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:46,875 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) [2021-10-13 20:30:46,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:30:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:46,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:30:46,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:47,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:47,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:47,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797907240] [2021-10-13 20:30:47,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797907240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:47,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:47,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-13 20:30:47,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629330463] [2021-10-13 20:30:47,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:30:47,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:30:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:47,129 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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) [2021-10-13 20:30:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:47,157 INFO L93 Difference]: Finished difference Result 222 states and 591 transitions. [2021-10-13 20:30:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:30:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 20 [2021-10-13 20:30:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:47,160 INFO L225 Difference]: With dead ends: 222 [2021-10-13 20:30:47,160 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 20:30:47,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 20:30:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2021-10-13 20:30:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.773480662983425) internal successors, (502), 181 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 502 transitions. [2021-10-13 20:30:47,169 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 502 transitions. Word has length 20 [2021-10-13 20:30:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:47,169 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 502 transitions. [2021-10-13 20:30:47,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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) [2021-10-13 20:30:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 502 transitions. [2021-10-13 20:30:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:30:47,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:47,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:47,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:47,383 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 [2021-10-13 20:30:47,383 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1392507048, now seen corresponding path program 1 times [2021-10-13 20:30:47,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:47,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464877506] [2021-10-13 20:30:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:47,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:47,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:47,387 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) [2021-10-13 20:30:47,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:30:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:47,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 20:30:47,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:47,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:47,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:47,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464877506] [2021-10-13 20:30:47,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464877506] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:47,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:47,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 20:30:47,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912666070] [2021-10-13 20:30:47,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:30:47,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:30:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:30:47,660 INFO L87 Difference]: Start difference. First operand 182 states and 502 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:47,870 INFO L93 Difference]: Finished difference Result 416 states and 1099 transitions. [2021-10-13 20:30:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:30:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 20:30:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:47,875 INFO L225 Difference]: With dead ends: 416 [2021-10-13 20:30:47,875 INFO L226 Difference]: Without dead ends: 358 [2021-10-13 20:30:47,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:30:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-13 20:30:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 206. [2021-10-13 20:30:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.897560975609756) internal successors, (594), 205 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 594 transitions. [2021-10-13 20:30:47,886 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 594 transitions. Word has length 20 [2021-10-13 20:30:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:47,887 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 594 transitions. [2021-10-13 20:30:47,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 594 transitions. [2021-10-13 20:30:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:30:47,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:47,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:30:47,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:48,101 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 [2021-10-13 20:30:48,101 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash 356766818, now seen corresponding path program 1 times [2021-10-13 20:30:48,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:48,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934845335] [2021-10-13 20:30:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:48,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:48,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:48,105 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) [2021-10-13 20:30:48,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:30:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 20:30:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:48,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:48,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:48,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934845335] [2021-10-13 20:30:48,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934845335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:48,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:48,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 20:30:48,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686455092] [2021-10-13 20:30:48,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:30:48,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:30:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:30:48,427 INFO L87 Difference]: Start difference. First operand 206 states and 594 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:48,879 INFO L93 Difference]: Finished difference Result 1034 states and 2890 transitions. [2021-10-13 20:30:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 20:30:48,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 20:30:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:48,888 INFO L225 Difference]: With dead ends: 1034 [2021-10-13 20:30:48,888 INFO L226 Difference]: Without dead ends: 926 [2021-10-13 20:30:48,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 203.5ms TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:30:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-13 20:30:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 514. [2021-10-13 20:30:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.0331384015594542) internal successors, (1556), 513 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1556 transitions. [2021-10-13 20:30:48,914 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1556 transitions. Word has length 20 [2021-10-13 20:30:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:48,914 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1556 transitions. [2021-10-13 20:30:48,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1556 transitions. [2021-10-13 20:30:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:48,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:48,917 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] [2021-10-13 20:30:48,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:49,130 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 [2021-10-13 20:30:49,130 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:49,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:49,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1078517299, now seen corresponding path program 1 times [2021-10-13 20:30:49,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:49,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575582212] [2021-10-13 20:30:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:49,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:49,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:49,133 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) [2021-10-13 20:30:49,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:30:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:49,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:30:49,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:49,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:49,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:49,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575582212] [2021-10-13 20:30:49,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575582212] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:49,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:49,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 20:30:49,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978127896] [2021-10-13 20:30:49,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:30:49,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:30:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:30:49,458 INFO L87 Difference]: Start difference. First operand 514 states and 1556 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:49,921 INFO L93 Difference]: Finished difference Result 1684 states and 5069 transitions. [2021-10-13 20:30:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:30:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-13 20:30:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:49,935 INFO L225 Difference]: With dead ends: 1684 [2021-10-13 20:30:49,935 INFO L226 Difference]: Without dead ends: 1558 [2021-10-13 20:30:49,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:30:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-10-13 20:30:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1098. [2021-10-13 20:30:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 3.163172288058341) internal successors, (3470), 1097 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 3470 transitions. [2021-10-13 20:30:49,987 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 3470 transitions. Word has length 22 [2021-10-13 20:30:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:49,987 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 3470 transitions. [2021-10-13 20:30:49,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 3470 transitions. [2021-10-13 20:30:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:30:49,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:49,992 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] [2021-10-13 20:30:50,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:50,204 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 [2021-10-13 20:30:50,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash -80678561, now seen corresponding path program 1 times [2021-10-13 20:30:50,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:50,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895885768] [2021-10-13 20:30:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:50,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:50,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:50,212 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) [2021-10-13 20:30:50,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:30:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:50,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:30:50,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:30:50,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:30:50,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:50,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895885768] [2021-10-13 20:30:50,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895885768] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:50,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:50,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-13 20:30:50,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122449102] [2021-10-13 20:30:50,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:30:50,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:30:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:50,548 INFO L87 Difference]: Start difference. First operand 1098 states and 3470 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:50,581 INFO L93 Difference]: Finished difference Result 994 states and 2764 transitions. [2021-10-13 20:30:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:30:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 20:30:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:50,590 INFO L225 Difference]: With dead ends: 994 [2021-10-13 20:30:50,590 INFO L226 Difference]: Without dead ends: 994 [2021-10-13 20:30:50,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:30:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-10-13 20:30:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 914. [2021-10-13 20:30:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.8127053669222346) internal successors, (2568), 913 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2568 transitions. [2021-10-13 20:30:50,623 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2568 transitions. Word has length 22 [2021-10-13 20:30:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:50,623 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 2568 transitions. [2021-10-13 20:30:50,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2568 transitions. [2021-10-13 20:30:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:30:50,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:30:50,627 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] [2021-10-13 20:30:50,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:50,842 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 [2021-10-13 20:30:50,842 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:30:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:30:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash -296105680, now seen corresponding path program 1 times [2021-10-13 20:30:50,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:30:50,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977383410] [2021-10-13 20:30:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:30:50,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:30:50,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:30:50,845 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) [2021-10-13 20:30:50,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:30:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:30:50,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:30:50,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:30:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:51,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:30:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:30:51,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:30:51,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977383410] [2021-10-13 20:30:51,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977383410] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:30:51,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:30:51,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 20:30:51,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082369221] [2021-10-13 20:30:51,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 20:30:51,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:30:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 20:30:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:30:51,230 INFO L87 Difference]: Start difference. First operand 914 states and 2568 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:30:51,387 INFO L93 Difference]: Finished difference Result 902 states and 2534 transitions. [2021-10-13 20:30:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:30:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 20:30:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:30:51,389 INFO L225 Difference]: With dead ends: 902 [2021-10-13 20:30:51,389 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 20:30:51,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:30:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 20:30:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 20:30:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 20:30:51,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-13 20:30:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:30:51,391 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 20:30:51,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:30:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 20:30:51,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 20:30:51,394 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:30:51,395 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:30:51,395 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:30:51,395 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:30:51,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:30:51,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:30:51,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:30:51,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:30:51,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:30:51,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:30:51,398 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:30:51,398 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:30:51,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 20:30:51,609 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 [2021-10-13 20:30:51,615 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:30:51,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:30:51,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:30:51 BasicIcfg [2021-10-13 20:30:51,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:30:51,619 INFO L168 Benchmark]: Toolchain (without parser) took 23056.61 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 130.9 MB in the beginning and 101.7 MB in the end (delta: 29.3 MB). Peak memory consumption was 99.7 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,620 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:30:51,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.51 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 119.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.97 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,621 INFO L168 Benchmark]: Boogie Preprocessor took 32.61 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 116.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,621 INFO L168 Benchmark]: RCFGBuilder took 692.45 ms. Allocated memory is still 156.2 MB. Free memory was 116.4 MB in the beginning and 135.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,622 INFO L168 Benchmark]: TraceAbstraction took 21954.08 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 135.2 MB in the beginning and 101.7 MB in the end (delta: 33.5 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. [2021-10-13 20:30:51,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.51 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 119.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.97 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.61 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 116.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 692.45 ms. Allocated memory is still 156.2 MB. Free memory was 116.4 MB in the beginning and 135.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21954.08 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 135.2 MB in the beginning and 101.7 MB in the end (delta: 33.5 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10830.6ms, 113 PlacesBefore, 47 PlacesAfterwards, 110 TransitionsBefore, 41 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 100 TotalNumberOfCompositions, 2874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1863, positive: 1786, positive conditional: 0, positive unconditional: 1786, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 836, positive: 805, positive conditional: 0, positive unconditional: 805, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 836, positive: 797, positive conditional: 0, positive unconditional: 797, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 195, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1863, positive: 981, positive conditional: 0, positive unconditional: 981, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 836, unknown conditional: 0, unknown unconditional: 836] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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 - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 127 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 21766.7ms, OverallIterations: 17, TraceHistogramMax: 2, EmptinessCheckTime: 41.1ms, AutomataDifference: 1877.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10913.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 452 SDtfs, 1040 SDslu, 705 SDs, 0 SdLazy, 612 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 942.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 817.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1098occurred in iteration=15, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 331.8ms AutomataMinimizationTime, 17 MinimizatonAttempts, 1258 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 175.2ms SsaConstructionTime, 590.6ms SatisfiabilityAnalysisTime, 3185.5ms InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 420 ConstructedInterpolants, 6 QuantifiedInterpolants, 1369 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 34 InterpolantComputations, 22 PerfectInterpolantSequences, 30/56 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 - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 20:30:51,668 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 Received shutdown request...