/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:13:46,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:13:46,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:13:46,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:13:47,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:13:47,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:13:47,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:13:47,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:13:47,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:13:47,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:13:47,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:13:47,088 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:13:47,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:13:47,089 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:13:47,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:13:47,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:13:47,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:13:47,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:13:47,090 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:13:47,090 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:13:47,090 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:13:47,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:13:47,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:13:47,091 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:13:47,091 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:13:47,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:13:47,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:13:47,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:13:47,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:13:47,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:13:47,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:13:47,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:13:47,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:13:47,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:13:47,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:13:47,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:13:47,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:13:47,093 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:13:47,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:13:47,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:13:47,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:13:47,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:13:47,560 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:13:47,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-08 17:13:47,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c34815d8/e9e887c8f5cb42599a1d1b8c3f510f63/FLAG5d64ef39e [2021-10-08 17:13:48,367 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:13:48,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-08 17:13:48,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c34815d8/e9e887c8f5cb42599a1d1b8c3f510f63/FLAG5d64ef39e [2021-10-08 17:13:48,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c34815d8/e9e887c8f5cb42599a1d1b8c3f510f63 [2021-10-08 17:13:48,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:13:48,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:13:48,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:13:48,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:13:48,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:13:48,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:13:48" (1/1) ... [2021-10-08 17:13:48,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31166037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:48, skipping insertion in model container [2021-10-08 17:13:48,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:13:48" (1/1) ... [2021-10-08 17:13:48,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:13:48,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:13:48,949 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2413,2426] [2021-10-08 17:13:48,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:13:48,968 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:13:48,995 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2413,2426] [2021-10-08 17:13:48,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:13:49,028 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:13:49,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49 WrapperNode [2021-10-08 17:13:49,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:13:49,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:13:49,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:13:49,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:13:49,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:13:49,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:13:49,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:13:49,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:13:49,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:13:49,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:13:49,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:13:49,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:13:49,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (1/1) ... [2021-10-08 17:13:49,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:13:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:13:49,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:13:49,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:13:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:13:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:13:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:13:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:13:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:13:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:13:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:13:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:13:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:13:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:13:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:13:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:13:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:13:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:13:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:13:49,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:13:49,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:13:49,920 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-08 17:13:49,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:13:49 BoogieIcfgContainer [2021-10-08 17:13:49,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:13:49,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:13:49,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:13:49,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:13:49,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:13:48" (1/3) ... [2021-10-08 17:13:49,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45025b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:13:49, skipping insertion in model container [2021-10-08 17:13:49,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:13:49" (2/3) ... [2021-10-08 17:13:49,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45025b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:13:49, skipping insertion in model container [2021-10-08 17:13:49,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:13:49" (3/3) ... [2021-10-08 17:13:49,942 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2021-10-08 17:13:49,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:13:49,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-08 17:13:49,950 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:13:50,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,015 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,019 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,019 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,020 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,020 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,027 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,037 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,038 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,038 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,039 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,043 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,043 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:13:50,071 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:13:50,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:13:50,166 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:13:50,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-08 17:13:50,191 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:13:50,209 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-08 17:13:50,213 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-08 17:13:50,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 244 flow [2021-10-08 17:13:50,303 INFO L129 PetriNetUnfolder]: 7/107 cut-off events. [2021-10-08 17:13:50,304 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:13:50,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-10-08 17:13:50,317 INFO L116 LiptonReduction]: Number of co-enabled transitions 1190 [2021-10-08 17:14:01,802 INFO L131 LiptonReduction]: Checked pairs total: 2874 [2021-10-08 17:14:01,803 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-08 17:14:01,820 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-08 17:14:01,875 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:14:01,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:01,885 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:14:01,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:01,892 INFO L82 PathProgramCache]: Analyzing trace with hash 413, now seen corresponding path program 1 times [2021-10-08 17:14:01,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:01,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170632844] [2021-10-08 17:14:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:01,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:01,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:01,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:14:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:01,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:14:01,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:01,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:01,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:01,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170632844] [2021-10-08 17:14:01,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170632844] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:01,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:01,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:14:01,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095805783] [2021-10-08 17:14:01,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:14:01,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:14:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:14:02,006 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:02,038 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-08 17:14:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:14:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 17:14:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:02,057 INFO L225 Difference]: With dead ends: 252 [2021-10-08 17:14:02,057 INFO L226 Difference]: Without dead ends: 252 [2021-10-08 17:14:02,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:14:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-08 17:14:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-08 17:14:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-08 17:14:02,137 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-08 17:14:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:02,138 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-08 17:14:02,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-08 17:14:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:14:02,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:02,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:14:02,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:14:02,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:02,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash 404918, now seen corresponding path program 1 times [2021-10-08 17:14:02,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:02,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914725462] [2021-10-08 17:14:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:02,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:02,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:02,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:02,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:14:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:02,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:14:02,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:02,618 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:02,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:02,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:02,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:02,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914725462] [2021-10-08 17:14:02,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914725462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:02,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:14:02,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540818071] [2021-10-08 17:14:02,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:14:02,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:14:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:02,686 INFO L87 Difference]: Start difference. First operand 252 states and 844 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:02,732 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-08 17:14:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:14:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:02,737 INFO L225 Difference]: With dead ends: 240 [2021-10-08 17:14:02,738 INFO L226 Difference]: Without dead ends: 240 [2021-10-08 17:14:02,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-08 17:14:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-08 17:14:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-08 17:14:02,764 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-08 17:14:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:02,765 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-08 17:14:02,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-08 17:14:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:14:02,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:02,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:14:02,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:02,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:02,981 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash 404916, now seen corresponding path program 1 times [2021-10-08 17:14:02,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:02,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801283471] [2021-10-08 17:14:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:02,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:02,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:02,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:14:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:03,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:03,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:03,203 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:03,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:14:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:03,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:03,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:03,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801283471] [2021-10-08 17:14:03,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801283471] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:03,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:03,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:03,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087429389] [2021-10-08 17:14:03,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:03,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:03,427 INFO L87 Difference]: Start difference. First operand 240 states and 813 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:03,490 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-08 17:14:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:03,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:14:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:03,497 INFO L225 Difference]: With dead ends: 228 [2021-10-08 17:14:03,498 INFO L226 Difference]: Without dead ends: 228 [2021-10-08 17:14:03,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-08 17:14:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-08 17:14:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-08 17:14:03,544 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-08 17:14:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:03,545 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-08 17:14:03,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-08 17:14:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:14:03,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:03,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:14:03,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:03,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:03,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash 389134153, now seen corresponding path program 1 times [2021-10-08 17:14:03,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:03,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678632940] [2021-10-08 17:14:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:03,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:03,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:03,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:03,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:14:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:03,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:14:03,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:03,849 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:03,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:03,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:03,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:03,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678632940] [2021-10-08 17:14:03,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678632940] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:03,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:03,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:14:03,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928289629] [2021-10-08 17:14:03,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:14:03,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:14:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:03,913 INFO L87 Difference]: Start difference. First operand 228 states and 782 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:03,952 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-08 17:14:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:14:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:03,957 INFO L225 Difference]: With dead ends: 210 [2021-10-08 17:14:03,957 INFO L226 Difference]: Without dead ends: 210 [2021-10-08 17:14:03,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-08 17:14:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-08 17:14:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-08 17:14:03,974 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-08 17:14:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:03,974 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-08 17:14:03,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-08 17:14:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:14:03,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:03,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:14:03,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:04,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:04,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:04,191 INFO L82 PathProgramCache]: Analyzing trace with hash 389134154, now seen corresponding path program 1 times [2021-10-08 17:14:04,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:04,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005466488] [2021-10-08 17:14:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:04,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:04,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:04,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:14:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:04,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:04,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:04,416 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:04,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:14:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:04,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:04,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:04,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005466488] [2021-10-08 17:14:04,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005466488] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:04,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:04,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:04,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632649504] [2021-10-08 17:14:04,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:04,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:04,622 INFO L87 Difference]: Start difference. First operand 210 states and 723 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:04,652 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-08 17:14:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:14:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:04,655 INFO L225 Difference]: With dead ends: 192 [2021-10-08 17:14:04,655 INFO L226 Difference]: Without dead ends: 192 [2021-10-08 17:14:04,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-08 17:14:04,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-08 17:14:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-08 17:14:04,667 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-08 17:14:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:04,667 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-08 17:14:04,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-08 17:14:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:14:04,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:04,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:04,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:04,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:04,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:04,884 INFO L82 PathProgramCache]: Analyzing trace with hash 295777236, now seen corresponding path program 1 times [2021-10-08 17:14:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:04,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386518553] [2021-10-08 17:14:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:04,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:04,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:04,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:14:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:04,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:04,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:05,096 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:05,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-08 17:14:05,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2021-10-08 17:14:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:05,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:05,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:05,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386518553] [2021-10-08 17:14:05,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386518553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:05,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:05,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109969271] [2021-10-08 17:14:05,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:05,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:05,444 INFO L87 Difference]: Start difference. First operand 192 states and 664 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:05,473 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-08 17:14:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:14:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:05,476 INFO L225 Difference]: With dead ends: 160 [2021-10-08 17:14:05,476 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 17:14:05,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:05,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 17:14:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 17:14:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-08 17:14:05,486 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-08 17:14:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:05,486 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-08 17:14:05,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-08 17:14:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:14:05,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:05,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:05,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:05,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:05,701 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:05,702 INFO L82 PathProgramCache]: Analyzing trace with hash 295777237, now seen corresponding path program 1 times [2021-10-08 17:14:05,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:05,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476705653] [2021-10-08 17:14:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:05,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:05,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:05,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:05,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:14:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:05,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:05,825 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:05,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:05,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:05,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:05,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476705653] [2021-10-08 17:14:05,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476705653] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:05,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002837001] [2021-10-08 17:14:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:14:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:14:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:05,943 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:05,975 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-08 17:14:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:14:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:05,978 INFO L225 Difference]: With dead ends: 128 [2021-10-08 17:14:05,978 INFO L226 Difference]: Without dead ends: 128 [2021-10-08 17:14:05,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-08 17:14:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-08 17:14:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-08 17:14:05,985 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-08 17:14:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:05,986 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-08 17:14:05,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:05,986 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-08 17:14:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:14:05,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:05,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:06,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:06,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:06,202 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:06,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1826700178, now seen corresponding path program 1 times [2021-10-08 17:14:06,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:06,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349079750] [2021-10-08 17:14:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:06,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:06,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:06,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:06,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:14:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:06,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:06,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:06,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:06,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:06,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349079750] [2021-10-08 17:14:06,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349079750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:06,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:06,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:06,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263561656] [2021-10-08 17:14:06,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:06,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:06,377 INFO L87 Difference]: Start difference. First operand 128 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:06,404 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-08 17:14:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:14:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:06,406 INFO L225 Difference]: With dead ends: 124 [2021-10-08 17:14:06,406 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 17:14:06,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 17:14:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-08 17:14:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-08 17:14:06,411 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-08 17:14:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:06,412 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-08 17:14:06,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-08 17:14:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:14:06,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:06,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:06,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:06,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:06,627 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash -293618728, now seen corresponding path program 2 times [2021-10-08 17:14:06,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:06,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576039179] [2021-10-08 17:14:06,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:06,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:06,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:06,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:14:06,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:14:06,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:06,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:14:06,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:06,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:06,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:06,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576039179] [2021-10-08 17:14:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576039179] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:06,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:06,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:14:06,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818384037] [2021-10-08 17:14:06,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:14:06,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:14:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:06,831 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:06,899 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-08 17:14:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:14:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:14:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:06,902 INFO L225 Difference]: With dead ends: 218 [2021-10-08 17:14:06,902 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 17:14:06,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 17:14:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-08 17:14:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-08 17:14:06,911 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-08 17:14:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:06,911 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-08 17:14:06,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-08 17:14:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:14:06,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:06,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:06,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:07,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,127 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash 399276935, now seen corresponding path program 1 times [2021-10-08 17:14:07,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:07,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158816624] [2021-10-08 17:14:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:07,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:07,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:07,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:14:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:07,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:07,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:07,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:07,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:07,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158816624] [2021-10-08 17:14:07,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158816624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:07,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:07,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:07,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715864485] [2021-10-08 17:14:07,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:07,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:07,303 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:07,317 INFO L93 Difference]: Finished difference Result 242 states and 682 transitions. [2021-10-08 17:14:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:07,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:14:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:07,321 INFO L225 Difference]: With dead ends: 242 [2021-10-08 17:14:07,321 INFO L226 Difference]: Without dead ends: 242 [2021-10-08 17:14:07,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-08 17:14:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-10-08 17:14:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-10-08 17:14:07,332 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 18 [2021-10-08 17:14:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:07,333 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-10-08 17:14:07,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-10-08 17:14:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:14:07,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:07,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:07,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:07,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,550 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1301348123, now seen corresponding path program 1 times [2021-10-08 17:14:07,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:07,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080716401] [2021-10-08 17:14:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:07,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:07,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:07,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:14:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:07,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:07,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:07,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080716401] [2021-10-08 17:14:07,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080716401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:07,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:07,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:07,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602949261] [2021-10-08 17:14:07,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:07,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:07,738 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:07,760 INFO L93 Difference]: Finished difference Result 232 states and 642 transitions. [2021-10-08 17:14:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:14:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:07,763 INFO L225 Difference]: With dead ends: 232 [2021-10-08 17:14:07,763 INFO L226 Difference]: Without dead ends: 232 [2021-10-08 17:14:07,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-08 17:14:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2021-10-08 17:14:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-08 17:14:07,777 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-08 17:14:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:07,777 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-08 17:14:07,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-08 17:14:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:07,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:07,779 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:07,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:07,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:07,994 INFO L82 PathProgramCache]: Analyzing trace with hash 625578938, now seen corresponding path program 1 times [2021-10-08 17:14:07,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:07,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662439963] [2021-10-08 17:14:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:07,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:07,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:08,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:14:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:08,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:14:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:08,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662439963] [2021-10-08 17:14:08,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662439963] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:08,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:08,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 17:14:08,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634043985] [2021-10-08 17:14:08,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:14:08,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:08,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:14:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:08,228 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:08,255 INFO L93 Difference]: Finished difference Result 222 states and 591 transitions. [2021-10-08 17:14:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:08,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 17:14:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:08,258 INFO L225 Difference]: With dead ends: 222 [2021-10-08 17:14:08,258 INFO L226 Difference]: Without dead ends: 222 [2021-10-08 17:14:08,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-08 17:14:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2021-10-08 17:14:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.773480662983425) internal successors, (502), 181 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 502 transitions. [2021-10-08 17:14:08,267 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 502 transitions. Word has length 20 [2021-10-08 17:14:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 502 transitions. [2021-10-08 17:14:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 502 transitions. [2021-10-08 17:14:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:08,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:08,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:08,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 17:14:08,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:08,488 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1392507048, now seen corresponding path program 1 times [2021-10-08 17:14:08,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:08,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203004512] [2021-10-08 17:14:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:08,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:08,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:08,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:14:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:08,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:14:08,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:08,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203004512] [2021-10-08 17:14:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203004512] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:08,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:08,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:14:08,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227927280] [2021-10-08 17:14:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:14:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:14:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:08,755 INFO L87 Difference]: Start difference. First operand 182 states and 502 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:08,948 INFO L93 Difference]: Finished difference Result 416 states and 1099 transitions. [2021-10-08 17:14:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:14:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 17:14:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:08,952 INFO L225 Difference]: With dead ends: 416 [2021-10-08 17:14:08,952 INFO L226 Difference]: Without dead ends: 358 [2021-10-08 17:14:08,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:08,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-08 17:14:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 206. [2021-10-08 17:14:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.897560975609756) internal successors, (594), 205 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 594 transitions. [2021-10-08 17:14:08,980 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 594 transitions. Word has length 20 [2021-10-08 17:14:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:08,980 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 594 transitions. [2021-10-08 17:14:08,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 594 transitions. [2021-10-08 17:14:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:08,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:08,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:08,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:09,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:09,199 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:09,200 INFO L82 PathProgramCache]: Analyzing trace with hash 356766818, now seen corresponding path program 1 times [2021-10-08 17:14:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:09,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069802677] [2021-10-08 17:14:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:09,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:09,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:09,203 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:14:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:09,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:14:09,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:09,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:09,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:09,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069802677] [2021-10-08 17:14:09,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069802677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:09,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:09,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:14:09,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990142131] [2021-10-08 17:14:09,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:14:09,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:14:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:14:09,510 INFO L87 Difference]: Start difference. First operand 206 states and 594 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:09,976 INFO L93 Difference]: Finished difference Result 1034 states and 2890 transitions. [2021-10-08 17:14:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:14:09,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 17:14:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:09,986 INFO L225 Difference]: With dead ends: 1034 [2021-10-08 17:14:09,986 INFO L226 Difference]: Without dead ends: 926 [2021-10-08 17:14:09,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:14:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-08 17:14:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 514. [2021-10-08 17:14:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.0331384015594542) internal successors, (1556), 513 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1556 transitions. [2021-10-08 17:14:10,016 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1556 transitions. Word has length 20 [2021-10-08 17:14:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:10,017 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1556 transitions. [2021-10-08 17:14:10,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1556 transitions. [2021-10-08 17:14:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:10,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:10,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:10,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:10,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:10,233 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1078517299, now seen corresponding path program 1 times [2021-10-08 17:14:10,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:10,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354290798] [2021-10-08 17:14:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:10,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:10,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:10,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:14:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:10,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:10,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:10,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:10,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354290798] [2021-10-08 17:14:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354290798] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:10,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:10,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:14:10,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991227828] [2021-10-08 17:14:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:14:10,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:14:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:14:10,572 INFO L87 Difference]: Start difference. First operand 514 states and 1556 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:11,030 INFO L93 Difference]: Finished difference Result 1684 states and 5069 transitions. [2021-10-08 17:14:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:14:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:11,045 INFO L225 Difference]: With dead ends: 1684 [2021-10-08 17:14:11,045 INFO L226 Difference]: Without dead ends: 1558 [2021-10-08 17:14:11,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 189.4ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:14:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-10-08 17:14:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1098. [2021-10-08 17:14:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 3.163172288058341) internal successors, (3470), 1097 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 3470 transitions. [2021-10-08 17:14:11,098 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 3470 transitions. Word has length 22 [2021-10-08 17:14:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:11,098 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 3470 transitions. [2021-10-08 17:14:11,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 3470 transitions. [2021-10-08 17:14:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:11,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:11,119 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:11,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:11,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:11,332 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash -80678561, now seen corresponding path program 1 times [2021-10-08 17:14:11,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:11,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489950209] [2021-10-08 17:14:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:11,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:11,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:11,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:14:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:11,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:14:11,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:11,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:11,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:11,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489950209] [2021-10-08 17:14:11,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489950209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:11,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:11,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 17:14:11,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568689100] [2021-10-08 17:14:11,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:14:11,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:14:11,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:11,617 INFO L87 Difference]: Start difference. First operand 1098 states and 3470 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:11,645 INFO L93 Difference]: Finished difference Result 994 states and 2764 transitions. [2021-10-08 17:14:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:11,653 INFO L225 Difference]: With dead ends: 994 [2021-10-08 17:14:11,653 INFO L226 Difference]: Without dead ends: 994 [2021-10-08 17:14:11,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-10-08 17:14:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 914. [2021-10-08 17:14:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.8127053669222346) internal successors, (2568), 913 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2568 transitions. [2021-10-08 17:14:11,687 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2568 transitions. Word has length 22 [2021-10-08 17:14:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:11,688 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 2568 transitions. [2021-10-08 17:14:11,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2568 transitions. [2021-10-08 17:14:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 17:14:11,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:11,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:11,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:11,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:11,904 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash -296105680, now seen corresponding path program 1 times [2021-10-08 17:14:11,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:11,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202463913] [2021-10-08 17:14:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:11,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:11,908 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:11,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:14:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:12,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:14:12,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:12,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:12,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:12,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202463913] [2021-10-08 17:14:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202463913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:12,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:12,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 17:14:12,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957035753] [2021-10-08 17:14:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:14:12,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:14:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:12,293 INFO L87 Difference]: Start difference. First operand 914 states and 2568 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:12,458 INFO L93 Difference]: Finished difference Result 902 states and 2534 transitions. [2021-10-08 17:14:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:14:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 17:14:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:12,459 INFO L225 Difference]: With dead ends: 902 [2021-10-08 17:14:12,459 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 17:14:12,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:14:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 17:14:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 17:14:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 17:14:12,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-08 17:14:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:12,461 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 17:14:12,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 17:14:12,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 17:14:12,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:14:12,465 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:14:12,465 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:14:12,465 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:14:12,465 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:14:12,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:14:12,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:14:12,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:14:12,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:14:12,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:14:12,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:14:12,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:12,686 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:14:12,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:14:12,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:14:12 BasicIcfg [2021-10-08 17:14:12,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:14:12,690 INFO L168 Benchmark]: Toolchain (without parser) took 23979.09 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 116.3 MB in the beginning and 93.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,691 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:14:12,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.10 ms. Allocated memory is still 161.5 MB. Free memory was 115.8 MB in the beginning and 105.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.86 ms. Allocated memory is still 161.5 MB. Free memory was 105.0 MB in the beginning and 142.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,692 INFO L168 Benchmark]: Boogie Preprocessor took 57.61 ms. Allocated memory is still 161.5 MB. Free memory was 142.7 MB in the beginning and 143.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,692 INFO L168 Benchmark]: RCFGBuilder took 776.96 ms. Allocated memory is still 161.5 MB. Free memory was 143.9 MB in the beginning and 129.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,693 INFO L168 Benchmark]: TraceAbstraction took 22760.66 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 129.2 MB in the beginning and 93.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2021-10-08 17:14:12,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.10 ms. Allocated memory is still 161.5 MB. Free memory was 115.8 MB in the beginning and 105.1 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 59.86 ms. Allocated memory is still 161.5 MB. Free memory was 105.0 MB in the beginning and 142.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.61 ms. Allocated memory is still 161.5 MB. Free memory was 142.7 MB in the beginning and 143.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 776.96 ms. Allocated memory is still 161.5 MB. Free memory was 143.9 MB in the beginning and 129.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22760.66 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 129.2 MB in the beginning and 93.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11590.1ms, 113 PlacesBefore, 47 PlacesAfterwards, 110 TransitionsBefore, 41 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 100 TotalNumberOfCompositions, 2874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1863, positive: 1786, positive conditional: 0, positive unconditional: 1786, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 836, positive: 805, positive conditional: 0, positive unconditional: 805, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 836, positive: 797, positive conditional: 0, positive unconditional: 797, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1863, positive: 981, positive conditional: 0, positive unconditional: 981, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 836, unknown conditional: 0, unknown unconditional: 836] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 127 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 22535.7ms, OverallIterations: 17, TraceHistogramMax: 2, EmptinessCheckTime: 49.1ms, AutomataDifference: 1891.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11708.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 452 SDtfs, 1040 SDslu, 705 SDs, 0 SdLazy, 612 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 948.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 839.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1098occurred in iteration=15, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 361.5ms AutomataMinimizationTime, 17 MinimizatonAttempts, 1258 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 158.5ms SsaConstructionTime, 552.3ms SatisfiabilityAnalysisTime, 3226.3ms InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 420 ConstructedInterpolants, 6 QuantifiedInterpolants, 1369 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 34 InterpolantComputations, 22 PerfectInterpolantSequences, 30/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 17:14:12,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...