/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench/exp2x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:11:59,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:11:59,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:11:59,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:12:00,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:12:00,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:12:00,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:12:00,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:12:00,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:12:00,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:12:00,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:12:00,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:12:00,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:12:00,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:12:00,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:12:00,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:12:00,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:12:00,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:12:00,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:12:00,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:12:00,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:12:00,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:12:00,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:12:00,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:12:00,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:12:00,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:12:00,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:12:00,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:12:00,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:12:00,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:12:00,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:12:00,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:12:00,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:12:00,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:12:00,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:12:00,091 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:12:00,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:12:00,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:12:00,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:12:00,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:12:00,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:12:00,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:12:00,096 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:12:00,097 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:12:00,097 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:12:00,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:12:00,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:12:00,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:12:00,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:12:00,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:12:00,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:12:00,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:12:00,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:12:00,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:12:00,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:12:00,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:12:00,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:12:00,101 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:12:00,101 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:12:00,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:12:00,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:12:00,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:12:00,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:12:00,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:12:00,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:12:00,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:12:00,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:12:00,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench/exp2x3.wvr.c [2021-10-06 21:12:00,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0783f17/95348418072645da8359749b8c6b5a8d/FLAG012915cac [2021-10-06 21:12:01,356 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:12:01,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp2x3.wvr.c [2021-10-06 21:12:01,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0783f17/95348418072645da8359749b8c6b5a8d/FLAG012915cac [2021-10-06 21:12:01,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0783f17/95348418072645da8359749b8c6b5a8d [2021-10-06 21:12:01,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:12:01,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:12:01,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:12:01,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:12:01,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:12:01,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:12:01" (1/1) ... [2021-10-06 21:12:01,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210bf9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:01, skipping insertion in model container [2021-10-06 21:12:01,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:12:01" (1/1) ... [2021-10-06 21:12:01,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:12:01,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:12:02,017 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp2x3.wvr.c[2200,2213] [2021-10-06 21:12:02,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:12:02,037 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:12:02,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp2x3.wvr.c[2200,2213] [2021-10-06 21:12:02,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:12:02,090 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:12:02,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02 WrapperNode [2021-10-06 21:12:02,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:12:02,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:12:02,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:12:02,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:12:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:12:02,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:12:02,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:12:02,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:12:02,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:12:02,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:12:02,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:12:02,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:12:02,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (1/1) ... [2021-10-06 21:12:02,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:12:02,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:12:02,221 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) [2021-10-06 21:12:02,247 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 [2021-10-06 21:12:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:12:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:12:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:12:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:12:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:12:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:12:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:12:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 21:12:02,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 21:12:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:12:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:12:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:12:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:12:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:12:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:12:02,303 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:12:02,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:12:02,873 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-06 21:12:02,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:12:02 BoogieIcfgContainer [2021-10-06 21:12:02,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:12:02,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:12:02,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:12:02,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:12:02,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:12:01" (1/3) ... [2021-10-06 21:12:02,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75358607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:12:02, skipping insertion in model container [2021-10-06 21:12:02,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:02" (2/3) ... [2021-10-06 21:12:02,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75358607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:12:02, skipping insertion in model container [2021-10-06 21:12:02,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:12:02" (3/3) ... [2021-10-06 21:12:02,885 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x3.wvr.c [2021-10-06 21:12:02,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:12:02,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-06 21:12:02,891 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:12:02,928 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,928 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,928 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,931 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,934 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,934 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,934 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,935 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,935 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,936 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,936 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,952 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,953 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,958 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,958 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:02,968 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 21:12:03,019 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:12:03,027 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 [2021-10-06 21:12:03,027 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 21:12:03,046 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:12:03,060 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 134 transitions, 300 flow [2021-10-06 21:12:03,063 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 134 transitions, 300 flow [2021-10-06 21:12:03,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 134 transitions, 300 flow [2021-10-06 21:12:03,129 INFO L129 PetriNetUnfolder]: 10/130 cut-off events. [2021-10-06 21:12:03,129 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 21:12:03,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 10/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2021-10-06 21:12:03,139 INFO L116 LiptonReduction]: Number of co-enabled transitions 1608 [2021-10-06 21:12:20,105 INFO L131 LiptonReduction]: Checked pairs total: 1958 [2021-10-06 21:12:20,105 INFO L133 LiptonReduction]: Total number of compositions: 125 [2021-10-06 21:12:20,116 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-06 21:12:20,152 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:12:20,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:20,162 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:12:20,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash 491, now seen corresponding path program 1 times [2021-10-06 21:12:20,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:20,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567869365] [2021-10-06 21:12:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:20,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:20,181 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) [2021-10-06 21:12:20,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:12:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:20,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:12:20,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:20,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:20,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:20,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567869365] [2021-10-06 21:12:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567869365] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:20,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:12:20,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117008414] [2021-10-06 21:12:20,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:12:20,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:12:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:12:20,278 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:20,326 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-06 21:12:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:12:20,327 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 [2021-10-06 21:12:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:20,352 INFO L225 Difference]: With dead ends: 180 [2021-10-06 21:12:20,352 INFO L226 Difference]: Without dead ends: 180 [2021-10-06 21:12:20,354 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 [2021-10-06 21:12:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-06 21:12:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-06 21:12:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-06 21:12:20,429 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-06 21:12:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:20,429 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-06 21:12:20,430 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) [2021-10-06 21:12:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-06 21:12:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:12:20,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:20,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:12:20,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:20,633 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 [2021-10-06 21:12:20,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash 484343, now seen corresponding path program 1 times [2021-10-06 21:12:20,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:20,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786076326] [2021-10-06 21:12:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:20,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:20,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:20,639 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) [2021-10-06 21:12:20,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:12:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:12:20,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:21,113 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:12:21,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 141 [2021-10-06 21:12:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:25,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:25,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:25,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786076326] [2021-10-06 21:12:25,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786076326] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:25,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:25,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:25,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191778916] [2021-10-06 21:12:25,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:25,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:25,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:25,475 INFO L87 Difference]: Start difference. First operand 180 states and 692 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:25,608 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-06 21:12:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:25,609 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 [2021-10-06 21:12:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:25,613 INFO L225 Difference]: With dead ends: 170 [2021-10-06 21:12:25,614 INFO L226 Difference]: Without dead ends: 170 [2021-10-06 21:12:25,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-06 21:12:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-06 21:12:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-06 21:12:25,635 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-06 21:12:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:25,636 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-06 21:12:25,636 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) [2021-10-06 21:12:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-06 21:12:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:12:25,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:25,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:12:25,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:25,849 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 [2021-10-06 21:12:25,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 484344, now seen corresponding path program 1 times [2021-10-06 21:12:25,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584600437] [2021-10-06 21:12:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:25,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:25,854 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) [2021-10-06 21:12:25,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:12:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:25,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:12:25,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:26,132 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-06 21:12:26,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 78 [2021-10-06 21:12:26,139 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 126 treesize of output 124 [2021-10-06 21:12:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:27,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:27,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:27,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584600437] [2021-10-06 21:12:27,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584600437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:27,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:27,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:27,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064008102] [2021-10-06 21:12:27,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:27,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:27,318 INFO L87 Difference]: Start difference. First operand 170 states and 656 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:27,397 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-06 21:12:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:27,398 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 [2021-10-06 21:12:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:27,401 INFO L225 Difference]: With dead ends: 160 [2021-10-06 21:12:27,402 INFO L226 Difference]: Without dead ends: 160 [2021-10-06 21:12:27,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-06 21:12:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-06 21:12:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-06 21:12:27,418 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-06 21:12:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:27,419 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-06 21:12:27,419 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) [2021-10-06 21:12:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-06 21:12:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:12:27,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:27,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:12:27,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:27,633 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 [2021-10-06 21:12:27,633 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:27,635 INFO L82 PathProgramCache]: Analyzing trace with hash 465463352, now seen corresponding path program 1 times [2021-10-06 21:12:27,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:27,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722210066] [2021-10-06 21:12:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:27,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:27,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:27,638 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) [2021-10-06 21:12:27,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:12:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:27,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:12:27,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:27,917 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-06 21:12:27,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 82 [2021-10-06 21:12:27,928 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 218 treesize of output 210 [2021-10-06 21:12:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:28,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:28,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:28,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722210066] [2021-10-06 21:12:28,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722210066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:28,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:28,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:28,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386440259] [2021-10-06 21:12:28,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:28,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:28,588 INFO L87 Difference]: Start difference. First operand 160 states and 620 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) [2021-10-06 21:12:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:28,655 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-06 21:12:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:28,656 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 [2021-10-06 21:12:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:28,659 INFO L225 Difference]: With dead ends: 152 [2021-10-06 21:12:28,659 INFO L226 Difference]: Without dead ends: 152 [2021-10-06 21:12:28,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-06 21:12:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-06 21:12:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-06 21:12:28,687 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-06 21:12:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:28,687 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-06 21:12:28,688 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) [2021-10-06 21:12:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-06 21:12:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:12:28,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:28,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:12:28,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:28,901 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 [2021-10-06 21:12:28,901 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash 465463353, now seen corresponding path program 1 times [2021-10-06 21:12:28,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:28,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093510507] [2021-10-06 21:12:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:28,907 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:28,908 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) [2021-10-06 21:12:28,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:12:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:28,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:12:28,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:29,220 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:12:29,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 1327 treesize of output 1340 [2021-10-06 21:12:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:37,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:37,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:37,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093510507] [2021-10-06 21:12:37,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093510507] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:37,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:37,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:37,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250934636] [2021-10-06 21:12:37,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:37,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:37,203 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:37,286 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-06 21:12:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:37,287 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 [2021-10-06 21:12:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:37,289 INFO L225 Difference]: With dead ends: 144 [2021-10-06 21:12:37,289 INFO L226 Difference]: Without dead ends: 144 [2021-10-06 21:12:37,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-06 21:12:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-06 21:12:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-06 21:12:37,301 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-06 21:12:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:37,301 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-06 21:12:37,301 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) [2021-10-06 21:12:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-06 21:12:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:12:37,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:37,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:37,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-06 21:12:37,514 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 [2021-10-06 21:12:37,515 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 633695052, now seen corresponding path program 1 times [2021-10-06 21:12:37,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:37,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765158542] [2021-10-06 21:12:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:37,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:37,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:37,519 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) [2021-10-06 21:12:37,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:12:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:37,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:12:37,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:37,807 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:12:37,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 21:12:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:37,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:37,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:37,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765158542] [2021-10-06 21:12:37,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765158542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:37,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:37,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:37,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239062080] [2021-10-06 21:12:37,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:37,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:37,986 INFO L87 Difference]: Start difference. First operand 144 states and 572 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) [2021-10-06 21:12:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:38,024 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-06 21:12:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:12:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:38,027 INFO L225 Difference]: With dead ends: 134 [2021-10-06 21:12:38,027 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 21:12:38,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 21:12:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-06 21:12:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-06 21:12:38,038 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-06 21:12:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:38,040 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-06 21:12:38,040 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) [2021-10-06 21:12:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-06 21:12:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:12:38,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:38,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:38,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:38,254 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 [2021-10-06 21:12:38,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:38,259 INFO L82 PathProgramCache]: Analyzing trace with hash 633695053, now seen corresponding path program 1 times [2021-10-06 21:12:38,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:38,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249221685] [2021-10-06 21:12:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:38,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:38,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:38,266 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) [2021-10-06 21:12:38,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:12:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:38,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:12:38,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:38,571 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:12:38,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:12:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:39,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:39,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:39,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249221685] [2021-10-06 21:12:39,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249221685] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:39,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:39,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:12:39,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637450785] [2021-10-06 21:12:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:12:39,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:12:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:12:39,170 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:39,201 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-06 21:12:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:12:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:39,204 INFO L225 Difference]: With dead ends: 124 [2021-10-06 21:12:39,204 INFO L226 Difference]: Without dead ends: 124 [2021-10-06 21:12:39,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:12:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-06 21:12:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-06 21:12:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-06 21:12:39,211 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-06 21:12:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:39,212 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-06 21:12:39,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-06 21:12:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:12:39,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:39,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:39,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 21:12:39,430 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 [2021-10-06 21:12:39,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash -904401289, now seen corresponding path program 1 times [2021-10-06 21:12:39,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:39,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884136381] [2021-10-06 21:12:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:39,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:39,434 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) [2021-10-06 21:12:39,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:12:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:39,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:12:39,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:39,746 INFO L354 Elim1Store]: treesize reduction 243, result has 15.0 percent of original size [2021-10-06 21:12:39,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 93 [2021-10-06 21:12:39,765 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:12:39,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 168 [2021-10-06 21:12:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:41,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:41,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:41,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884136381] [2021-10-06 21:12:41,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884136381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:41,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:41,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:41,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452901544] [2021-10-06 21:12:41,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:41,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:41,136 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:41,189 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-06 21:12:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:12:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:41,192 INFO L225 Difference]: With dead ends: 108 [2021-10-06 21:12:41,192 INFO L226 Difference]: Without dead ends: 108 [2021-10-06 21:12:41,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-06 21:12:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-06 21:12:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-06 21:12:41,200 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-06 21:12:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:41,201 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-06 21:12:41,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-06 21:12:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:12:41,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:41,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:41,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:41,403 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 [2021-10-06 21:12:41,404 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash -904401287, now seen corresponding path program 1 times [2021-10-06 21:12:41,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:41,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297754785] [2021-10-06 21:12:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:41,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:41,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:41,407 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) [2021-10-06 21:12:41,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:12:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:41,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:12:41,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:41,768 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:12:41,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:12:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:42,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:42,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:42,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297754785] [2021-10-06 21:12:42,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297754785] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:42,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:42,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:12:42,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148988232] [2021-10-06 21:12:42,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:42,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:12:42,281 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:42,328 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-06 21:12:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:12:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:42,330 INFO L225 Difference]: With dead ends: 92 [2021-10-06 21:12:42,330 INFO L226 Difference]: Without dead ends: 92 [2021-10-06 21:12:42,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:12:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-06 21:12:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-06 21:12:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-06 21:12:42,336 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-06 21:12:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:42,336 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-06 21:12:42,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-06 21:12:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:12:42,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:42,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:42,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:42,552 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 [2021-10-06 21:12:42,553 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:42,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1907472718, now seen corresponding path program 1 times [2021-10-06 21:12:42,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:42,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528787002] [2021-10-06 21:12:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:42,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:42,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:42,556 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) [2021-10-06 21:12:42,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:12:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:42,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:12:42,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:42,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:43,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:43,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528787002] [2021-10-06 21:12:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528787002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:43,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:12:43,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275000137] [2021-10-06 21:12:43,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:43,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:43,158 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:43,191 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-06 21:12:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:12:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:12:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:43,194 INFO L225 Difference]: With dead ends: 181 [2021-10-06 21:12:43,194 INFO L226 Difference]: Without dead ends: 172 [2021-10-06 21:12:43,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:12:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-06 21:12:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-06 21:12:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-06 21:12:43,207 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-06 21:12:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:43,208 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-06 21:12:43,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-06 21:12:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:43,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:43,221 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] [2021-10-06 21:12:43,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:43,434 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 [2021-10-06 21:12:43,434 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1828550335, now seen corresponding path program 1 times [2021-10-06 21:12:43,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:43,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644237687] [2021-10-06 21:12:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:43,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:43,438 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) [2021-10-06 21:12:43,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:12:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:43,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:43,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:43,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:43,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644237687] [2021-10-06 21:12:43,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644237687] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:43,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:43,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-06 21:12:43,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139219182] [2021-10-06 21:12:43,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:43,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:43,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:12:43,799 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:43,898 INFO L93 Difference]: Finished difference Result 250 states and 887 transitions. [2021-10-06 21:12:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:12:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:43,901 INFO L225 Difference]: With dead ends: 250 [2021-10-06 21:12:43,901 INFO L226 Difference]: Without dead ends: 244 [2021-10-06 21:12:43,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-06 21:12:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2021-10-06 21:12:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.736842105263158) internal successors, (781), 209 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 781 transitions. [2021-10-06 21:12:43,914 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 781 transitions. Word has length 22 [2021-10-06 21:12:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:43,915 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 781 transitions. [2021-10-06 21:12:43,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 781 transitions. [2021-10-06 21:12:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:43,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:43,917 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] [2021-10-06 21:12:43,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:44,129 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 [2021-10-06 21:12:44,130 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:44,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1281821870, now seen corresponding path program 1 times [2021-10-06 21:12:44,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:44,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503052695] [2021-10-06 21:12:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:44,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:44,135 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) [2021-10-06 21:12:44,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:12:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:44,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:44,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:44,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:44,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:44,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503052695] [2021-10-06 21:12:44,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503052695] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:44,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:44,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-06 21:12:44,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894693259] [2021-10-06 21:12:44,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:12:44,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:12:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:12:44,595 INFO L87 Difference]: Start difference. First operand 210 states and 781 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:44,706 INFO L93 Difference]: Finished difference Result 288 states and 1027 transitions. [2021-10-06 21:12:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:12:44,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:44,710 INFO L225 Difference]: With dead ends: 288 [2021-10-06 21:12:44,710 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 21:12:44,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 21:12:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2021-10-06 21:12:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.8354430379746836) internal successors, (909), 237 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 909 transitions. [2021-10-06 21:12:44,728 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 909 transitions. Word has length 22 [2021-10-06 21:12:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:44,729 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 909 transitions. [2021-10-06 21:12:44,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 909 transitions. [2021-10-06 21:12:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:44,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:44,731 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] [2021-10-06 21:12:44,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:44,946 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 [2021-10-06 21:12:44,947 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1746217065, now seen corresponding path program 1 times [2021-10-06 21:12:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:44,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348254368] [2021-10-06 21:12:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:44,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:44,951 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) [2021-10-06 21:12:44,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:12:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:45,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:45,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:45,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:45,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:45,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348254368] [2021-10-06 21:12:45,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348254368] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:45,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:45,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:12:45,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841460524] [2021-10-06 21:12:45,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:45,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:45,446 INFO L87 Difference]: Start difference. First operand 238 states and 909 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:45,766 INFO L93 Difference]: Finished difference Result 622 states and 2370 transitions. [2021-10-06 21:12:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:12:45,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:45,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:45,773 INFO L225 Difference]: With dead ends: 622 [2021-10-06 21:12:45,774 INFO L226 Difference]: Without dead ends: 622 [2021-10-06 21:12:45,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:12:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-06 21:12:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 364. [2021-10-06 21:12:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 4.292011019283747) internal successors, (1558), 363 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1558 transitions. [2021-10-06 21:12:45,798 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1558 transitions. Word has length 22 [2021-10-06 21:12:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:45,799 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1558 transitions. [2021-10-06 21:12:45,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1558 transitions. [2021-10-06 21:12:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:45,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:45,801 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] [2021-10-06 21:12:45,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-06 21:12:46,014 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 [2021-10-06 21:12:46,014 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:46,015 INFO L82 PathProgramCache]: Analyzing trace with hash 154908620, now seen corresponding path program 2 times [2021-10-06 21:12:46,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:46,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988174925] [2021-10-06 21:12:46,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:46,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:46,018 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) [2021-10-06 21:12:46,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:12:46,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:46,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:46,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:46,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:46,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:46,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988174925] [2021-10-06 21:12:46,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988174925] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:46,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:46,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:12:46,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591814179] [2021-10-06 21:12:46,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:46,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:46,556 INFO L87 Difference]: Start difference. First operand 364 states and 1558 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:46,943 INFO L93 Difference]: Finished difference Result 752 states and 3010 transitions. [2021-10-06 21:12:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:12:46,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:46,952 INFO L225 Difference]: With dead ends: 752 [2021-10-06 21:12:46,952 INFO L226 Difference]: Without dead ends: 752 [2021-10-06 21:12:46,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:12:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-06 21:12:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 474. [2021-10-06 21:12:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 4.509513742071881) internal successors, (2133), 473 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 2133 transitions. [2021-10-06 21:12:46,985 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 2133 transitions. Word has length 22 [2021-10-06 21:12:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:46,985 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 2133 transitions. [2021-10-06 21:12:46,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 2133 transitions. [2021-10-06 21:12:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:46,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:46,989 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] [2021-10-06 21:12:47,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:47,202 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 [2021-10-06 21:12:47,203 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:47,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash -120336181, now seen corresponding path program 2 times [2021-10-06 21:12:47,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:47,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554387515] [2021-10-06 21:12:47,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:47,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:47,206 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) [2021-10-06 21:12:47,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:12:47,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:47,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:47,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:47,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:47,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:47,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:47,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554387515] [2021-10-06 21:12:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554387515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:47,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:47,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:12:47,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483105943] [2021-10-06 21:12:47,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:47,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:47,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:47,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:47,681 INFO L87 Difference]: Start difference. First operand 474 states and 2133 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:47,985 INFO L93 Difference]: Finished difference Result 1548 states and 6700 transitions. [2021-10-06 21:12:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:12:47,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:48,003 INFO L225 Difference]: With dead ends: 1548 [2021-10-06 21:12:48,004 INFO L226 Difference]: Without dead ends: 1548 [2021-10-06 21:12:48,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:12:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-06 21:12:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 706. [2021-10-06 21:12:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 4.927659574468085) internal successors, (3474), 705 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 3474 transitions. [2021-10-06 21:12:48,057 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 3474 transitions. Word has length 22 [2021-10-06 21:12:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:48,057 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 3474 transitions. [2021-10-06 21:12:48,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 3474 transitions. [2021-10-06 21:12:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:12:48,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:48,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:48,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-06 21:12:48,274 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 [2021-10-06 21:12:48,274 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2032475112, now seen corresponding path program 1 times [2021-10-06 21:12:48,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:48,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562507615] [2021-10-06 21:12:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:48,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:48,278 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) [2021-10-06 21:12:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:12:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:48,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:12:48,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:48,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:48,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:48,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562507615] [2021-10-06 21:12:48,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562507615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:48,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:48,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:12:48,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740853986] [2021-10-06 21:12:48,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:48,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:48,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:48,682 INFO L87 Difference]: Start difference. First operand 706 states and 3474 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:48,998 INFO L93 Difference]: Finished difference Result 1926 states and 8712 transitions. [2021-10-06 21:12:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:12:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:12:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:49,035 INFO L225 Difference]: With dead ends: 1926 [2021-10-06 21:12:49,035 INFO L226 Difference]: Without dead ends: 1926 [2021-10-06 21:12:49,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:12:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-10-06 21:12:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 970. [2021-10-06 21:12:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 5.123839009287925) internal successors, (4965), 969 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 4965 transitions. [2021-10-06 21:12:49,103 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 4965 transitions. Word has length 22 [2021-10-06 21:12:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:49,103 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 4965 transitions. [2021-10-06 21:12:49,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 4965 transitions. [2021-10-06 21:12:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:12:49,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:49,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:49,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:49,324 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 [2021-10-06 21:12:49,324 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:49,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1417911849, now seen corresponding path program 1 times [2021-10-06 21:12:49,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:49,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917380010] [2021-10-06 21:12:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:49,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:49,327 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) [2021-10-06 21:12:49,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:12:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:49,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:12:49,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:49,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:50,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:50,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917380010] [2021-10-06 21:12:50,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917380010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:50,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:50,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:12:50,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611770471] [2021-10-06 21:12:50,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:50,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:50,260 INFO L87 Difference]: Start difference. First operand 970 states and 4965 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:50,644 INFO L93 Difference]: Finished difference Result 1200 states and 5728 transitions. [2021-10-06 21:12:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:50,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:12:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:50,660 INFO L225 Difference]: With dead ends: 1200 [2021-10-06 21:12:50,660 INFO L226 Difference]: Without dead ends: 1170 [2021-10-06 21:12:50,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-10-06 21:12:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1062. [2021-10-06 21:12:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1061 states have (on average 5.04995287464656) internal successors, (5358), 1061 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 5358 transitions. [2021-10-06 21:12:50,712 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 5358 transitions. Word has length 23 [2021-10-06 21:12:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:50,713 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 5358 transitions. [2021-10-06 21:12:50,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 5358 transitions. [2021-10-06 21:12:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:12:50,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:50,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:50,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:50,932 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 [2021-10-06 21:12:50,933 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1189546497, now seen corresponding path program 2 times [2021-10-06 21:12:50,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:50,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6472313] [2021-10-06 21:12:50,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:50,935 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:50,936 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:50,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:12:51,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:51,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:51,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:12:51,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:51,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:51,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:51,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6472313] [2021-10-06 21:12:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6472313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:51,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:51,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:12:51,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674826742] [2021-10-06 21:12:51,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:51,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:51,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:51,827 INFO L87 Difference]: Start difference. First operand 1062 states and 5358 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:52,098 INFO L93 Difference]: Finished difference Result 1280 states and 6092 transitions. [2021-10-06 21:12:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:12:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:52,113 INFO L225 Difference]: With dead ends: 1280 [2021-10-06 21:12:52,114 INFO L226 Difference]: Without dead ends: 1250 [2021-10-06 21:12:52,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-06 21:12:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1136. [2021-10-06 21:12:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 5.0123348017621145) internal successors, (5689), 1135 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 5689 transitions. [2021-10-06 21:12:52,170 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 5689 transitions. Word has length 23 [2021-10-06 21:12:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:52,171 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 5689 transitions. [2021-10-06 21:12:52,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 5689 transitions. [2021-10-06 21:12:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:12:52,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:52,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:52,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:52,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:52,392 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:52,393 INFO L82 PathProgramCache]: Analyzing trace with hash -33754597, now seen corresponding path program 1 times [2021-10-06 21:12:52,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:52,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907263451] [2021-10-06 21:12:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:52,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:52,395 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:52,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:12:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:52,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:12:52,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:53,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:53,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:53,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907263451] [2021-10-06 21:12:53,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907263451] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:53,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:53,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:12:53,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662866441] [2021-10-06 21:12:53,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:53,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:53,691 INFO L87 Difference]: Start difference. First operand 1136 states and 5689 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:53,934 INFO L93 Difference]: Finished difference Result 1414 states and 6615 transitions. [2021-10-06 21:12:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:53,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:12:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:53,949 INFO L225 Difference]: With dead ends: 1414 [2021-10-06 21:12:53,950 INFO L226 Difference]: Without dead ends: 1364 [2021-10-06 21:12:53,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 437.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-10-06 21:12:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1224. [2021-10-06 21:12:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1223 states have (on average 4.964840556009812) internal successors, (6072), 1223 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 6072 transitions. [2021-10-06 21:12:54,006 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 6072 transitions. Word has length 23 [2021-10-06 21:12:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:54,008 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 6072 transitions. [2021-10-06 21:12:54,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 6072 transitions. [2021-10-06 21:12:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:12:54,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:54,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:54,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:54,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:54,228 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -987708355, now seen corresponding path program 2 times [2021-10-06 21:12:54,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:54,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313966426] [2021-10-06 21:12:54,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:54,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:54,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:54,232 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:54,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:12:54,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:54,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:12:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:55,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:55,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:55,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313966426] [2021-10-06 21:12:55,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313966426] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:55,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:55,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:12:55,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497553632] [2021-10-06 21:12:55,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:12:55,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:12:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:55,247 INFO L87 Difference]: Start difference. First operand 1224 states and 6072 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:55,484 INFO L93 Difference]: Finished difference Result 1518 states and 7051 transitions. [2021-10-06 21:12:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:12:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:55,501 INFO L225 Difference]: With dead ends: 1518 [2021-10-06 21:12:55,501 INFO L226 Difference]: Without dead ends: 1468 [2021-10-06 21:12:55,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:12:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-10-06 21:12:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1304. [2021-10-06 21:12:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 4.927858787413661) internal successors, (6421), 1303 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 6421 transitions. [2021-10-06 21:12:55,559 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 6421 transitions. Word has length 23 [2021-10-06 21:12:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:55,560 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 6421 transitions. [2021-10-06 21:12:55,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 6421 transitions. [2021-10-06 21:12:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:55,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:55,567 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:55,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-06 21:12:55,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:55,783 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash -721660375, now seen corresponding path program 3 times [2021-10-06 21:12:55,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:55,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924945512] [2021-10-06 21:12:55,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:55,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:55,787 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:55,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:12:56,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:12:56,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:56,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:56,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:56,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:56,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924945512] [2021-10-06 21:12:56,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924945512] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:56,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:56,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:56,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556095340] [2021-10-06 21:12:56,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:56,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:56,707 INFO L87 Difference]: Start difference. First operand 1304 states and 6421 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:57,820 INFO L93 Difference]: Finished difference Result 2356 states and 10599 transitions. [2021-10-06 21:12:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:12:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:12:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:57,836 INFO L225 Difference]: With dead ends: 2356 [2021-10-06 21:12:57,836 INFO L226 Difference]: Without dead ends: 2322 [2021-10-06 21:12:57,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 686.6ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:12:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-10-06 21:12:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1762. [2021-10-06 21:12:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1761 states have (on average 4.887563884156729) internal successors, (8607), 1761 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 8607 transitions. [2021-10-06 21:12:57,923 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 8607 transitions. Word has length 24 [2021-10-06 21:12:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:57,923 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 8607 transitions. [2021-10-06 21:12:57,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 8607 transitions. [2021-10-06 21:12:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:57,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:57,933 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:57,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-06 21:12:58,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:58,146 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:12:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash 50634875, now seen corresponding path program 4 times [2021-10-06 21:12:58,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:58,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471493988] [2021-10-06 21:12:58,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:12:58,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:58,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:58,150 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:58,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:12:58,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:12:58,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:58,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:58,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:58,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:59,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:59,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471493988] [2021-10-06 21:12:59,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471493988] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:59,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:59,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:59,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87436313] [2021-10-06 21:12:59,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:59,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:59,095 INFO L87 Difference]: Start difference. First operand 1762 states and 8607 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:00,637 INFO L93 Difference]: Finished difference Result 2792 states and 12818 transitions. [2021-10-06 21:13:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:13:00,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:13:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:00,657 INFO L225 Difference]: With dead ends: 2792 [2021-10-06 21:13:00,657 INFO L226 Difference]: Without dead ends: 2766 [2021-10-06 21:13:00,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 847.8ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-10-06 21:13:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1924. [2021-10-06 21:13:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 4.965158606344254) internal successors, (9548), 1923 states have internal predecessors, (9548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 9548 transitions. [2021-10-06 21:13:00,759 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 9548 transitions. Word has length 24 [2021-10-06 21:13:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:00,759 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 9548 transitions. [2021-10-06 21:13:00,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 9548 transitions. [2021-10-06 21:13:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:00,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:00,768 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:00,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:00,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:00,982 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:00,983 INFO L82 PathProgramCache]: Analyzing trace with hash -701139301, now seen corresponding path program 5 times [2021-10-06 21:13:00,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:00,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742392272] [2021-10-06 21:13:00,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:00,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:00,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:00,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:01,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:13:01,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:13:01,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:01,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:01,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:01,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:01,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:01,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742392272] [2021-10-06 21:13:01,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742392272] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:01,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808069141] [2021-10-06 21:13:01,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:01,998 INFO L87 Difference]: Start difference. First operand 1924 states and 9548 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:03,657 INFO L93 Difference]: Finished difference Result 3734 states and 17351 transitions. [2021-10-06 21:13:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:13:03,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:13:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:03,682 INFO L225 Difference]: With dead ends: 3734 [2021-10-06 21:13:03,682 INFO L226 Difference]: Without dead ends: 3734 [2021-10-06 21:13:03,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 925.2ms TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:13:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2021-10-06 21:13:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 2178. [2021-10-06 21:13:03,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 5.160312356453836) internal successors, (11234), 2177 states have internal predecessors, (11234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 11234 transitions. [2021-10-06 21:13:03,851 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 11234 transitions. Word has length 24 [2021-10-06 21:13:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:03,851 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 11234 transitions. [2021-10-06 21:13:03,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 11234 transitions. [2021-10-06 21:13:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:03,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:03,861 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:03,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-06 21:13:04,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:04,076 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash 264671209, now seen corresponding path program 6 times [2021-10-06 21:13:04,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:04,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425212274] [2021-10-06 21:13:04,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:04,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:04,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:04,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:13:04,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:13:04,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:04,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:04,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:05,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:05,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425212274] [2021-10-06 21:13:05,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425212274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:05,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:05,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:05,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441017796] [2021-10-06 21:13:05,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:05,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:05,110 INFO L87 Difference]: Start difference. First operand 2178 states and 11234 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:06,317 INFO L93 Difference]: Finished difference Result 3778 states and 18202 transitions. [2021-10-06 21:13:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:13:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:13:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:06,340 INFO L225 Difference]: With dead ends: 3778 [2021-10-06 21:13:06,340 INFO L226 Difference]: Without dead ends: 3778 [2021-10-06 21:13:06,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 647.2ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-10-06 21:13:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2518. [2021-10-06 21:13:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 5.297973778307509) internal successors, (13335), 2517 states have internal predecessors, (13335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 13335 transitions. [2021-10-06 21:13:06,483 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 13335 transitions. Word has length 24 [2021-10-06 21:13:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:06,484 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 13335 transitions. [2021-10-06 21:13:06,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 13335 transitions. [2021-10-06 21:13:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:06,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:06,495 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:06,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:06,708 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash 856151015, now seen corresponding path program 7 times [2021-10-06 21:13:06,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:06,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355935264] [2021-10-06 21:13:06,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:13:06,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:06,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:06,712 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:06,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:13:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:07,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:07,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:07,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:07,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:07,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355935264] [2021-10-06 21:13:07,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355935264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:07,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:07,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:07,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540088353] [2021-10-06 21:13:07,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:07,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:07,716 INFO L87 Difference]: Start difference. First operand 2518 states and 13335 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:08,903 INFO L93 Difference]: Finished difference Result 3490 states and 17427 transitions. [2021-10-06 21:13:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:13:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:13:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:08,954 INFO L225 Difference]: With dead ends: 3490 [2021-10-06 21:13:08,954 INFO L226 Difference]: Without dead ends: 3452 [2021-10-06 21:13:08,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 610.9ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2021-10-06 21:13:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 2696. [2021-10-06 21:13:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2695 states have (on average 5.337662337662338) internal successors, (14385), 2695 states have internal predecessors, (14385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 14385 transitions. [2021-10-06 21:13:09,083 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 14385 transitions. Word has length 24 [2021-10-06 21:13:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:09,083 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 14385 transitions. [2021-10-06 21:13:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 14385 transitions. [2021-10-06 21:13:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:09,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:09,096 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:09,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-06 21:13:09,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:09,309 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 693352903, now seen corresponding path program 8 times [2021-10-06 21:13:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:09,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373128285] [2021-10-06 21:13:09,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:13:09,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:09,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:09,313 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:09,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:13:09,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:13:09,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:09,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:10,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:10,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373128285] [2021-10-06 21:13:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373128285] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:10,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:10,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:10,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872562803] [2021-10-06 21:13:10,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:10,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:10,448 INFO L87 Difference]: Start difference. First operand 2696 states and 14385 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:12,187 INFO L93 Difference]: Finished difference Result 4238 states and 20581 transitions. [2021-10-06 21:13:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:13:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-06 21:13:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:12,203 INFO L225 Difference]: With dead ends: 4238 [2021-10-06 21:13:12,203 INFO L226 Difference]: Without dead ends: 4238 [2021-10-06 21:13:12,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1008.9ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:13:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-10-06 21:13:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 2772. [2021-10-06 21:13:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2771 states have (on average 5.344640923854204) internal successors, (14810), 2771 states have internal predecessors, (14810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 14810 transitions. [2021-10-06 21:13:12,382 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 14810 transitions. Word has length 24 [2021-10-06 21:13:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:12,382 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 14810 transitions. [2021-10-06 21:13:12,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 14810 transitions. [2021-10-06 21:13:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:12,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:12,394 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:12,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:12,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:12,608 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 478182818, now seen corresponding path program 3 times [2021-10-06 21:13:12,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:12,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136128455] [2021-10-06 21:13:12,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:12,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:12,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:12,611 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:12,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:13:12,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:13:12,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:12,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:12,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:13,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:13,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136128455] [2021-10-06 21:13:13,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136128455] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:13,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:13,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:13:13,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795901686] [2021-10-06 21:13:13,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:13,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:13,517 INFO L87 Difference]: Start difference. First operand 2772 states and 14810 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:15,160 INFO L93 Difference]: Finished difference Result 7216 states and 34863 transitions. [2021-10-06 21:13:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:13:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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 24 [2021-10-06 21:13:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:15,185 INFO L225 Difference]: With dead ends: 7216 [2021-10-06 21:13:15,185 INFO L226 Difference]: Without dead ends: 7216 [2021-10-06 21:13:15,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 935.7ms TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:13:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-10-06 21:13:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 3668. [2021-10-06 21:13:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 5.4856831197163896) internal successors, (20116), 3667 states have internal predecessors, (20116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 20116 transitions. [2021-10-06 21:13:15,423 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 20116 transitions. Word has length 24 [2021-10-06 21:13:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:15,425 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 20116 transitions. [2021-10-06 21:13:15,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 20116 transitions. [2021-10-06 21:13:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:15,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:15,441 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:15,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:15,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:15,657 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1644692789, now seen corresponding path program 4 times [2021-10-06 21:13:15,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:15,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903045869] [2021-10-06 21:13:15,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:15,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:15,661 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:15,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:13:16,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:16,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:16,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:16,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:16,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:16,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:16,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903045869] [2021-10-06 21:13:16,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903045869] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:16,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:16,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:16,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985334283] [2021-10-06 21:13:16,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:16,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:16,583 INFO L87 Difference]: Start difference. First operand 3668 states and 20116 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:17,930 INFO L93 Difference]: Finished difference Result 6886 states and 33570 transitions. [2021-10-06 21:13:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:13:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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 24 [2021-10-06 21:13:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:17,956 INFO L225 Difference]: With dead ends: 6886 [2021-10-06 21:13:17,956 INFO L226 Difference]: Without dead ends: 6870 [2021-10-06 21:13:17,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 762.2ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2021-10-06 21:13:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 4158. [2021-10-06 21:13:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 4157 states have (on average 5.3762328602357465) internal successors, (22349), 4157 states have internal predecessors, (22349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 22349 transitions. [2021-10-06 21:13:18,185 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 22349 transitions. Word has length 24 [2021-10-06 21:13:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:18,186 INFO L470 AbstractCegarLoop]: Abstraction has 4158 states and 22349 transitions. [2021-10-06 21:13:18,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 22349 transitions. [2021-10-06 21:13:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:18,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:18,204 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:18,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:18,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:18,419 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:18,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1064062474, now seen corresponding path program 5 times [2021-10-06 21:13:18,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:18,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409033543] [2021-10-06 21:13:18,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:18,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:18,422 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:18,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:13:18,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:13:18,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:18,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:18,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:18,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:19,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:19,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409033543] [2021-10-06 21:13:19,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409033543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:19,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:19,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:19,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794464566] [2021-10-06 21:13:19,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:19,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:19,273 INFO L87 Difference]: Start difference. First operand 4158 states and 22349 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:20,975 INFO L93 Difference]: Finished difference Result 12458 states and 59921 transitions. [2021-10-06 21:13:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:13:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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 24 [2021-10-06 21:13:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:21,099 INFO L225 Difference]: With dead ends: 12458 [2021-10-06 21:13:21,099 INFO L226 Difference]: Without dead ends: 12458 [2021-10-06 21:13:21,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 908.1ms TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12458 states. [2021-10-06 21:13:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12458 to 4770. [2021-10-06 21:13:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 5.512266722583351) internal successors, (26288), 4769 states have internal predecessors, (26288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 26288 transitions. [2021-10-06 21:13:21,677 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 26288 transitions. Word has length 24 [2021-10-06 21:13:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:21,678 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 26288 transitions. [2021-10-06 21:13:21,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 26288 transitions. [2021-10-06 21:13:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:21,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:21,703 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:21,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:21,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:21,918 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:21,919 INFO L82 PathProgramCache]: Analyzing trace with hash 841222523, now seen corresponding path program 6 times [2021-10-06 21:13:21,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:21,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277929107] [2021-10-06 21:13:21,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:21,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:21,922 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:21,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:13:22,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:13:22,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:22,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:22,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:22,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:22,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277929107] [2021-10-06 21:13:22,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277929107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:22,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:22,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:22,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497544357] [2021-10-06 21:13:22,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:22,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:22,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:22,889 INFO L87 Difference]: Start difference. First operand 4770 states and 26288 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:24,515 INFO L93 Difference]: Finished difference Result 7226 states and 36758 transitions. [2021-10-06 21:13:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:13:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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 24 [2021-10-06 21:13:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:24,541 INFO L225 Difference]: With dead ends: 7226 [2021-10-06 21:13:24,541 INFO L226 Difference]: Without dead ends: 7204 [2021-10-06 21:13:24,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 763.0ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2021-10-06 21:13:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 4718. [2021-10-06 21:13:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4718 states, 4717 states have (on average 5.451558193767225) internal successors, (25715), 4717 states have internal predecessors, (25715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4718 states to 4718 states and 25715 transitions. [2021-10-06 21:13:24,693 INFO L78 Accepts]: Start accepts. Automaton has 4718 states and 25715 transitions. Word has length 24 [2021-10-06 21:13:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:24,693 INFO L470 AbstractCegarLoop]: Abstraction has 4718 states and 25715 transitions. [2021-10-06 21:13:24,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4718 states and 25715 transitions. [2021-10-06 21:13:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:24,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:24,744 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:24,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:24,945 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:24,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1825485618, now seen corresponding path program 7 times [2021-10-06 21:13:24,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:24,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282755034] [2021-10-06 21:13:24,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:13:24,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:24,948 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:24,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:13:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:25,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:25,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:25,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282755034] [2021-10-06 21:13:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282755034] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:25,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:25,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:13:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301361442] [2021-10-06 21:13:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:25,920 INFO L87 Difference]: Start difference. First operand 4718 states and 25715 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:29,498 INFO L93 Difference]: Finished difference Result 13788 states and 67460 transitions. [2021-10-06 21:13:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:13:29,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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 24 [2021-10-06 21:13:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:29,558 INFO L225 Difference]: With dead ends: 13788 [2021-10-06 21:13:29,558 INFO L226 Difference]: Without dead ends: 13788 [2021-10-06 21:13:29,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 729.7ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13788 states. [2021-10-06 21:13:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13788 to 5752. [2021-10-06 21:13:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 5751 states have (on average 5.687532603025561) internal successors, (32709), 5751 states have internal predecessors, (32709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 32709 transitions. [2021-10-06 21:13:29,902 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 32709 transitions. Word has length 24 [2021-10-06 21:13:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:29,903 INFO L470 AbstractCegarLoop]: Abstraction has 5752 states and 32709 transitions. [2021-10-06 21:13:29,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 32709 transitions. [2021-10-06 21:13:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:29,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:29,920 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:29,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:30,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:30,126 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1152488215, now seen corresponding path program 8 times [2021-10-06 21:13:30,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:30,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115232343] [2021-10-06 21:13:30,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:13:30,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:30,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:30,130 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:30,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:13:30,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:13:30,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:30,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:30,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:30,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:31,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:31,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115232343] [2021-10-06 21:13:31,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115232343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:31,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:31,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:13:31,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005306293] [2021-10-06 21:13:31,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:31,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:31,080 INFO L87 Difference]: Start difference. First operand 5752 states and 32709 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:32,378 INFO L93 Difference]: Finished difference Result 8632 states and 45881 transitions. [2021-10-06 21:13:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:13:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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 24 [2021-10-06 21:13:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:32,425 INFO L225 Difference]: With dead ends: 8632 [2021-10-06 21:13:32,426 INFO L226 Difference]: Without dead ends: 8596 [2021-10-06 21:13:32,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 617.0ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2021-10-06 21:13:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 6298. [2021-10-06 21:13:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6298 states, 6297 states have (on average 5.71811973955852) internal successors, (36007), 6297 states have internal predecessors, (36007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 36007 transitions. [2021-10-06 21:13:32,866 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 36007 transitions. Word has length 24 [2021-10-06 21:13:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:32,866 INFO L470 AbstractCegarLoop]: Abstraction has 6298 states and 36007 transitions. [2021-10-06 21:13:32,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 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) [2021-10-06 21:13:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 36007 transitions. [2021-10-06 21:13:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:32,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:32,898 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:32,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:33,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:33,109 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1767576425, now seen corresponding path program 9 times [2021-10-06 21:13:33,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:33,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831394991] [2021-10-06 21:13:33,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:33,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:33,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:33,113 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:33,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:13:33,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:13:33,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:33,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:33,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:33,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:34,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:34,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831394991] [2021-10-06 21:13:34,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831394991] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:34,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:34,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:13:34,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410019975] [2021-10-06 21:13:34,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:34,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:34,140 INFO L87 Difference]: Start difference. First operand 6298 states and 36007 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:35,814 INFO L93 Difference]: Finished difference Result 11352 states and 58176 transitions. [2021-10-06 21:13:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:13:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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 24 [2021-10-06 21:13:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:35,866 INFO L225 Difference]: With dead ends: 11352 [2021-10-06 21:13:35,866 INFO L226 Difference]: Without dead ends: 11352 [2021-10-06 21:13:35,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 955.8ms TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:13:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11352 states. [2021-10-06 21:13:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11352 to 7142. [2021-10-06 21:13:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 7141 states have (on average 5.693740372496849) internal successors, (40659), 7141 states have internal predecessors, (40659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 40659 transitions. [2021-10-06 21:13:36,274 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 40659 transitions. Word has length 24 [2021-10-06 21:13:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:36,274 INFO L470 AbstractCegarLoop]: Abstraction has 7142 states and 40659 transitions. [2021-10-06 21:13:36,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 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) [2021-10-06 21:13:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 40659 transitions. [2021-10-06 21:13:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:13:36,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:36,372 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:36,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:36,573 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1368866086, now seen corresponding path program 9 times [2021-10-06 21:13:36,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:36,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690940555] [2021-10-06 21:13:36,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:36,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:36,577 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:36,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:13:37,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:13:37,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:37,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:37,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:37,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:37,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690940555] [2021-10-06 21:13:37,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690940555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:37,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:37,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:13:37,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864547749] [2021-10-06 21:13:37,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:37,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:37,852 INFO L87 Difference]: Start difference. First operand 7142 states and 40659 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:42,514 INFO L93 Difference]: Finished difference Result 7570 states and 42103 transitions. [2021-10-06 21:13:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:13:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:13:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:42,557 INFO L225 Difference]: With dead ends: 7570 [2021-10-06 21:13:42,557 INFO L226 Difference]: Without dead ends: 7540 [2021-10-06 21:13:42,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 258.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7540 states. [2021-10-06 21:13:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7540 to 7226. [2021-10-06 21:13:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7226 states, 7225 states have (on average 5.680968858131488) internal successors, (41045), 7225 states have internal predecessors, (41045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7226 states to 7226 states and 41045 transitions. [2021-10-06 21:13:42,916 INFO L78 Accepts]: Start accepts. Automaton has 7226 states and 41045 transitions. Word has length 25 [2021-10-06 21:13:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:42,916 INFO L470 AbstractCegarLoop]: Abstraction has 7226 states and 41045 transitions. [2021-10-06 21:13:42,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7226 states and 41045 transitions. [2021-10-06 21:13:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:13:42,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:42,958 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:42,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:43,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,174 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1462486909, now seen corresponding path program 10 times [2021-10-06 21:13:43,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:43,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729219019] [2021-10-06 21:13:43,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:43,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:43,177 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:43,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:13:43,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:43,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:43,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:43,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729219019] [2021-10-06 21:13:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729219019] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:44,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:13:44,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556975225] [2021-10-06 21:13:44,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:13:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:13:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:13:44,880 INFO L87 Difference]: Start difference. First operand 7226 states and 41045 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:50,094 INFO L93 Difference]: Finished difference Result 12710 states and 66622 transitions. [2021-10-06 21:13:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:13:50,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:13:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:50,171 INFO L225 Difference]: With dead ends: 12710 [2021-10-06 21:13:50,171 INFO L226 Difference]: Without dead ends: 12710 [2021-10-06 21:13:50,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1707.6ms TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:13:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12710 states. [2021-10-06 21:13:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12710 to 8098. [2021-10-06 21:13:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 8097 states have (on average 5.780906508583426) internal successors, (46808), 8097 states have internal predecessors, (46808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 46808 transitions. [2021-10-06 21:13:50,601 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 46808 transitions. Word has length 25 [2021-10-06 21:13:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:50,601 INFO L470 AbstractCegarLoop]: Abstraction has 8098 states and 46808 transitions. [2021-10-06 21:13:50,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 46808 transitions. [2021-10-06 21:13:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:13:50,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:50,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:50,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:50,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:50,825 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash -382534502, now seen corresponding path program 11 times [2021-10-06 21:13:50,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:50,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172083373] [2021-10-06 21:13:50,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:50,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:50,829 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:50,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:13:51,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:13:51,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:51,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:51,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:51,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:52,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:52,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172083373] [2021-10-06 21:13:52,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172083373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:52,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:52,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:13:52,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457296439] [2021-10-06 21:13:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:52,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:52,310 INFO L87 Difference]: Start difference. First operand 8098 states and 46808 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:53,778 INFO L93 Difference]: Finished difference Result 8708 states and 48956 transitions. [2021-10-06 21:13:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:13:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:13:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:53,812 INFO L225 Difference]: With dead ends: 8708 [2021-10-06 21:13:53,812 INFO L226 Difference]: Without dead ends: 8678 [2021-10-06 21:13:53,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 292.4ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2021-10-06 21:13:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 8240. [2021-10-06 21:13:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 5.772545211797548) internal successors, (47560), 8239 states have internal predecessors, (47560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 47560 transitions. [2021-10-06 21:13:54,062 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 47560 transitions. Word has length 25 [2021-10-06 21:13:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:54,062 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 47560 transitions. [2021-10-06 21:13:54,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 47560 transitions. [2021-10-06 21:13:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:13:54,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:54,085 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:54,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:54,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:54,300 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:13:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1660934129, now seen corresponding path program 12 times [2021-10-06 21:13:54,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:54,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450436866] [2021-10-06 21:13:54,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:54,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:54,304 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:54,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:13:54,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:13:54,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:54,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:13:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:55,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:55,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:55,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450436866] [2021-10-06 21:13:55,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450436866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:55,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:55,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:13:55,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235951681] [2021-10-06 21:13:55,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:13:55,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:13:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:13:55,860 INFO L87 Difference]: Start difference. First operand 8240 states and 47560 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:59,945 INFO L93 Difference]: Finished difference Result 14430 states and 77037 transitions. [2021-10-06 21:13:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:13:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:13:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:00,013 INFO L225 Difference]: With dead ends: 14430 [2021-10-06 21:14:00,013 INFO L226 Difference]: Without dead ends: 14430 [2021-10-06 21:14:00,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1861.2ms TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:14:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14430 states. [2021-10-06 21:14:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14430 to 9320. [2021-10-06 21:14:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9320 states, 9319 states have (on average 5.8639338984869624) internal successors, (54646), 9319 states have internal predecessors, (54646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 54646 transitions. [2021-10-06 21:14:00,396 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 54646 transitions. Word has length 25 [2021-10-06 21:14:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:00,397 INFO L470 AbstractCegarLoop]: Abstraction has 9320 states and 54646 transitions. [2021-10-06 21:14:00,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 54646 transitions. [2021-10-06 21:14:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:00,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:00,425 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:00,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:00,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:00,633 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:00,634 INFO L82 PathProgramCache]: Analyzing trace with hash 378618516, now seen corresponding path program 13 times [2021-10-06 21:14:00,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:00,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458316203] [2021-10-06 21:14:00,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:14:00,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:00,637 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:00,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:14:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:01,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:01,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:01,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:01,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:01,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458316203] [2021-10-06 21:14:01,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458316203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:01,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:01,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:01,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752590320] [2021-10-06 21:14:01,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:01,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:01,963 INFO L87 Difference]: Start difference. First operand 9320 states and 54646 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:07,625 INFO L93 Difference]: Finished difference Result 9874 states and 56701 transitions. [2021-10-06 21:14:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:14:07,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:07,663 INFO L225 Difference]: With dead ends: 9874 [2021-10-06 21:14:07,663 INFO L226 Difference]: Without dead ends: 9844 [2021-10-06 21:14:07,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9844 states. [2021-10-06 21:14:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9844 to 9556. [2021-10-06 21:14:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9555 states have (on average 5.840083725798012) internal successors, (55802), 9555 states have internal predecessors, (55802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 55802 transitions. [2021-10-06 21:14:08,047 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 55802 transitions. Word has length 25 [2021-10-06 21:14:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:08,047 INFO L470 AbstractCegarLoop]: Abstraction has 9556 states and 55802 transitions. [2021-10-06 21:14:08,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 55802 transitions. [2021-10-06 21:14:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:08,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:08,073 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:08,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:08,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:08,274 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:08,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1801120847, now seen corresponding path program 14 times [2021-10-06 21:14:08,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:08,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802505247] [2021-10-06 21:14:08,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:14:08,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:08,278 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:08,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:14:08,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:14:08,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:08,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:14:08,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:09,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:09,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:09,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802505247] [2021-10-06 21:14:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802505247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:09,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:09,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:14:09,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112713787] [2021-10-06 21:14:09,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:14:09,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:14:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:14:09,909 INFO L87 Difference]: Start difference. First operand 9556 states and 55802 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:12,610 INFO L93 Difference]: Finished difference Result 14636 states and 79592 transitions. [2021-10-06 21:14:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:14:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:12,671 INFO L225 Difference]: With dead ends: 14636 [2021-10-06 21:14:12,671 INFO L226 Difference]: Without dead ends: 14636 [2021-10-06 21:14:12,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1487.4ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:14:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14636 states. [2021-10-06 21:14:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14636 to 9506. [2021-10-06 21:14:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 9505 states have (on average 5.809153077327722) internal successors, (55216), 9505 states have internal predecessors, (55216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 55216 transitions. [2021-10-06 21:14:13,188 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 55216 transitions. Word has length 25 [2021-10-06 21:14:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:13,189 INFO L470 AbstractCegarLoop]: Abstraction has 9506 states and 55216 transitions. [2021-10-06 21:14:13,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 55216 transitions. [2021-10-06 21:14:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:13,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:13,224 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:13,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-06 21:14:13,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:13,425 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1234108876, now seen corresponding path program 15 times [2021-10-06 21:14:13,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:13,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490799381] [2021-10-06 21:14:13,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:14:13,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:13,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:13,429 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:13,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:14:13,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:14:13,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:14,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:14,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:14,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:14,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490799381] [2021-10-06 21:14:14,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490799381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:14,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:14,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:14,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432520035] [2021-10-06 21:14:14,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:14,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:14,904 INFO L87 Difference]: Start difference. First operand 9506 states and 55216 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:16,378 INFO L93 Difference]: Finished difference Result 9886 states and 56329 transitions. [2021-10-06 21:14:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:14:16,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:16,418 INFO L225 Difference]: With dead ends: 9886 [2021-10-06 21:14:16,418 INFO L226 Difference]: Without dead ends: 9856 [2021-10-06 21:14:16,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 271.8ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9856 states. [2021-10-06 21:14:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 9492. [2021-10-06 21:14:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 9491 states have (on average 5.8092930144347275) internal successors, (55136), 9491 states have internal predecessors, (55136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 55136 transitions. [2021-10-06 21:14:16,915 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 55136 transitions. Word has length 25 [2021-10-06 21:14:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:16,916 INFO L470 AbstractCegarLoop]: Abstraction has 9492 states and 55136 transitions. [2021-10-06 21:14:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 55136 transitions. [2021-10-06 21:14:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:16,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:16,945 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:16,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:14:17,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:17,160 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1340465188, now seen corresponding path program 10 times [2021-10-06 21:14:17,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:17,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552535507] [2021-10-06 21:14:17,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:14:17,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:17,164 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:17,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:14:17,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:14:17,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:18,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:18,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:18,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552535507] [2021-10-06 21:14:18,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552535507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:18,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:18,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:18,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004013363] [2021-10-06 21:14:18,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:18,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:18,653 INFO L87 Difference]: Start difference. First operand 9492 states and 55136 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:19,859 INFO L93 Difference]: Finished difference Result 10034 states and 56980 transitions. [2021-10-06 21:14:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:14:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:19,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:19,901 INFO L225 Difference]: With dead ends: 10034 [2021-10-06 21:14:19,902 INFO L226 Difference]: Without dead ends: 9984 [2021-10-06 21:14:19,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 261.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2021-10-06 21:14:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9564. [2021-10-06 21:14:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9564 states, 9563 states have (on average 5.799539893338911) internal successors, (55461), 9563 states have internal predecessors, (55461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 55461 transitions. [2021-10-06 21:14:20,358 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 55461 transitions. Word has length 25 [2021-10-06 21:14:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:20,358 INFO L470 AbstractCegarLoop]: Abstraction has 9564 states and 55461 transitions. [2021-10-06 21:14:20,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 55461 transitions. [2021-10-06 21:14:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:20,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:20,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:20,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:20,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:20,591 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -366094592, now seen corresponding path program 1 times [2021-10-06 21:14:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:20,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392906674] [2021-10-06 21:14:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:20,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:20,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:20,595 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:20,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:14:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:21,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:21,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:22,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:22,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:22,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392906674] [2021-10-06 21:14:22,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392906674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:22,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:22,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:22,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259287769] [2021-10-06 21:14:22,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:22,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:22,494 INFO L87 Difference]: Start difference. First operand 9564 states and 55461 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:25,214 INFO L93 Difference]: Finished difference Result 10948 states and 61433 transitions. [2021-10-06 21:14:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:14:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:25,260 INFO L225 Difference]: With dead ends: 10948 [2021-10-06 21:14:25,260 INFO L226 Difference]: Without dead ends: 10848 [2021-10-06 21:14:25,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 423.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10848 states. [2021-10-06 21:14:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10848 to 10066. [2021-10-06 21:14:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 10065 states have (on average 5.7992051664182815) internal successors, (58369), 10065 states have internal predecessors, (58369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 58369 transitions. [2021-10-06 21:14:25,712 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 58369 transitions. Word has length 25 [2021-10-06 21:14:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:25,713 INFO L470 AbstractCegarLoop]: Abstraction has 10066 states and 58369 transitions. [2021-10-06 21:14:25,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 58369 transitions. [2021-10-06 21:14:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:25,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:25,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:25,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-06 21:14:25,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:25,941 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2053603542, now seen corresponding path program 2 times [2021-10-06 21:14:25,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:25,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743725531] [2021-10-06 21:14:25,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:14:25,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:25,945 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:25,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:14:26,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:14:26,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:26,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:27,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:27,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743725531] [2021-10-06 21:14:27,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743725531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:27,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:27,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:27,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865719249] [2021-10-06 21:14:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:27,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:27,726 INFO L87 Difference]: Start difference. First operand 10066 states and 58369 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:28,391 INFO L93 Difference]: Finished difference Result 11510 states and 64915 transitions. [2021-10-06 21:14:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:14:28,391 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:28,440 INFO L225 Difference]: With dead ends: 11510 [2021-10-06 21:14:28,440 INFO L226 Difference]: Without dead ends: 11422 [2021-10-06 21:14:28,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 336.6ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2021-10-06 21:14:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 10534. [2021-10-06 21:14:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 5.823127314155511) internal successors, (61335), 10533 states have internal predecessors, (61335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 61335 transitions. [2021-10-06 21:14:28,762 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 61335 transitions. Word has length 25 [2021-10-06 21:14:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:28,762 INFO L470 AbstractCegarLoop]: Abstraction has 10534 states and 61335 transitions. [2021-10-06 21:14:28,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 61335 transitions. [2021-10-06 21:14:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:28,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:28,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:28,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:28,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:28,994 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1308874346, now seen corresponding path program 3 times [2021-10-06 21:14:28,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:28,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506441875] [2021-10-06 21:14:28,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:14:28,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:28,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:28,997 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:14:29,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:14:29,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:29,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:29,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:30,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:30,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:30,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506441875] [2021-10-06 21:14:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506441875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:30,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:30,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:30,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666260478] [2021-10-06 21:14:30,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:30,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:30,711 INFO L87 Difference]: Start difference. First operand 10534 states and 61335 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:31,479 INFO L93 Difference]: Finished difference Result 12320 states and 69262 transitions. [2021-10-06 21:14:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:14:31,480 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:31,533 INFO L225 Difference]: With dead ends: 12320 [2021-10-06 21:14:31,533 INFO L226 Difference]: Without dead ends: 12198 [2021-10-06 21:14:31,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 283.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12198 states. [2021-10-06 21:14:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12198 to 10804. [2021-10-06 21:14:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 10803 states have (on average 5.855132833472184) internal successors, (63253), 10803 states have internal predecessors, (63253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 63253 transitions. [2021-10-06 21:14:32,062 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 63253 transitions. Word has length 25 [2021-10-06 21:14:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:32,063 INFO L470 AbstractCegarLoop]: Abstraction has 10804 states and 63253 transitions. [2021-10-06 21:14:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 63253 transitions. [2021-10-06 21:14:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:32,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:32,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:32,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:32,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:32,294 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash 104080768, now seen corresponding path program 4 times [2021-10-06 21:14:32,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:32,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877269286] [2021-10-06 21:14:32,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:14:32,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:32,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:32,297 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:32,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:14:32,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:14:32,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:32,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:32,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:33,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:34,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:34,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877269286] [2021-10-06 21:14:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877269286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:34,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:34,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354172492] [2021-10-06 21:14:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:34,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:34,070 INFO L87 Difference]: Start difference. First operand 10804 states and 63253 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:34,669 INFO L93 Difference]: Finished difference Result 11774 states and 67467 transitions. [2021-10-06 21:14:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:14:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:34,724 INFO L225 Difference]: With dead ends: 11774 [2021-10-06 21:14:34,724 INFO L226 Difference]: Without dead ends: 11692 [2021-10-06 21:14:34,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 368.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2021-10-06 21:14:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 11168. [2021-10-06 21:14:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11168 states, 11167 states have (on average 5.856362496641891) internal successors, (65398), 11167 states have internal predecessors, (65398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11168 states to 11168 states and 65398 transitions. [2021-10-06 21:14:35,197 INFO L78 Accepts]: Start accepts. Automaton has 11168 states and 65398 transitions. Word has length 25 [2021-10-06 21:14:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:35,197 INFO L470 AbstractCegarLoop]: Abstraction has 11168 states and 65398 transitions. [2021-10-06 21:14:35,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 11168 states and 65398 transitions. [2021-10-06 21:14:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:35,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:35,228 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:35,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:35,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:35,428 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1905617706, now seen corresponding path program 5 times [2021-10-06 21:14:35,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:35,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181682698] [2021-10-06 21:14:35,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:14:35,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:35,432 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:35,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:14:36,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:14:36,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:36,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:36,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:37,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:37,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181682698] [2021-10-06 21:14:37,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181682698] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:37,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:37,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:37,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592767797] [2021-10-06 21:14:37,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:37,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:37,279 INFO L87 Difference]: Start difference. First operand 11168 states and 65398 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:38,031 INFO L93 Difference]: Finished difference Result 12240 states and 70298 transitions. [2021-10-06 21:14:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:14:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:38,089 INFO L225 Difference]: With dead ends: 12240 [2021-10-06 21:14:38,089 INFO L226 Difference]: Without dead ends: 12162 [2021-10-06 21:14:38,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 505.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2021-10-06 21:14:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 11452. [2021-10-06 21:14:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 11451 states have (on average 5.870229674264256) internal successors, (67220), 11451 states have internal predecessors, (67220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 67220 transitions. [2021-10-06 21:14:38,716 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 67220 transitions. Word has length 25 [2021-10-06 21:14:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:38,717 INFO L470 AbstractCegarLoop]: Abstraction has 11452 states and 67220 transitions. [2021-10-06 21:14:38,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 67220 transitions. [2021-10-06 21:14:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:38,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:38,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:38,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:38,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:38,960 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:38,961 INFO L82 PathProgramCache]: Analyzing trace with hash -560205014, now seen corresponding path program 6 times [2021-10-06 21:14:38,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:38,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387393802] [2021-10-06 21:14:38,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:14:38,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:38,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:38,964 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:38,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:14:39,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:14:39,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:39,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:40,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:40,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:40,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387393802] [2021-10-06 21:14:40,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387393802] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:40,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:40,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:40,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089204816] [2021-10-06 21:14:40,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:40,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:40,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:40,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:40,782 INFO L87 Difference]: Start difference. First operand 11452 states and 67220 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:41,755 INFO L93 Difference]: Finished difference Result 13682 states and 77711 transitions. [2021-10-06 21:14:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:14:41,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:41,818 INFO L225 Difference]: With dead ends: 13682 [2021-10-06 21:14:41,818 INFO L226 Difference]: Without dead ends: 13574 [2021-10-06 21:14:41,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 364.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2021-10-06 21:14:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11798. [2021-10-06 21:14:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11798 states, 11797 states have (on average 5.916843265236925) internal successors, (69801), 11797 states have internal predecessors, (69801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11798 states to 11798 states and 69801 transitions. [2021-10-06 21:14:42,379 INFO L78 Accepts]: Start accepts. Automaton has 11798 states and 69801 transitions. Word has length 25 [2021-10-06 21:14:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:42,379 INFO L470 AbstractCegarLoop]: Abstraction has 11798 states and 69801 transitions. [2021-10-06 21:14:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11798 states and 69801 transitions. [2021-10-06 21:14:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:42,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:42,416 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:42,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:42,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:42,617 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:42,618 INFO L82 PathProgramCache]: Analyzing trace with hash 878716004, now seen corresponding path program 11 times [2021-10-06 21:14:42,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:42,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341918255] [2021-10-06 21:14:42,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:14:42,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:42,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:42,620 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:14:43,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:14:43,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:43,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:44,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:44,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341918255] [2021-10-06 21:14:44,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341918255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:44,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:44,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:44,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024493936] [2021-10-06 21:14:44,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:44,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:44,246 INFO L87 Difference]: Start difference. First operand 11798 states and 69801 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:46,898 INFO L93 Difference]: Finished difference Result 12510 states and 72236 transitions. [2021-10-06 21:14:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:14:46,899 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:46,986 INFO L225 Difference]: With dead ends: 12510 [2021-10-06 21:14:46,986 INFO L226 Difference]: Without dead ends: 12460 [2021-10-06 21:14:46,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 314.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12460 states. [2021-10-06 21:14:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12460 to 11886. [2021-10-06 21:14:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11885 states have (on average 5.91266302061422) internal successors, (70272), 11885 states have internal predecessors, (70272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 70272 transitions. [2021-10-06 21:14:47,638 INFO L78 Accepts]: Start accepts. Automaton has 11886 states and 70272 transitions. Word has length 25 [2021-10-06 21:14:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:47,638 INFO L470 AbstractCegarLoop]: Abstraction has 11886 states and 70272 transitions. [2021-10-06 21:14:47,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11886 states and 70272 transitions. [2021-10-06 21:14:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:14:47,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:47,675 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:47,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:47,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:47,876 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:14:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:47,877 INFO L82 PathProgramCache]: Analyzing trace with hash 157179028, now seen corresponding path program 12 times [2021-10-06 21:14:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:47,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2752024] [2021-10-06 21:14:47,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:14:48,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:48,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:48,035 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:48,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:14:48,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:14:48,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:48,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:48,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:49,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:49,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:49,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2752024] [2021-10-06 21:14:49,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2752024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:49,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:49,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:14:49,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364706616] [2021-10-06 21:14:49,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:14:49,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:14:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:49,865 INFO L87 Difference]: Start difference. First operand 11886 states and 70272 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:59,650 INFO L93 Difference]: Finished difference Result 12366 states and 71654 transitions. [2021-10-06 21:14:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:14:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:14:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:59,721 INFO L225 Difference]: With dead ends: 12366 [2021-10-06 21:14:59,721 INFO L226 Difference]: Without dead ends: 12316 [2021-10-06 21:14:59,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 297.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:14:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2021-10-06 21:15:00,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 11872. [2021-10-06 21:15:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11872 states, 11871 states have (on average 5.912728498020386) internal successors, (70190), 11871 states have internal predecessors, (70190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11872 states to 11872 states and 70190 transitions. [2021-10-06 21:15:00,131 INFO L78 Accepts]: Start accepts. Automaton has 11872 states and 70190 transitions. Word has length 25 [2021-10-06 21:15:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:00,132 INFO L470 AbstractCegarLoop]: Abstraction has 11872 states and 70190 transitions. [2021-10-06 21:15:00,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11872 states and 70190 transitions. [2021-10-06 21:15:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:00,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:00,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:00,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:00,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:00,368 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2007345314, now seen corresponding path program 7 times [2021-10-06 21:15:00,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:00,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091399396] [2021-10-06 21:15:00,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:15:00,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:00,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:00,372 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:00,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:15:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:01,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:03,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:04,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:04,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091399396] [2021-10-06 21:15:04,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091399396] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:04,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:04,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:04,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583214822] [2021-10-06 21:15:04,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:04,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-06 21:15:04,510 INFO L87 Difference]: Start difference. First operand 11872 states and 70190 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:05,595 INFO L93 Difference]: Finished difference Result 13204 states and 75715 transitions. [2021-10-06 21:15:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:05,667 INFO L225 Difference]: With dead ends: 13204 [2021-10-06 21:15:05,667 INFO L226 Difference]: Without dead ends: 13104 [2021-10-06 21:15:05,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2406.9ms TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-06 21:15:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13104 states. [2021-10-06 21:15:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13104 to 12078. [2021-10-06 21:15:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12078 states, 12077 states have (on average 5.9211724766084295) internal successors, (71510), 12077 states have internal predecessors, (71510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12078 states to 12078 states and 71510 transitions. [2021-10-06 21:15:06,140 INFO L78 Accepts]: Start accepts. Automaton has 12078 states and 71510 transitions. Word has length 25 [2021-10-06 21:15:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:06,140 INFO L470 AbstractCegarLoop]: Abstraction has 12078 states and 71510 transitions. [2021-10-06 21:15:06,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12078 states and 71510 transitions. [2021-10-06 21:15:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:06,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:06,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:06,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:06,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:06,531 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 319836364, now seen corresponding path program 8 times [2021-10-06 21:15:06,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:06,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359466393] [2021-10-06 21:15:06,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:06,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:06,534 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:06,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:15:07,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:07,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:07,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:07,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:10,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:10,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:10,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359466393] [2021-10-06 21:15:10,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359466393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:10,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:10,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:10,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97760375] [2021-10-06 21:15:10,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:10,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:10,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-06 21:15:10,499 INFO L87 Difference]: Start difference. First operand 12078 states and 71510 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:11,459 INFO L93 Difference]: Finished difference Result 13472 states and 77556 transitions. [2021-10-06 21:15:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:11,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:11,522 INFO L225 Difference]: With dead ends: 13472 [2021-10-06 21:15:11,522 INFO L226 Difference]: Without dead ends: 13384 [2021-10-06 21:15:11,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2299.1ms TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-06 21:15:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13384 states. [2021-10-06 21:15:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13384 to 12196. [2021-10-06 21:15:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12196 states, 12195 states have (on average 5.949077490774908) internal successors, (72549), 12195 states have internal predecessors, (72549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12196 states to 12196 states and 72549 transitions. [2021-10-06 21:15:12,062 INFO L78 Accepts]: Start accepts. Automaton has 12196 states and 72549 transitions. Word has length 25 [2021-10-06 21:15:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:12,063 INFO L470 AbstractCegarLoop]: Abstraction has 12196 states and 72549 transitions. [2021-10-06 21:15:12,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12196 states and 72549 transitions. [2021-10-06 21:15:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:12,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:12,099 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:12,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-06 21:15:12,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:12,300 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash 46220221, now seen corresponding path program 13 times [2021-10-06 21:15:12,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:12,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424513773] [2021-10-06 21:15:12,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:15:12,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:12,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:12,303 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:12,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:15:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:13,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:15:13,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:13,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:14,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:14,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424513773] [2021-10-06 21:15:14,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424513773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:14,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:14,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-06 21:15:14,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547259706] [2021-10-06 21:15:14,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:15:14,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:15:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:15:14,235 INFO L87 Difference]: Start difference. First operand 12196 states and 72549 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:19,527 INFO L93 Difference]: Finished difference Result 24550 states and 131148 transitions. [2021-10-06 21:15:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:15:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:19,635 INFO L225 Difference]: With dead ends: 24550 [2021-10-06 21:15:19,635 INFO L226 Difference]: Without dead ends: 24550 [2021-10-06 21:15:19,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3436.1ms TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:15:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24550 states. [2021-10-06 21:15:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24550 to 12976. [2021-10-06 21:15:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12976 states, 12975 states have (on average 6.031136801541426) internal successors, (78254), 12975 states have internal predecessors, (78254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12976 states to 12976 states and 78254 transitions. [2021-10-06 21:15:20,282 INFO L78 Accepts]: Start accepts. Automaton has 12976 states and 78254 transitions. Word has length 25 [2021-10-06 21:15:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:20,282 INFO L470 AbstractCegarLoop]: Abstraction has 12976 states and 78254 transitions. [2021-10-06 21:15:20,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12976 states and 78254 transitions. [2021-10-06 21:15:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:20,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:20,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:20,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:20,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:20,706 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:20,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1625124928, now seen corresponding path program 9 times [2021-10-06 21:15:20,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:20,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335274497] [2021-10-06 21:15:20,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:15:20,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:20,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:20,709 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:20,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:15:21,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:15:21,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:21,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:22,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:22,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:22,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335274497] [2021-10-06 21:15:22,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335274497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:22,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:22,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:22,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145401818] [2021-10-06 21:15:22,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:22,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:22,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:22,722 INFO L87 Difference]: Start difference. First operand 12976 states and 78254 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:23,811 INFO L93 Difference]: Finished difference Result 14870 states and 86631 transitions. [2021-10-06 21:15:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:23,883 INFO L225 Difference]: With dead ends: 14870 [2021-10-06 21:15:23,883 INFO L226 Difference]: Without dead ends: 14748 [2021-10-06 21:15:23,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 290.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14748 states. [2021-10-06 21:15:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14748 to 13282. [2021-10-06 21:15:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13282 states, 13281 states have (on average 6.053535125367066) internal successors, (80397), 13281 states have internal predecessors, (80397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13282 states to 13282 states and 80397 transitions. [2021-10-06 21:15:24,543 INFO L78 Accepts]: Start accepts. Automaton has 13282 states and 80397 transitions. Word has length 25 [2021-10-06 21:15:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:24,544 INFO L470 AbstractCegarLoop]: Abstraction has 13282 states and 80397 transitions. [2021-10-06 21:15:24,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13282 states and 80397 transitions. [2021-10-06 21:15:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:24,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:24,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:24,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:24,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:24,786 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash -145099166, now seen corresponding path program 10 times [2021-10-06 21:15:24,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:24,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602661702] [2021-10-06 21:15:24,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:15:24,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:24,789 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:24,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:15:25,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:15:25,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:25,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:25,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:26,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:26,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:26,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602661702] [2021-10-06 21:15:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602661702] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:26,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:26,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:26,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595217713] [2021-10-06 21:15:26,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:26,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:26,772 INFO L87 Difference]: Start difference. First operand 13282 states and 80397 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:27,615 INFO L93 Difference]: Finished difference Result 14340 states and 84931 transitions. [2021-10-06 21:15:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:15:27,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:27,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:27,684 INFO L225 Difference]: With dead ends: 14340 [2021-10-06 21:15:27,684 INFO L226 Difference]: Without dead ends: 14248 [2021-10-06 21:15:27,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 304.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2021-10-06 21:15:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 13648. [2021-10-06 21:15:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13648 states, 13647 states have (on average 6.047849344178208) internal successors, (82535), 13647 states have internal predecessors, (82535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13648 states to 13648 states and 82535 transitions. [2021-10-06 21:15:28,188 INFO L78 Accepts]: Start accepts. Automaton has 13648 states and 82535 transitions. Word has length 25 [2021-10-06 21:15:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:28,188 INFO L470 AbstractCegarLoop]: Abstraction has 13648 states and 82535 transitions. [2021-10-06 21:15:28,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13648 states and 82535 transitions. [2021-10-06 21:15:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:28,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:28,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:28,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:28,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:28,445 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash 725331212, now seen corresponding path program 11 times [2021-10-06 21:15:28,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:28,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93951974] [2021-10-06 21:15:28,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:15:28,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:28,448 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:28,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:15:29,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:15:29,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:29,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:29,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:30,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:30,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:30,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93951974] [2021-10-06 21:15:30,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93951974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:30,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:30,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:30,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251326609] [2021-10-06 21:15:30,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:30,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:30,579 INFO L87 Difference]: Start difference. First operand 13648 states and 82535 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:31,511 INFO L93 Difference]: Finished difference Result 15802 states and 92640 transitions. [2021-10-06 21:15:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:31,631 INFO L225 Difference]: With dead ends: 15802 [2021-10-06 21:15:31,631 INFO L226 Difference]: Without dead ends: 15696 [2021-10-06 21:15:31,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 298.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2021-10-06 21:15:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 14064. [2021-10-06 21:15:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 14063 states have (on average 6.080494915736329) internal successors, (85510), 14063 states have internal predecessors, (85510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 85510 transitions. [2021-10-06 21:15:32,500 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 85510 transitions. Word has length 25 [2021-10-06 21:15:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:32,500 INFO L470 AbstractCegarLoop]: Abstraction has 14064 states and 85510 transitions. [2021-10-06 21:15:32,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 85510 transitions. [2021-10-06 21:15:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:32,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:32,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:32,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:32,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:32,766 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1336144628, now seen corresponding path program 12 times [2021-10-06 21:15:32,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:32,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943134719] [2021-10-06 21:15:32,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:15:32,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:32,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:32,769 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:32,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:15:33,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:15:33,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:33,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:33,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:34,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:34,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:34,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943134719] [2021-10-06 21:15:34,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943134719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:34,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:34,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:34,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958271635] [2021-10-06 21:15:34,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:34,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:34,920 INFO L87 Difference]: Start difference. First operand 14064 states and 85510 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:35,514 INFO L93 Difference]: Finished difference Result 15232 states and 90770 transitions. [2021-10-06 21:15:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:15:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:35,716 INFO L225 Difference]: With dead ends: 15232 [2021-10-06 21:15:35,716 INFO L226 Difference]: Without dead ends: 15142 [2021-10-06 21:15:35,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 295.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15142 states. [2021-10-06 21:15:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15142 to 14348. [2021-10-06 21:15:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14348 states, 14347 states have (on average 6.089286958946121) internal successors, (87363), 14347 states have internal predecessors, (87363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14348 states to 14348 states and 87363 transitions. [2021-10-06 21:15:36,334 INFO L78 Accepts]: Start accepts. Automaton has 14348 states and 87363 transitions. Word has length 25 [2021-10-06 21:15:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:36,335 INFO L470 AbstractCegarLoop]: Abstraction has 14348 states and 87363 transitions. [2021-10-06 21:15:36,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 14348 states and 87363 transitions. [2021-10-06 21:15:36,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:36,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:36,379 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:36,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:36,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:36,580 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:36,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1504481828, now seen corresponding path program 14 times [2021-10-06 21:15:36,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:36,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512561156] [2021-10-06 21:15:36,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:36,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:36,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:36,584 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:15:37,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:37,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:37,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:37,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:38,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:38,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:38,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512561156] [2021-10-06 21:15:38,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512561156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:38,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:38,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:38,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495243405] [2021-10-06 21:15:38,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:38,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:38,854 INFO L87 Difference]: Start difference. First operand 14348 states and 87363 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:40,923 INFO L93 Difference]: Finished difference Result 15046 states and 89922 transitions. [2021-10-06 21:15:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:15:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:40,989 INFO L225 Difference]: With dead ends: 15046 [2021-10-06 21:15:40,989 INFO L226 Difference]: Without dead ends: 14996 [2021-10-06 21:15:40,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 399.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14996 states. [2021-10-06 21:15:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14996 to 14558. [2021-10-06 21:15:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14558 states, 14557 states have (on average 6.074259806278766) internal successors, (88423), 14557 states have internal predecessors, (88423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14558 states to 14558 states and 88423 transitions. [2021-10-06 21:15:41,560 INFO L78 Accepts]: Start accepts. Automaton has 14558 states and 88423 transitions. Word has length 25 [2021-10-06 21:15:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 14558 states and 88423 transitions. [2021-10-06 21:15:41,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 14558 states and 88423 transitions. [2021-10-06 21:15:41,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:41,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:41,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:41,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-06 21:15:41,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:41,814 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:41,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1585989568, now seen corresponding path program 13 times [2021-10-06 21:15:41,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:41,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142945528] [2021-10-06 21:15:41,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:15:41,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:41,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:41,817 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:41,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:15:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:42,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:43,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:43,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:43,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142945528] [2021-10-06 21:15:43,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142945528] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:43,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:43,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:43,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078472049] [2021-10-06 21:15:43,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:43,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:43,876 INFO L87 Difference]: Start difference. First operand 14558 states and 88423 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:44,665 INFO L93 Difference]: Finished difference Result 16774 states and 98634 transitions. [2021-10-06 21:15:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:44,741 INFO L225 Difference]: With dead ends: 16774 [2021-10-06 21:15:44,741 INFO L226 Difference]: Without dead ends: 16676 [2021-10-06 21:15:44,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 285.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16676 states. [2021-10-06 21:15:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16676 to 14748. [2021-10-06 21:15:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14748 states, 14747 states have (on average 6.098121651861396) internal successors, (89929), 14747 states have internal predecessors, (89929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14748 states to 14748 states and 89929 transitions. [2021-10-06 21:15:45,494 INFO L78 Accepts]: Start accepts. Automaton has 14748 states and 89929 transitions. Word has length 25 [2021-10-06 21:15:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:45,494 INFO L470 AbstractCegarLoop]: Abstraction has 14748 states and 89929 transitions. [2021-10-06 21:15:45,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14748 states and 89929 transitions. [2021-10-06 21:15:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:45,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:45,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:45,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:45,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:45,753 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 81656696, now seen corresponding path program 14 times [2021-10-06 21:15:45,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:45,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983110170] [2021-10-06 21:15:45,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:45,755 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:45,757 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:45,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:15:46,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:46,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:46,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:46,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:47,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:47,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:47,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983110170] [2021-10-06 21:15:47,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983110170] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:47,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:47,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:47,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012488650] [2021-10-06 21:15:47,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:47,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:47,906 INFO L87 Difference]: Start difference. First operand 14748 states and 89929 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:48,724 INFO L93 Difference]: Finished difference Result 17052 states and 100540 transitions. [2021-10-06 21:15:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:48,805 INFO L225 Difference]: With dead ends: 17052 [2021-10-06 21:15:48,805 INFO L226 Difference]: Without dead ends: 16940 [2021-10-06 21:15:48,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 281.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16940 states. [2021-10-06 21:15:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16940 to 14954. [2021-10-06 21:15:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 6.124055373503645) internal successors, (91573), 14953 states have internal predecessors, (91573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 91573 transitions. [2021-10-06 21:15:49,547 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 91573 transitions. Word has length 25 [2021-10-06 21:15:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:49,547 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 91573 transitions. [2021-10-06 21:15:49,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 91573 transitions. [2021-10-06 21:15:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:49,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:49,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:49,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:49,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:49,806 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1221542412, now seen corresponding path program 15 times [2021-10-06 21:15:49,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:49,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866349497] [2021-10-06 21:15:49,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:15:49,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:49,810 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:49,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:15:51,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:15:51,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:51,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:51,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:52,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:52,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866349497] [2021-10-06 21:15:52,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866349497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:52,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:52,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:52,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707612104] [2021-10-06 21:15:52,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:52,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:52,169 INFO L87 Difference]: Start difference. First operand 14954 states and 91573 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:53,090 INFO L93 Difference]: Finished difference Result 17518 states and 104197 transitions. [2021-10-06 21:15:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:53,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:53,181 INFO L225 Difference]: With dead ends: 17518 [2021-10-06 21:15:53,181 INFO L226 Difference]: Without dead ends: 17422 [2021-10-06 21:15:53,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 286.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17422 states. [2021-10-06 21:15:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17422 to 15260. [2021-10-06 21:15:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15260 states, 15259 states have (on average 6.1608231207811786) internal successors, (94008), 15259 states have internal predecessors, (94008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15260 states to 15260 states and 94008 transitions. [2021-10-06 21:15:53,888 INFO L78 Accepts]: Start accepts. Automaton has 15260 states and 94008 transitions. Word has length 25 [2021-10-06 21:15:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:53,888 INFO L470 AbstractCegarLoop]: Abstraction has 15260 states and 94008 transitions. [2021-10-06 21:15:53,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15260 states and 94008 transitions. [2021-10-06 21:15:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:53,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:53,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:53,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:54,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:54,137 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:15:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2103821516, now seen corresponding path program 16 times [2021-10-06 21:15:54,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:54,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193349629] [2021-10-06 21:15:54,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:15:54,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:54,140 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:54,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:15:55,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:15:55,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:55,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:15:55,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:55,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:56,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:56,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193349629] [2021-10-06 21:15:56,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193349629] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:56,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:56,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:56,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315998236] [2021-10-06 21:15:56,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:56,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:56,187 INFO L87 Difference]: Start difference. First operand 15260 states and 94008 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:58,945 INFO L93 Difference]: Finished difference Result 16406 states and 98675 transitions. [2021-10-06 21:15:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:15:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:59,154 INFO L225 Difference]: With dead ends: 16406 [2021-10-06 21:15:59,155 INFO L226 Difference]: Without dead ends: 16320 [2021-10-06 21:15:59,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 295.5ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16320 states. [2021-10-06 21:15:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16320 to 15244. [2021-10-06 21:15:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15244 states, 15243 states have (on average 6.157514924883553) internal successors, (93859), 15243 states have internal predecessors, (93859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15244 states to 15244 states and 93859 transitions. [2021-10-06 21:15:59,824 INFO L78 Accepts]: Start accepts. Automaton has 15244 states and 93859 transitions. Word has length 25 [2021-10-06 21:15:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:59,824 INFO L470 AbstractCegarLoop]: Abstraction has 15244 states and 93859 transitions. [2021-10-06 21:15:59,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15244 states and 93859 transitions. [2021-10-06 21:15:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:15:59,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:59,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:59,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-06 21:16:00,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:00,070 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash -699236084, now seen corresponding path program 17 times [2021-10-06 21:16:00,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:00,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790542822] [2021-10-06 21:16:00,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:16:00,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:00,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:00,073 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:00,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:16:01,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:16:01,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:01,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:16:01,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:01,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:02,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:02,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790542822] [2021-10-06 21:16:02,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790542822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:02,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:02,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:16:02,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791403520] [2021-10-06 21:16:02,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:16:02,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:02,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:16:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:16:02,229 INFO L87 Difference]: Start difference. First operand 15244 states and 93859 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:03,208 INFO L93 Difference]: Finished difference Result 17922 states and 107115 transitions. [2021-10-06 21:16:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:16:03,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:16:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:03,423 INFO L225 Difference]: With dead ends: 17922 [2021-10-06 21:16:03,423 INFO L226 Difference]: Without dead ends: 17832 [2021-10-06 21:16:03,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 290.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:16:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17832 states. [2021-10-06 21:16:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17832 to 15568. [2021-10-06 21:16:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15568 states, 15567 states have (on average 6.199845827712469) internal successors, (96513), 15567 states have internal predecessors, (96513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15568 states to 15568 states and 96513 transitions. [2021-10-06 21:16:04,043 INFO L78 Accepts]: Start accepts. Automaton has 15568 states and 96513 transitions. Word has length 25 [2021-10-06 21:16:04,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:04,044 INFO L470 AbstractCegarLoop]: Abstraction has 15568 states and 96513 transitions. [2021-10-06 21:16:04,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 15568 states and 96513 transitions. [2021-10-06 21:16:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:04,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:04,090 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:04,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:04,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:04,298 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 798758278, now seen corresponding path program 16 times [2021-10-06 21:16:04,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:04,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739020083] [2021-10-06 21:16:04,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:16:04,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:04,302 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:04,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:16:05,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:16:05,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:05,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:16:05,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:05,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:06,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:06,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739020083] [2021-10-06 21:16:06,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739020083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:06,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:06,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:16:06,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788112912] [2021-10-06 21:16:06,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:16:06,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:16:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:16:06,458 INFO L87 Difference]: Start difference. First operand 15568 states and 96513 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:09,861 INFO L93 Difference]: Finished difference Result 20498 states and 118858 transitions. [2021-10-06 21:16:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:16:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:16:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:09,966 INFO L225 Difference]: With dead ends: 20498 [2021-10-06 21:16:09,966 INFO L226 Difference]: Without dead ends: 20450 [2021-10-06 21:16:09,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1682.2ms TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:16:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20450 states. [2021-10-06 21:16:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20450 to 16878. [2021-10-06 21:16:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16878 states, 16877 states have (on average 6.113942051312437) internal successors, (103185), 16877 states have internal predecessors, (103185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16878 states to 16878 states and 103185 transitions. [2021-10-06 21:16:10,695 INFO L78 Accepts]: Start accepts. Automaton has 16878 states and 103185 transitions. Word has length 26 [2021-10-06 21:16:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:10,695 INFO L470 AbstractCegarLoop]: Abstraction has 16878 states and 103185 transitions. [2021-10-06 21:16:10,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16878 states and 103185 transitions. [2021-10-06 21:16:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:10,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:10,745 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:10,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:10,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:10,946 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1029892748, now seen corresponding path program 17 times [2021-10-06 21:16:10,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:10,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642861259] [2021-10-06 21:16:10,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:16:10,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:10,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:10,957 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:10,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:16:12,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:16:12,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:16:12,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:12,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:13,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:13,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642861259] [2021-10-06 21:16:13,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642861259] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:13,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:13,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:16:14,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124654409] [2021-10-06 21:16:14,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:16:14,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:16:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:16:14,001 INFO L87 Difference]: Start difference. First operand 16878 states and 103185 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:22,185 INFO L93 Difference]: Finished difference Result 25778 states and 146133 transitions. [2021-10-06 21:16:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:16:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:16:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:22,443 INFO L225 Difference]: With dead ends: 25778 [2021-10-06 21:16:22,443 INFO L226 Difference]: Without dead ends: 25750 [2021-10-06 21:16:22,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 6286.2ms TimeCoverageRelationStatistics Valid=470, Invalid=1786, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:16:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25750 states. [2021-10-06 21:16:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25750 to 18734. [2021-10-06 21:16:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18734 states, 18733 states have (on average 6.136230182031709) internal successors, (114950), 18733 states have internal predecessors, (114950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18734 states to 18734 states and 114950 transitions. [2021-10-06 21:16:23,301 INFO L78 Accepts]: Start accepts. Automaton has 18734 states and 114950 transitions. Word has length 26 [2021-10-06 21:16:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:23,301 INFO L470 AbstractCegarLoop]: Abstraction has 18734 states and 114950 transitions. [2021-10-06 21:16:23,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 18734 states and 114950 transitions. [2021-10-06 21:16:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:23,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:23,575 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:23,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:23,790 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1434911572, now seen corresponding path program 18 times [2021-10-06 21:16:23,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935815600] [2021-10-06 21:16:23,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:16:23,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:23,793 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:23,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:16:24,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:16:24,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:24,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:16:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:25,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:26,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:26,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935815600] [2021-10-06 21:16:26,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935815600] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:26,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:26,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:16:26,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760036224] [2021-10-06 21:16:26,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:16:26,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:16:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:16:26,114 INFO L87 Difference]: Start difference. First operand 18734 states and 114950 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:32,421 INFO L93 Difference]: Finished difference Result 27598 states and 156560 transitions. [2021-10-06 21:16:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:16:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:16:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:32,568 INFO L225 Difference]: With dead ends: 27598 [2021-10-06 21:16:32,568 INFO L226 Difference]: Without dead ends: 27572 [2021-10-06 21:16:32,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2958.3ms TimeCoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:16:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27572 states. [2021-10-06 21:16:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27572 to 19916. [2021-10-06 21:16:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19916 states, 19915 states have (on average 6.167361285463219) internal successors, (122823), 19915 states have internal predecessors, (122823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19916 states to 19916 states and 122823 transitions. [2021-10-06 21:16:33,669 INFO L78 Accepts]: Start accepts. Automaton has 19916 states and 122823 transitions. Word has length 26 [2021-10-06 21:16:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:33,670 INFO L470 AbstractCegarLoop]: Abstraction has 19916 states and 122823 transitions. [2021-10-06 21:16:33,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 19916 states and 122823 transitions. [2021-10-06 21:16:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:33,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:33,959 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:33,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:34,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:34,175 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash 683137396, now seen corresponding path program 19 times [2021-10-06 21:16:34,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:34,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924754110] [2021-10-06 21:16:34,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:16:34,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:34,179 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:34,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:16:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:16:35,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:16:35,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:35,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:36,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:36,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924754110] [2021-10-06 21:16:36,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924754110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:36,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:36,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:16:36,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2335495] [2021-10-06 21:16:36,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:16:36,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:16:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:16:36,233 INFO L87 Difference]: Start difference. First operand 19916 states and 122823 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:40,951 INFO L93 Difference]: Finished difference Result 30404 states and 172352 transitions. [2021-10-06 21:16:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:16:40,952 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:16:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:41,107 INFO L225 Difference]: With dead ends: 30404 [2021-10-06 21:16:41,107 INFO L226 Difference]: Without dead ends: 30404 [2021-10-06 21:16:41,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2957.2ms TimeCoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:16:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30404 states. [2021-10-06 21:16:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30404 to 21178. [2021-10-06 21:16:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21178 states, 21177 states have (on average 6.213391887425036) internal successors, (131581), 21177 states have internal predecessors, (131581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21178 states to 21178 states and 131581 transitions. [2021-10-06 21:16:42,563 INFO L78 Accepts]: Start accepts. Automaton has 21178 states and 131581 transitions. Word has length 26 [2021-10-06 21:16:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:42,563 INFO L470 AbstractCegarLoop]: Abstraction has 21178 states and 131581 transitions. [2021-10-06 21:16:42,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21178 states and 131581 transitions. [2021-10-06 21:16:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:42,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:42,647 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:42,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:42,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:42,856 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash -633719698, now seen corresponding path program 20 times [2021-10-06 21:16:42,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:42,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255457240] [2021-10-06 21:16:42,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:16:42,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:42,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:42,859 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:42,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:16:44,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:16:44,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:44,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:16:44,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:44,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:45,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:45,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255457240] [2021-10-06 21:16:45,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255457240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:45,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:45,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:16:45,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874209742] [2021-10-06 21:16:45,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:16:45,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:16:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:16:45,183 INFO L87 Difference]: Start difference. First operand 21178 states and 131581 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:53,771 INFO L93 Difference]: Finished difference Result 26572 states and 157154 transitions. [2021-10-06 21:16:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:16:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:16:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:53,918 INFO L225 Difference]: With dead ends: 26572 [2021-10-06 21:16:53,918 INFO L226 Difference]: Without dead ends: 26534 [2021-10-06 21:16:53,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1738.3ms TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:16:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26534 states. [2021-10-06 21:16:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26534 to 21852. [2021-10-06 21:16:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21852 states, 21851 states have (on average 6.217884764999313) internal successors, (135867), 21851 states have internal predecessors, (135867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21852 states to 21852 states and 135867 transitions. [2021-10-06 21:16:54,999 INFO L78 Accepts]: Start accepts. Automaton has 21852 states and 135867 transitions. Word has length 26 [2021-10-06 21:16:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 21852 states and 135867 transitions. [2021-10-06 21:16:54,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21852 states and 135867 transitions. [2021-10-06 21:16:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:16:55,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:55,351 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:55,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:55,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:55,565 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:16:55,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:55,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2100658715, now seen corresponding path program 21 times [2021-10-06 21:16:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:55,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483198601] [2021-10-06 21:16:55,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:16:55,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:55,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:55,568 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:55,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:16:56,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:16:56,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:56,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:16:56,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:57,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:57,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:57,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483198601] [2021-10-06 21:16:57,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483198601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:57,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:57,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:16:57,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20695037] [2021-10-06 21:16:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:16:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:16:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:16:57,631 INFO L87 Difference]: Start difference. First operand 21852 states and 135867 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:34,341 INFO L93 Difference]: Finished difference Result 33808 states and 195744 transitions. [2021-10-06 21:17:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:17:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:17:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:34,512 INFO L225 Difference]: With dead ends: 33808 [2021-10-06 21:17:34,512 INFO L226 Difference]: Without dead ends: 33808 [2021-10-06 21:17:34,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 7961.5ms TimeCoverageRelationStatistics Valid=237, Invalid=690, Unknown=3, NotChecked=0, Total=930 [2021-10-06 21:17:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33808 states. [2021-10-06 21:17:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33808 to 24044. [2021-10-06 21:17:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24044 states, 24043 states have (on average 6.263694214532296) internal successors, (150598), 24043 states have internal predecessors, (150598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24044 states to 24044 states and 150598 transitions. [2021-10-06 21:17:35,945 INFO L78 Accepts]: Start accepts. Automaton has 24044 states and 150598 transitions. Word has length 26 [2021-10-06 21:17:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:35,945 INFO L470 AbstractCegarLoop]: Abstraction has 24044 states and 150598 transitions. [2021-10-06 21:17:35,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 24044 states and 150598 transitions. [2021-10-06 21:17:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:17:36,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:36,019 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:36,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:36,220 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:17:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2016184315, now seen corresponding path program 22 times [2021-10-06 21:17:36,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:36,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873325100] [2021-10-06 21:17:36,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:17:36,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:36,224 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:36,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:17:37,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:17:37,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:37,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:17:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:38,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:38,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:38,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873325100] [2021-10-06 21:17:38,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873325100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:38,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:38,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:17:38,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599875747] [2021-10-06 21:17:38,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:17:38,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:17:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:17:38,842 INFO L87 Difference]: Start difference. First operand 24044 states and 150598 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:50,507 INFO L93 Difference]: Finished difference Result 29250 states and 175274 transitions. [2021-10-06 21:17:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:17:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:17:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:50,655 INFO L225 Difference]: With dead ends: 29250 [2021-10-06 21:17:50,656 INFO L226 Difference]: Without dead ends: 29172 [2021-10-06 21:17:50,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1928.7ms TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:17:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29172 states. [2021-10-06 21:17:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29172 to 24192. [2021-10-06 21:17:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24192 states, 24191 states have (on average 6.260096730188914) internal successors, (151438), 24191 states have internal predecessors, (151438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24192 states to 24192 states and 151438 transitions. [2021-10-06 21:17:51,733 INFO L78 Accepts]: Start accepts. Automaton has 24192 states and 151438 transitions. Word has length 26 [2021-10-06 21:17:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:51,733 INFO L470 AbstractCegarLoop]: Abstraction has 24192 states and 151438 transitions. [2021-10-06 21:17:51,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24192 states and 151438 transitions. [2021-10-06 21:17:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:17:51,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:51,800 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:51,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:52,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:52,001 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:17:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:52,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1649398981, now seen corresponding path program 23 times [2021-10-06 21:17:52,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:52,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984350715] [2021-10-06 21:17:52,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:17:52,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:52,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:52,004 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:52,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:17:53,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:17:53,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:53,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:17:53,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:53,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:54,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:54,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984350715] [2021-10-06 21:17:54,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984350715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:54,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:54,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:17:54,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66075513] [2021-10-06 21:17:54,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:17:54,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:17:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:54,525 INFO L87 Difference]: Start difference. First operand 24192 states and 151438 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:04,469 INFO L93 Difference]: Finished difference Result 34474 states and 199108 transitions. [2021-10-06 21:18:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:18:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:18:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:04,642 INFO L225 Difference]: With dead ends: 34474 [2021-10-06 21:18:04,643 INFO L226 Difference]: Without dead ends: 34474 [2021-10-06 21:18:04,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2390.4ms TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:18:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2021-10-06 21:18:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 24572. [2021-10-06 21:18:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 6.269870986121851) internal successors, (154057), 24571 states have internal predecessors, (154057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 154057 transitions. [2021-10-06 21:18:06,061 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 154057 transitions. Word has length 26 [2021-10-06 21:18:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:06,062 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 154057 transitions. [2021-10-06 21:18:06,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 154057 transitions. [2021-10-06 21:18:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:18:06,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:06,184 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:06,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:06,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:06,397 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:18:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1911386857, now seen corresponding path program 24 times [2021-10-06 21:18:06,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:06,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120524844] [2021-10-06 21:18:06,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:18:06,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:06,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:06,400 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:06,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:18:07,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:18:07,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:18:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:08,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:09,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:09,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120524844] [2021-10-06 21:18:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120524844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:09,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:09,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:18:09,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706443914] [2021-10-06 21:18:09,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:18:09,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:18:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:18:09,272 INFO L87 Difference]: Start difference. First operand 24572 states and 154057 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:15,827 INFO L93 Difference]: Finished difference Result 33216 states and 195791 transitions. [2021-10-06 21:18:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:18:15,828 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:18:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:16,008 INFO L225 Difference]: With dead ends: 33216 [2021-10-06 21:18:16,008 INFO L226 Difference]: Without dead ends: 33216 [2021-10-06 21:18:16,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 4193.2ms TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:18:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33216 states. [2021-10-06 21:18:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33216 to 25854. [2021-10-06 21:18:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25854 states, 25853 states have (on average 6.287703554713186) internal successors, (162556), 25853 states have internal predecessors, (162556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25854 states to 25854 states and 162556 transitions. [2021-10-06 21:18:17,497 INFO L78 Accepts]: Start accepts. Automaton has 25854 states and 162556 transitions. Word has length 26 [2021-10-06 21:18:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:17,497 INFO L470 AbstractCegarLoop]: Abstraction has 25854 states and 162556 transitions. [2021-10-06 21:18:17,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 25854 states and 162556 transitions. [2021-10-06 21:18:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:18:17,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:17,647 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:17,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:17,856 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:18:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash 634322796, now seen corresponding path program 25 times [2021-10-06 21:18:17,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:17,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052992770] [2021-10-06 21:18:17,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:18:17,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:17,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:17,859 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:17,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:18:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:18:19,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:18:19,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:19,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:20,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:20,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052992770] [2021-10-06 21:18:20,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052992770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:20,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:20,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:18:20,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412164179] [2021-10-06 21:18:20,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:18:20,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:18:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:18:20,162 INFO L87 Difference]: Start difference. First operand 25854 states and 162556 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:26,266 INFO L93 Difference]: Finished difference Result 35806 states and 210890 transitions. [2021-10-06 21:18:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:18:26,267 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:18:26,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:26,516 INFO L225 Difference]: With dead ends: 35806 [2021-10-06 21:18:26,516 INFO L226 Difference]: Without dead ends: 35806 [2021-10-06 21:18:26,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3177.2ms TimeCoverageRelationStatistics Valid=310, Invalid=1330, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:18:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35806 states. [2021-10-06 21:18:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35806 to 27506. [2021-10-06 21:18:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27506 states, 27505 states have (on average 6.2950736229776405) internal successors, (173146), 27505 states have internal predecessors, (173146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27506 states to 27506 states and 173146 transitions. [2021-10-06 21:18:28,123 INFO L78 Accepts]: Start accepts. Automaton has 27506 states and 173146 transitions. Word has length 26 [2021-10-06 21:18:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:28,123 INFO L470 AbstractCegarLoop]: Abstraction has 27506 states and 173146 transitions. [2021-10-06 21:18:28,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 27506 states and 173146 transitions. [2021-10-06 21:18:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:18:28,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:28,306 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:28,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:28,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:28,521 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:18:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1038553422, now seen corresponding path program 26 times [2021-10-06 21:18:28,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:28,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243130960] [2021-10-06 21:18:28,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:18:28,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:28,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:28,524 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:28,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:18:29,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:18:29,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:29,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:18:29,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:30,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:31,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:31,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243130960] [2021-10-06 21:18:31,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243130960] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:31,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:31,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:18:31,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585569665] [2021-10-06 21:18:31,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:18:31,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:18:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:18:31,063 INFO L87 Difference]: Start difference. First operand 27506 states and 173146 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:42,867 INFO L93 Difference]: Finished difference Result 37622 states and 223559 transitions. [2021-10-06 21:18:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:18:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:18:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:43,134 INFO L225 Difference]: With dead ends: 37622 [2021-10-06 21:18:43,135 INFO L226 Difference]: Without dead ends: 37622 [2021-10-06 21:18:43,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3950.0ms TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:18:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37622 states. [2021-10-06 21:18:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37622 to 29522. [2021-10-06 21:18:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29522 states, 29521 states have (on average 6.322312929778802) internal successors, (186641), 29521 states have internal predecessors, (186641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29522 states to 29522 states and 186641 transitions. [2021-10-06 21:18:44,965 INFO L78 Accepts]: Start accepts. Automaton has 29522 states and 186641 transitions. Word has length 26 [2021-10-06 21:18:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:44,965 INFO L470 AbstractCegarLoop]: Abstraction has 29522 states and 186641 transitions. [2021-10-06 21:18:44,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29522 states and 186641 transitions. [2021-10-06 21:18:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:18:45,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:45,110 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:45,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:45,324 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:18:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:45,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1487187380, now seen corresponding path program 27 times [2021-10-06 21:18:45,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:45,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761814218] [2021-10-06 21:18:45,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:18:45,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:45,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:45,327 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:45,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:18:46,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:18:46,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:46,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:18:46,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:47,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:48,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:48,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761814218] [2021-10-06 21:18:48,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761814218] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:48,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:48,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:18:48,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385551718] [2021-10-06 21:18:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:18:48,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:18:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:18:48,335 INFO L87 Difference]: Start difference. First operand 29522 states and 186641 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:54,165 INFO L93 Difference]: Finished difference Result 36676 states and 219854 transitions. [2021-10-06 21:18:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:18:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:18:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:54,392 INFO L225 Difference]: With dead ends: 36676 [2021-10-06 21:18:54,392 INFO L226 Difference]: Without dead ends: 36650 [2021-10-06 21:18:54,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2709.0ms TimeCoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:18:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36650 states. [2021-10-06 21:18:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36650 to 29922. [2021-10-06 21:18:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29922 states, 29921 states have (on average 6.328698907122088) internal successors, (189361), 29921 states have internal predecessors, (189361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29922 states to 29922 states and 189361 transitions. [2021-10-06 21:18:56,078 INFO L78 Accepts]: Start accepts. Automaton has 29922 states and 189361 transitions. Word has length 26 [2021-10-06 21:18:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:56,081 INFO L470 AbstractCegarLoop]: Abstraction has 29922 states and 189361 transitions. [2021-10-06 21:18:56,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29922 states and 189361 transitions. [2021-10-06 21:18:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:18:56,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:56,203 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:56,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-06 21:18:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:56,404 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:18:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:56,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1324389268, now seen corresponding path program 28 times [2021-10-06 21:18:56,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:56,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828901455] [2021-10-06 21:18:56,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:18:56,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:56,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:56,408 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:56,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:18:57,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:18:57,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:57,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:18:57,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:57,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:59,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:59,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828901455] [2021-10-06 21:18:59,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828901455] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:59,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:59,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:18:59,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906741175] [2021-10-06 21:18:59,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:18:59,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:18:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:18:59,154 INFO L87 Difference]: Start difference. First operand 29922 states and 189361 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:08,508 INFO L93 Difference]: Finished difference Result 42828 states and 249972 transitions. [2021-10-06 21:19:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:19:08,509 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:19:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:08,776 INFO L225 Difference]: With dead ends: 42828 [2021-10-06 21:19:08,776 INFO L226 Difference]: Without dead ends: 42828 [2021-10-06 21:19:08,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 5091.6ms TimeCoverageRelationStatistics Valid=429, Invalid=1827, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:19:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42828 states. [2021-10-06 21:19:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42828 to 30670. [2021-10-06 21:19:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30670 states, 30669 states have (on average 6.336756985881509) internal successors, (194342), 30669 states have internal predecessors, (194342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30670 states to 30670 states and 194342 transitions. [2021-10-06 21:19:10,537 INFO L78 Accepts]: Start accepts. Automaton has 30670 states and 194342 transitions. Word has length 26 [2021-10-06 21:19:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:10,537 INFO L470 AbstractCegarLoop]: Abstraction has 30670 states and 194342 transitions. [2021-10-06 21:19:10,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 30670 states and 194342 transitions. [2021-10-06 21:19:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:19:10,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:10,977 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:10,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:11,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:11,192 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:19:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1870390535, now seen corresponding path program 29 times [2021-10-06 21:19:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:11,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304714534] [2021-10-06 21:19:11,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:19:11,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:11,195 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:11,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:19:12,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:12,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:12,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:19:12,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:12,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:13,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:13,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304714534] [2021-10-06 21:19:13,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304714534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:13,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:13,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:19:13,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883625145] [2021-10-06 21:19:13,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:19:13,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:19:13,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:19:13,528 INFO L87 Difference]: Start difference. First operand 30670 states and 194342 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:18,189 INFO L93 Difference]: Finished difference Result 38080 states and 228307 transitions. [2021-10-06 21:19:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:19:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:19:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:18,855 INFO L225 Difference]: With dead ends: 38080 [2021-10-06 21:19:18,855 INFO L226 Difference]: Without dead ends: 38056 [2021-10-06 21:19:18,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1815.0ms TimeCoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:19:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38056 states. [2021-10-06 21:19:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38056 to 29900. [2021-10-06 21:19:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29900 states, 29899 states have (on average 6.304792802434864) internal successors, (188507), 29899 states have internal predecessors, (188507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29900 states to 29900 states and 188507 transitions. [2021-10-06 21:19:20,347 INFO L78 Accepts]: Start accepts. Automaton has 29900 states and 188507 transitions. Word has length 26 [2021-10-06 21:19:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:20,347 INFO L470 AbstractCegarLoop]: Abstraction has 29900 states and 188507 transitions. [2021-10-06 21:19:20,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29900 states and 188507 transitions. [2021-10-06 21:19:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:19:20,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:20,448 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:20,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:20,649 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:19:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:20,650 INFO L82 PathProgramCache]: Analyzing trace with hash 522478239, now seen corresponding path program 30 times [2021-10-06 21:19:20,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:20,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239436724] [2021-10-06 21:19:20,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:19:20,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:20,653 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:20,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:19:22,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:19:22,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:19:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:22,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:23,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:23,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239436724] [2021-10-06 21:19:23,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239436724] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:23,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:23,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:19:23,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891784647] [2021-10-06 21:19:23,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:19:23,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:19:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:19:23,810 INFO L87 Difference]: Start difference. First operand 29900 states and 188507 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:28,537 INFO L93 Difference]: Finished difference Result 34448 states and 208622 transitions. [2021-10-06 21:19:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:19:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:19:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:28,750 INFO L225 Difference]: With dead ends: 34448 [2021-10-06 21:19:28,750 INFO L226 Difference]: Without dead ends: 34412 [2021-10-06 21:19:28,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2568.1ms TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:19:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34412 states. [2021-10-06 21:19:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34412 to 30678. [2021-10-06 21:19:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30678 states, 30677 states have (on average 6.267399028588193) internal successors, (192265), 30677 states have internal predecessors, (192265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30678 states to 30678 states and 192265 transitions. [2021-10-06 21:19:30,393 INFO L78 Accepts]: Start accepts. Automaton has 30678 states and 192265 transitions. Word has length 26 [2021-10-06 21:19:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:30,393 INFO L470 AbstractCegarLoop]: Abstraction has 30678 states and 192265 transitions. [2021-10-06 21:19:30,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 30678 states and 192265 transitions. [2021-10-06 21:19:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:19:30,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:30,493 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:30,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-06 21:19:30,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:30,694 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:19:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash 684800940, now seen corresponding path program 31 times [2021-10-06 21:19:30,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:30,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897046130] [2021-10-06 21:19:30,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:19:30,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:30,699 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:30,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:19:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:32,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:19:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:32,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:33,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:33,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897046130] [2021-10-06 21:19:33,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897046130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:33,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:33,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:19:33,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911096488] [2021-10-06 21:19:33,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:19:33,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:33,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:19:33,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:33,517 INFO L87 Difference]: Start difference. First operand 30678 states and 192265 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:42,470 INFO L93 Difference]: Finished difference Result 42992 states and 250254 transitions. [2021-10-06 21:19:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:19:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:19:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:42,722 INFO L225 Difference]: With dead ends: 42992 [2021-10-06 21:19:42,722 INFO L226 Difference]: Without dead ends: 42992 [2021-10-06 21:19:42,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2926.7ms TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:19:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42992 states. [2021-10-06 21:19:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42992 to 31050. [2021-10-06 21:19:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31050 states, 31049 states have (on average 6.279461496344488) internal successors, (194971), 31049 states have internal predecessors, (194971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31050 states to 31050 states and 194971 transitions. [2021-10-06 21:19:44,689 INFO L78 Accepts]: Start accepts. Automaton has 31050 states and 194971 transitions. Word has length 26 [2021-10-06 21:19:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:44,689 INFO L470 AbstractCegarLoop]: Abstraction has 31050 states and 194971 transitions. [2021-10-06 21:19:44,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31050 states and 194971 transitions. [2021-10-06 21:19:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:19:44,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:44,795 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:44,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:44,996 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:19:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:44,996 INFO L82 PathProgramCache]: Analyzing trace with hash 973262562, now seen corresponding path program 32 times [2021-10-06 21:19:44,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:44,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024669892] [2021-10-06 21:19:44,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:19:44,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:44,999 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:45,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:19:46,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:46,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:19:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:47,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:47,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:47,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024669892] [2021-10-06 21:19:47,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024669892] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:47,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:47,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:19:47,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354355127] [2021-10-06 21:19:47,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:19:47,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:19:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:47,904 INFO L87 Difference]: Start difference. First operand 31050 states and 194971 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:25,921 INFO L93 Difference]: Finished difference Result 44040 states and 259800 transitions. [2021-10-06 21:20:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:20:25,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:20:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:26,152 INFO L225 Difference]: With dead ends: 44040 [2021-10-06 21:20:26,152 INFO L226 Difference]: Without dead ends: 44040 [2021-10-06 21:20:26,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 6557.7ms TimeCoverageRelationStatistics Valid=230, Invalid=760, Unknown=2, NotChecked=0, Total=992 [2021-10-06 21:20:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44040 states. [2021-10-06 21:20:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44040 to 33314. [2021-10-06 21:20:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33314 states, 33313 states have (on average 6.315372377150061) internal successors, (210384), 33313 states have internal predecessors, (210384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33314 states to 33314 states and 210384 transitions. [2021-10-06 21:20:27,910 INFO L78 Accepts]: Start accepts. Automaton has 33314 states and 210384 transitions. Word has length 26 [2021-10-06 21:20:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:27,910 INFO L470 AbstractCegarLoop]: Abstraction has 33314 states and 210384 transitions. [2021-10-06 21:20:27,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33314 states and 210384 transitions. [2021-10-06 21:20:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:20:28,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:28,358 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:28,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-06 21:20:28,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:28,573 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:20:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash -737734745, now seen corresponding path program 33 times [2021-10-06 21:20:28,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:28,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182923190] [2021-10-06 21:20:28,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:20:28,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:28,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:28,576 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:28,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:20:30,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:20:30,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:30,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:20:30,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:30,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:31,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:31,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182923190] [2021-10-06 21:20:31,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182923190] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:31,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:31,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:20:31,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767150244] [2021-10-06 21:20:31,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:20:31,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:20:31,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:20:31,730 INFO L87 Difference]: Start difference. First operand 33314 states and 210384 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:32,510 INFO L93 Difference]: Finished difference Result 48940 states and 284139 transitions. [2021-10-06 21:21:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:21:32,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:21:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:32,867 INFO L225 Difference]: With dead ends: 48940 [2021-10-06 21:21:32,868 INFO L226 Difference]: Without dead ends: 48940 [2021-10-06 21:21:32,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 11146.6ms TimeCoverageRelationStatistics Valid=348, Invalid=1541, Unknown=3, NotChecked=0, Total=1892 [2021-10-06 21:21:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48940 states. [2021-10-06 21:21:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48940 to 34786. [2021-10-06 21:21:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34786 states, 34785 states have (on average 6.335086962771309) internal successors, (220366), 34785 states have internal predecessors, (220366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34786 states to 34786 states and 220366 transitions. [2021-10-06 21:21:34,988 INFO L78 Accepts]: Start accepts. Automaton has 34786 states and 220366 transitions. Word has length 26 [2021-10-06 21:21:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:34,989 INFO L470 AbstractCegarLoop]: Abstraction has 34786 states and 220366 transitions. [2021-10-06 21:21:34,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 34786 states and 220366 transitions. [2021-10-06 21:21:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:21:35,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:35,101 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:35,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:35,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:35,302 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:21:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2070824279, now seen corresponding path program 34 times [2021-10-06 21:21:35,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:35,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155155313] [2021-10-06 21:21:35,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:35,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:35,305 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:35,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:21:36,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:36,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:36,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:21:36,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:37,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:38,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:38,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155155313] [2021-10-06 21:21:38,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155155313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:38,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:38,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:21:38,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629491319] [2021-10-06 21:21:38,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:21:38,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:21:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:21:38,213 INFO L87 Difference]: Start difference. First operand 34786 states and 220366 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:49,687 INFO L93 Difference]: Finished difference Result 43400 states and 260059 transitions. [2021-10-06 21:21:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:21:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:21:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:50,160 INFO L225 Difference]: With dead ends: 43400 [2021-10-06 21:21:50,161 INFO L226 Difference]: Without dead ends: 43364 [2021-10-06 21:21:50,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2534.2ms TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:21:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43364 states. [2021-10-06 21:21:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43364 to 34994. [2021-10-06 21:21:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34994 states, 34993 states have (on average 6.326350984482611) internal successors, (221378), 34993 states have internal predecessors, (221378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34994 states to 34994 states and 221378 transitions. [2021-10-06 21:21:52,233 INFO L78 Accepts]: Start accepts. Automaton has 34994 states and 221378 transitions. Word has length 26 [2021-10-06 21:21:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:52,234 INFO L470 AbstractCegarLoop]: Abstraction has 34994 states and 221378 transitions. [2021-10-06 21:21:52,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34994 states and 221378 transitions. [2021-10-06 21:21:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:21:52,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:52,387 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:52,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:52,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:52,602 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:21:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2057382532, now seen corresponding path program 35 times [2021-10-06 21:21:52,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:52,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643412143] [2021-10-06 21:21:52,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:21:52,604 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:52,605 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:52,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:21:54,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:21:54,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:21:54,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:54,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:55,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:55,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643412143] [2021-10-06 21:21:55,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643412143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:55,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:55,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:21:55,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828458597] [2021-10-06 21:21:55,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:21:55,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:21:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:21:55,113 INFO L87 Difference]: Start difference. First operand 34994 states and 221378 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:04,682 INFO L93 Difference]: Finished difference Result 41762 states and 252577 transitions. [2021-10-06 21:22:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:22:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:22:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:05,014 INFO L225 Difference]: With dead ends: 41762 [2021-10-06 21:22:05,014 INFO L226 Difference]: Without dead ends: 41734 [2021-10-06 21:22:05,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2516.2ms TimeCoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:22:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41734 states. [2021-10-06 21:22:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41734 to 35540. [2021-10-06 21:22:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35540 states, 35539 states have (on average 6.330678972396522) internal successors, (224986), 35539 states have internal predecessors, (224986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35540 states to 35540 states and 224986 transitions. [2021-10-06 21:22:07,172 INFO L78 Accepts]: Start accepts. Automaton has 35540 states and 224986 transitions. Word has length 26 [2021-10-06 21:22:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 35540 states and 224986 transitions. [2021-10-06 21:22:07,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 35540 states and 224986 transitions. [2021-10-06 21:22:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:22:07,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:07,371 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:07,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:07,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,572 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:22:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1485810588, now seen corresponding path program 36 times [2021-10-06 21:22:07,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:07,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007201586] [2021-10-06 21:22:07,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:22:07,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:07,576 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:07,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:22:09,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:22:09,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:22:09,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:09,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:10,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:10,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007201586] [2021-10-06 21:22:10,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007201586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:10,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:10,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:22:10,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691935566] [2021-10-06 21:22:10,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:22:10,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:22:10,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:22:10,426 INFO L87 Difference]: Start difference. First operand 35540 states and 224986 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:16,581 INFO L93 Difference]: Finished difference Result 42594 states and 256896 transitions. [2021-10-06 21:22:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:22:16,582 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:22:16,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:16,861 INFO L225 Difference]: With dead ends: 42594 [2021-10-06 21:22:16,861 INFO L226 Difference]: Without dead ends: 42568 [2021-10-06 21:22:16,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2596.3ms TimeCoverageRelationStatistics Valid=258, Invalid=1302, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:22:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42568 states. [2021-10-06 21:22:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42568 to 35424. [2021-10-06 21:22:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35424 states, 35423 states have (on average 6.329729271941958) internal successors, (224218), 35423 states have internal predecessors, (224218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35424 states to 35424 states and 224218 transitions. [2021-10-06 21:22:18,753 INFO L78 Accepts]: Start accepts. Automaton has 35424 states and 224218 transitions. Word has length 26 [2021-10-06 21:22:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:18,754 INFO L470 AbstractCegarLoop]: Abstraction has 35424 states and 224218 transitions. [2021-10-06 21:22:18,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 35424 states and 224218 transitions. [2021-10-06 21:22:18,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:22:18,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:18,865 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:18,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:19,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:19,066 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:22:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1323012476, now seen corresponding path program 37 times [2021-10-06 21:22:19,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:19,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159508720] [2021-10-06 21:22:19,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:22:19,069 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:19,069 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:19,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:22:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:20,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:22:20,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:21,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:22,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:22,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159508720] [2021-10-06 21:22:22,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159508720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:22,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:22,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:22:22,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161260476] [2021-10-06 21:22:22,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:22:22,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:22:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:22:22,260 INFO L87 Difference]: Start difference. First operand 35424 states and 224218 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:30,789 INFO L93 Difference]: Finished difference Result 50006 states and 291743 transitions. [2021-10-06 21:22:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:22:30,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:22:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:31,416 INFO L225 Difference]: With dead ends: 50006 [2021-10-06 21:22:31,416 INFO L226 Difference]: Without dead ends: 50006 [2021-10-06 21:22:31,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 4309.6ms TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:22:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50006 states. [2021-10-06 21:22:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50006 to 36148. [2021-10-06 21:22:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36148 states, 36147 states have (on average 6.333222674080837) internal successors, (228927), 36147 states have internal predecessors, (228927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36148 states to 36148 states and 228927 transitions. [2021-10-06 21:22:33,822 INFO L78 Accepts]: Start accepts. Automaton has 36148 states and 228927 transitions. Word has length 26 [2021-10-06 21:22:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:33,822 INFO L470 AbstractCegarLoop]: Abstraction has 36148 states and 228927 transitions. [2021-10-06 21:22:33,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 36148 states and 228927 transitions. [2021-10-06 21:22:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:22:33,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:33,972 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:33,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:34,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:34,173 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:22:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:34,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1402998763, now seen corresponding path program 15 times [2021-10-06 21:22:34,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:34,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618301041] [2021-10-06 21:22:34,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:22:34,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:34,178 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:34,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:22:35,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:22:35,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:35,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:22:35,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:36,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:37,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:37,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618301041] [2021-10-06 21:22:37,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618301041] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:37,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:37,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:22:37,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790883199] [2021-10-06 21:22:37,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:22:37,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:22:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:22:37,093 INFO L87 Difference]: Start difference. First operand 36148 states and 228927 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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) [2021-10-06 21:22:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:43,820 INFO L93 Difference]: Finished difference Result 77680 states and 442779 transitions. [2021-10-06 21:22:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:22:43,821 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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 26 [2021-10-06 21:22:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:44,778 INFO L225 Difference]: With dead ends: 77680 [2021-10-06 21:22:44,778 INFO L226 Difference]: Without dead ends: 77680 [2021-10-06 21:22:44,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3723.7ms TimeCoverageRelationStatistics Valid=310, Invalid=1330, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:22:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77680 states. [2021-10-06 21:22:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77680 to 42636. [2021-10-06 21:22:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42636 states, 42635 states have (on average 6.396763222704351) internal successors, (272726), 42635 states have internal predecessors, (272726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42636 states to 42636 states and 272726 transitions. [2021-10-06 21:22:47,894 INFO L78 Accepts]: Start accepts. Automaton has 42636 states and 272726 transitions. Word has length 26 [2021-10-06 21:22:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:47,895 INFO L470 AbstractCegarLoop]: Abstraction has 42636 states and 272726 transitions. [2021-10-06 21:22:47,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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) [2021-10-06 21:22:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42636 states and 272726 transitions. [2021-10-06 21:22:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:22:48,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:48,103 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:48,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:48,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:48,304 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:22:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1993552414, now seen corresponding path program 16 times [2021-10-06 21:22:48,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:48,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619652438] [2021-10-06 21:22:48,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:22:48,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:48,308 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:22:49,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:22:49,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:49,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:22:49,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:50,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:51,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:51,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619652438] [2021-10-06 21:22:51,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619652438] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:51,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:51,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:22:51,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207330964] [2021-10-06 21:22:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:22:51,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:22:51,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:22:51,069 INFO L87 Difference]: Start difference. First operand 42636 states and 272726 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2021-10-06 21:22:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:55,803 INFO L93 Difference]: Finished difference Result 59172 states and 353186 transitions. [2021-10-06 21:22:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:22:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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 26 [2021-10-06 21:22:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:56,208 INFO L225 Difference]: With dead ends: 59172 [2021-10-06 21:22:56,209 INFO L226 Difference]: Without dead ends: 59148 [2021-10-06 21:22:56,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2561.2ms TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:22:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59148 states. [2021-10-06 21:22:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59148 to 44340. [2021-10-06 21:22:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44340 states, 44339 states have (on average 6.344189088612734) internal successors, (281295), 44339 states have internal predecessors, (281295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44340 states to 44340 states and 281295 transitions. [2021-10-06 21:22:58,697 INFO L78 Accepts]: Start accepts. Automaton has 44340 states and 281295 transitions. Word has length 26 [2021-10-06 21:22:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:58,697 INFO L470 AbstractCegarLoop]: Abstraction has 44340 states and 281295 transitions. [2021-10-06 21:22:58,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2021-10-06 21:22:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 44340 states and 281295 transitions. [2021-10-06 21:22:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:22:59,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:59,332 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:59,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:59,548 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:22:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash -590711975, now seen corresponding path program 17 times [2021-10-06 21:22:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:59,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854841105] [2021-10-06 21:22:59,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:22:59,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:59,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:59,551 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:59,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:23:01,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:23:01,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:23:01,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:01,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:02,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854841105] [2021-10-06 21:23:02,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854841105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:02,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:02,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:23:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532644040] [2021-10-06 21:23:02,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:23:02,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:23:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:02,626 INFO L87 Difference]: Start difference. First operand 44340 states and 281295 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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) [2021-10-06 21:23:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:39,946 INFO L93 Difference]: Finished difference Result 84348 states and 492787 transitions. [2021-10-06 21:23:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:23:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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 26 [2021-10-06 21:23:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:41,052 INFO L225 Difference]: With dead ends: 84348 [2021-10-06 21:23:41,052 INFO L226 Difference]: Without dead ends: 84348 [2021-10-06 21:23:41,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 9394.8ms TimeCoverageRelationStatistics Valid=299, Invalid=889, Unknown=2, NotChecked=0, Total=1190 [2021-10-06 21:23:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84348 states. [2021-10-06 21:23:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84348 to 48900. [2021-10-06 21:23:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48900 states, 48899 states have (on average 6.411848913065707) internal successors, (313533), 48899 states have internal predecessors, (313533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48900 states to 48900 states and 313533 transitions. [2021-10-06 21:23:44,104 INFO L78 Accepts]: Start accepts. Automaton has 48900 states and 313533 transitions. Word has length 26 [2021-10-06 21:23:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:44,105 INFO L470 AbstractCegarLoop]: Abstraction has 48900 states and 313533 transitions. [2021-10-06 21:23:44,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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) [2021-10-06 21:23:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 48900 states and 313533 transitions. [2021-10-06 21:23:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:23:44,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:44,883 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:44,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2021-10-06 21:23:45,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:45,096 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2055378226, now seen corresponding path program 18 times [2021-10-06 21:23:45,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:45,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014198149] [2021-10-06 21:23:45,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:45,098 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:45,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:45,099 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:45,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:23:46,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:23:46,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:23:46,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:47,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:47,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014198149] [2021-10-06 21:23:47,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014198149] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:47,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:47,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:23:47,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581233541] [2021-10-06 21:23:47,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:47,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:47,674 INFO L87 Difference]: Start difference. First operand 48900 states and 313533 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2021-10-06 21:23:58,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:58,082 INFO L93 Difference]: Finished difference Result 79876 states and 469932 transitions. [2021-10-06 21:23:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:23:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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 26 [2021-10-06 21:23:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:58,694 INFO L225 Difference]: With dead ends: 79876 [2021-10-06 21:23:58,694 INFO L226 Difference]: Without dead ends: 79860 [2021-10-06 21:23:58,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 3606.6ms TimeCoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:23:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79860 states. [2021-10-06 21:24:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79860 to 52184. [2021-10-06 21:24:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52184 states, 52183 states have (on average 6.443305290995152) internal successors, (336231), 52183 states have internal predecessors, (336231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52184 states to 52184 states and 336231 transitions. [2021-10-06 21:24:02,106 INFO L78 Accepts]: Start accepts. Automaton has 52184 states and 336231 transitions. Word has length 26 [2021-10-06 21:24:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:02,106 INFO L470 AbstractCegarLoop]: Abstraction has 52184 states and 336231 transitions. [2021-10-06 21:24:02,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2021-10-06 21:24:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 52184 states and 336231 transitions. [2021-10-06 21:24:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:24:02,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:02,795 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:02,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2021-10-06 21:24:03,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:03,010 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1070667221, now seen corresponding path program 19 times [2021-10-06 21:24:03,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:03,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824707550] [2021-10-06 21:24:03,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:24:03,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:03,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:03,013 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:03,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:24:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:04,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:24:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:04,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:05,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:05,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824707550] [2021-10-06 21:24:05,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824707550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:05,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:05,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:24:05,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922780202] [2021-10-06 21:24:05,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:24:05,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:24:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:24:05,507 INFO L87 Difference]: Start difference. First operand 52184 states and 336231 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 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) Received shutdown request... [2021-10-06 21:24:50,979 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:24:51,000 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:24:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:24:51,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:24:51,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:51,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:51,501 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). [2021-10-06 21:24:51,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:24:51,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:24:51,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:24:51,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:24:51,503 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:24:51,504 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:24:51,505 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 21:24:51,510 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:24:51,510 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:24:51,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:24:51 BasicIcfg [2021-10-06 21:24:51,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:24:51,513 INFO L168 Benchmark]: Toolchain (without parser) took 769783.20 ms. Allocated memory was 173.0 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 147.8 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,513 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:24:51,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.28 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 136.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 173.0 MB. Free memory was 136.6 MB in the beginning and 135.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,514 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 173.0 MB. Free memory was 135.1 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,515 INFO L168 Benchmark]: RCFGBuilder took 698.91 ms. Allocated memory is still 173.0 MB. Free memory was 133.6 MB in the beginning and 154.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,515 INFO L168 Benchmark]: TraceAbstraction took 768635.15 ms. Allocated memory was 173.0 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 154.4 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. [2021-10-06 21:24:51,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 351.28 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 136.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 173.0 MB. Free memory was 136.6 MB in the beginning and 135.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.89 ms. Allocated memory is still 173.0 MB. Free memory was 135.1 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.91 ms. Allocated memory is still 173.0 MB. Free memory was 133.6 MB in the beginning and 154.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 768635.15 ms. Allocated memory was 173.0 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 154.4 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17042.6ms, 137 PlacesBefore, 56 PlacesAfterwards, 134 TransitionsBefore, 47 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 65 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 125 TotalNumberOfCompositions, 1958 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1958, positive: 1958, positive conditional: 0, positive unconditional: 1958, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1049, positive: 1049, positive conditional: 0, positive unconditional: 1049, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1049, positive: 1049, positive conditional: 0, positive unconditional: 1049, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1958, positive: 909, positive conditional: 0, positive unconditional: 909, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1049, unknown conditional: 0, unknown unconditional: 1049] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (52184states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (3340 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 149 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 768491.6ms, OverallIterations: 89, TraceHistogramMax: 4, EmptinessCheckTime: 7922.3ms, AutomataDifference: 488305.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17124.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6269 SDtfs, 21235 SDslu, 34713 SDs, 0 SdLazy, 36352 SolverSat, 1859 SolverUnsat, 88 SolverUnknown, 0 SolverNotchecked, 328431.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4666 GetRequests, 3034 SyntacticMatches, 0 SemanticMatches, 1632 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7707 ImplicationChecksByTransitivity, 149160.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52184occurred in iteration=88, InterpolantAutomatonStates: 1578, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 66531.6ms AutomataMinimizationTime, 88 MinimizatonAttempts, 388932 StatesRemovedByMinimization, 78 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 779.4ms SsaConstructionTime, 11200.5ms SatisfiabilityAnalysisTime, 102176.8ms InterpolantComputationTime, 2033 NumberOfCodeBlocks, 2033 NumberOfCodeBlocksAsserted, 168 NumberOfCheckSat, 3888 ConstructedInterpolants, 564 QuantifiedInterpolants, 45867 SizeOfPredicates, 432 NumberOfNonLiveVariables, 9915 ConjunctsInSsa, 876 ConjunctsInUnsatCore, 178 InterpolantComputations, 22 PerfectInterpolantSequences, 96/910 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown