/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:35:18,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:35:18,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:35:19,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:35:19,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:35:19,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:35:19,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:35:19,116 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 16:35:19,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:35:19,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:35:19,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:35:19,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:35:19,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:35:19,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:35:19,148 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:35:19,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:35:19,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:35:19,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:35:19,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:35:19,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:35:19,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:35:19,149 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:35:19,150 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:35:19,150 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:35:19,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:35:19,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:35:19,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:35:19,151 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:35:19,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:35:19,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:35:19,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:35:19,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:35:19,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:35:19,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:19,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:35:19,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:35:19,152 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:35:19,153 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:35:19,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:35:19,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:35:19,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:35:19,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:35:19,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:35:19,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:35:19,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:35:19,622 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:35:19,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2021-10-08 16:35:19,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0c1ebf8f/5d81d01511b74ff794c1bf23538a5099/FLAG09713ccd7 [2021-10-08 16:35:20,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:35:20,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2021-10-08 16:35:20,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0c1ebf8f/5d81d01511b74ff794c1bf23538a5099/FLAG09713ccd7 [2021-10-08 16:35:20,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0c1ebf8f/5d81d01511b74ff794c1bf23538a5099 [2021-10-08 16:35:20,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:35:20,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:35:20,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:35:20,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:35:20,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc2ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20, skipping insertion in model container [2021-10-08 16:35:20,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:35:20,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:21,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2619,2632] [2021-10-08 16:35:21,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,203 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:35:21,281 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2619,2632] [2021-10-08 16:35:21,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,319 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:35:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21 WrapperNode [2021-10-08 16:35:21,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:21,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:35:21,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:35:21,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:35:21,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:35:21,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:35:21,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:35:21,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:35:21,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:21,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:35:21,560 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 16:35:21,586 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 16:35:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:35:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:35:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:35:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:35:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:35:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:35:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:35:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 16:35:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 16:35:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-10-08 16:35:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-10-08 16:35:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-10-08 16:35:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-10-08 16:35:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:35:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:35:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:35:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:35:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:35:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:35:21,637 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 16:35:22,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:35:22,448 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-08 16:35:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22 BoogieIcfgContainer [2021-10-08 16:35:22,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:35:22,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:35:22,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:35:22,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:35:22,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:35:20" (1/3) ... [2021-10-08 16:35:22,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ed75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (2/3) ... [2021-10-08 16:35:22,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ed75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22" (3/3) ... [2021-10-08 16:35:22,467 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2021-10-08 16:35:22,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:35:22,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-08 16:35:22,478 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:35:22,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,554 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,554 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,555 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,555 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,555 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,556 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,556 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,556 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,557 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,557 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,558 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,558 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,559 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,559 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,560 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,561 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,561 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,580 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,580 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,585 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,585 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,596 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,614 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,615 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,628 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-10-08 16:35:22,713 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:35:22,722 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 16:35:22,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-08 16:35:22,743 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:35:22,757 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 189 transitions, 426 flow [2021-10-08 16:35:22,761 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 189 transitions, 426 flow [2021-10-08 16:35:22,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 194 places, 189 transitions, 426 flow [2021-10-08 16:35:22,874 INFO L129 PetriNetUnfolder]: 14/183 cut-off events. [2021-10-08 16:35:22,874 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-08 16:35:22,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 183 events. 14/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2021-10-08 16:35:22,887 INFO L116 LiptonReduction]: Number of co-enabled transitions 3780 [2021-10-08 16:36:01,313 INFO L131 LiptonReduction]: Checked pairs total: 5366 [2021-10-08 16:36:01,314 INFO L133 LiptonReduction]: Total number of compositions: 179 [2021-10-08 16:36:01,324 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 69 transitions, 186 flow [2021-10-08 16:36:01,411 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 16:36:01,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:01,425 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 16:36:01,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:01,432 INFO L82 PathProgramCache]: Analyzing trace with hash 685, now seen corresponding path program 1 times [2021-10-08 16:36:01,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:01,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385830703] [2021-10-08 16:36:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:01,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:01,451 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 16:36:01,480 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 16:36:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 16:36:01,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:01,528 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 16:36:01,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:01,529 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 16:36:01,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:01,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385830703] [2021-10-08 16:36:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385830703] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:01,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:01,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 16:36:01,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209139590] [2021-10-08 16:36:01,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 16:36:01,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 16:36:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 16:36:01,564 INFO L87 Difference]: Start difference. First operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 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 16:36:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:01,626 INFO L93 Difference]: Finished difference Result 756 states and 4292 transitions. [2021-10-08 16:36:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 16:36:01,628 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 16:36:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:01,662 INFO L225 Difference]: With dead ends: 756 [2021-10-08 16:36:01,663 INFO L226 Difference]: Without dead ends: 756 [2021-10-08 16:36:01,664 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 16:36:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-08 16:36:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-10-08 16:36:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 733 states have (on average 5.855388813096862) internal successors, (4292), 755 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 4292 transitions. [2021-10-08 16:36:01,824 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 4292 transitions. Word has length 1 [2021-10-08 16:36:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:01,825 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 4292 transitions. [2021-10-08 16:36:01,825 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 16:36:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 4292 transitions. [2021-10-08 16:36:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:36:01,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:01,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:36:01,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:02,038 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 16:36:02,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:02,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:02,040 INFO L82 PathProgramCache]: Analyzing trace with hash 675309, now seen corresponding path program 1 times [2021-10-08 16:36:02,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:02,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758127686] [2021-10-08 16:36:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:02,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:02,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:02,043 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 16:36:02,047 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 16:36:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:02,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:36:02,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:02,484 INFO L354 Elim1Store]: treesize reduction 269, result has 13.2 percent of original size [2021-10-08 16:36:02,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 83 treesize of output 101 [2021-10-08 16:36:03,200 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 16:36:03,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:03,219 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 16:36:03,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:03,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758127686] [2021-10-08 16:36:03,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758127686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:03,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:03,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:03,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248523746] [2021-10-08 16:36:03,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:03,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:03,225 INFO L87 Difference]: Start difference. First operand 756 states and 4292 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 16:36:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:03,526 INFO L93 Difference]: Finished difference Result 722 states and 4096 transitions. [2021-10-08 16:36:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:03,527 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 16:36:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:03,540 INFO L225 Difference]: With dead ends: 722 [2021-10-08 16:36:03,540 INFO L226 Difference]: Without dead ends: 722 [2021-10-08 16:36:03,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-08 16:36:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-10-08 16:36:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 701 states have (on average 5.843081312410842) internal successors, (4096), 721 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 4096 transitions. [2021-10-08 16:36:03,587 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 4096 transitions. Word has length 3 [2021-10-08 16:36:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:03,588 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 4096 transitions. [2021-10-08 16:36:03,588 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 16:36:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 4096 transitions. [2021-10-08 16:36:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:36:03,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:03,589 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:36:03,604 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 16:36:03,803 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 16:36:03,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:03,807 INFO L82 PathProgramCache]: Analyzing trace with hash 675307, now seen corresponding path program 1 times [2021-10-08 16:36:03,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:03,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912787211] [2021-10-08 16:36:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:03,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:03,810 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 16:36:03,812 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 16:36:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:03,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:36:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:04,539 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:04,540 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 7 case distinctions, treesize of input 80 treesize of output 134 [2021-10-08 16:36:04,567 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-08 16:36:04,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 137 [2021-10-08 16:36:05,466 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 16:36:05,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:05,521 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 16:36:05,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:05,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912787211] [2021-10-08 16:36:05,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912787211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:05,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:05,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:05,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203680147] [2021-10-08 16:36:05,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:05,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:05,525 INFO L87 Difference]: Start difference. First operand 722 states and 4096 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 16:36:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:05,846 INFO L93 Difference]: Finished difference Result 688 states and 3900 transitions. [2021-10-08 16:36:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:05,849 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 16:36:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:05,858 INFO L225 Difference]: With dead ends: 688 [2021-10-08 16:36:05,858 INFO L226 Difference]: Without dead ends: 688 [2021-10-08 16:36:05,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-10-08 16:36:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2021-10-08 16:36:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 5.829596412556054) internal successors, (3900), 687 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 3900 transitions. [2021-10-08 16:36:05,897 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 3900 transitions. Word has length 3 [2021-10-08 16:36:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:05,898 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 3900 transitions. [2021-10-08 16:36:05,898 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 16:36:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 3900 transitions. [2021-10-08 16:36:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:36:05,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:05,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:36:05,913 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 16:36:06,111 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 16:36:06,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:06,113 INFO L82 PathProgramCache]: Analyzing trace with hash 648985899, now seen corresponding path program 1 times [2021-10-08 16:36:06,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:06,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859212465] [2021-10-08 16:36:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:06,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:06,116 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 16:36:06,117 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 16:36:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:06,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:36:06,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:06,377 INFO L354 Elim1Store]: treesize reduction 253, result has 13.9 percent of original size [2021-10-08 16:36:06,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 86 [2021-10-08 16:36:07,204 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 16:36:07,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:07,228 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 16:36:07,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:07,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859212465] [2021-10-08 16:36:07,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859212465] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:07,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:07,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:07,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982394360] [2021-10-08 16:36:07,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:07,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:07,232 INFO L87 Difference]: Start difference. First operand 688 states and 3900 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 16:36:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:07,476 INFO L93 Difference]: Finished difference Result 668 states and 3808 transitions. [2021-10-08 16:36:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:07,477 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 16:36:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:07,487 INFO L225 Difference]: With dead ends: 668 [2021-10-08 16:36:07,488 INFO L226 Difference]: Without dead ends: 668 [2021-10-08 16:36:07,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-08 16:36:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2021-10-08 16:36:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 651 states have (on average 5.849462365591398) internal successors, (3808), 667 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 3808 transitions. [2021-10-08 16:36:07,528 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 3808 transitions. Word has length 5 [2021-10-08 16:36:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:07,528 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 3808 transitions. [2021-10-08 16:36:07,529 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 16:36:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 3808 transitions. [2021-10-08 16:36:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:36:07,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:07,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:36:07,543 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 16:36:07,742 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 16:36:07,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash 648985900, now seen corresponding path program 1 times [2021-10-08 16:36:07,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:07,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123728061] [2021-10-08 16:36:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:07,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:07,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:07,746 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 16:36:07,754 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 16:36:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:07,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:36:07,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:08,425 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:08,426 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 7 case distinctions, treesize of input 65 treesize of output 119 [2021-10-08 16:36:08,440 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 16:36:08,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 122 [2021-10-08 16:36:09,481 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 16:36:09,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:09,575 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 16:36:09,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:09,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123728061] [2021-10-08 16:36:09,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123728061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:09,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:09,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:09,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347401220] [2021-10-08 16:36:09,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:09,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:09,578 INFO L87 Difference]: Start difference. First operand 668 states and 3808 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 16:36:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:09,896 INFO L93 Difference]: Finished difference Result 648 states and 3716 transitions. [2021-10-08 16:36:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:09,898 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 16:36:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:09,909 INFO L225 Difference]: With dead ends: 648 [2021-10-08 16:36:09,909 INFO L226 Difference]: Without dead ends: 648 [2021-10-08 16:36:09,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-10-08 16:36:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2021-10-08 16:36:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 633 states have (on average 5.8704581358609795) internal successors, (3716), 647 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 3716 transitions. [2021-10-08 16:36:09,947 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 3716 transitions. Word has length 5 [2021-10-08 16:36:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:09,948 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 3716 transitions. [2021-10-08 16:36:09,948 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 16:36:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 3716 transitions. [2021-10-08 16:36:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:36:09,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:09,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:09,963 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 16:36:10,162 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 16:36:10,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash 905208110, now seen corresponding path program 1 times [2021-10-08 16:36:10,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:10,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481122763] [2021-10-08 16:36:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:10,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:10,167 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 16:36:10,203 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 16:36:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:10,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:36:10,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:10,411 INFO L354 Elim1Store]: treesize reduction 245, result has 14.3 percent of original size [2021-10-08 16:36:10,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-10-08 16:36:11,171 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 16:36:11,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:11,203 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 16:36:11,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:11,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481122763] [2021-10-08 16:36:11,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481122763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:11,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:11,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122501214] [2021-10-08 16:36:11,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:11,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:11,206 INFO L87 Difference]: Start difference. First operand 648 states and 3716 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 16:36:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:11,326 INFO L93 Difference]: Finished difference Result 632 states and 3652 transitions. [2021-10-08 16:36:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:11,326 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 16:36:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:11,336 INFO L225 Difference]: With dead ends: 632 [2021-10-08 16:36:11,336 INFO L226 Difference]: Without dead ends: 632 [2021-10-08 16:36:11,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-08 16:36:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-10-08 16:36:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 619 states have (on average 5.89983844911147) internal successors, (3652), 631 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 3652 transitions. [2021-10-08 16:36:11,378 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 3652 transitions. Word has length 7 [2021-10-08 16:36:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:11,378 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 3652 transitions. [2021-10-08 16:36:11,378 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 16:36:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 3652 transitions. [2021-10-08 16:36:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:36:11,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:11,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:11,400 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 16:36:11,600 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 16:36:11,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash 905208112, now seen corresponding path program 1 times [2021-10-08 16:36:11,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:11,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503113693] [2021-10-08 16:36:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:11,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:11,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:11,606 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 16:36:11,608 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 16:36:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:11,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:36:11,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:12,127 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:12,127 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 7 case distinctions, treesize of input 47 treesize of output 101 [2021-10-08 16:36:12,138 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 105 treesize of output 103 [2021-10-08 16:36:13,185 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 16:36:13,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:13,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:13,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503113693] [2021-10-08 16:36:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503113693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:13,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:13,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:13,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265765755] [2021-10-08 16:36:13,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:13,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:13,294 INFO L87 Difference]: Start difference. First operand 632 states and 3652 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 16:36:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:13,406 INFO L93 Difference]: Finished difference Result 616 states and 3588 transitions. [2021-10-08 16:36:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:13,408 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 16:36:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:13,417 INFO L225 Difference]: With dead ends: 616 [2021-10-08 16:36:13,417 INFO L226 Difference]: Without dead ends: 616 [2021-10-08 16:36:13,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-08 16:36:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-10-08 16:36:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 605 states have (on average 5.9305785123966945) internal successors, (3588), 615 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 3588 transitions. [2021-10-08 16:36:13,454 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 3588 transitions. Word has length 7 [2021-10-08 16:36:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:13,454 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 3588 transitions. [2021-10-08 16:36:13,454 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 16:36:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 3588 transitions. [2021-10-08 16:36:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:36:13,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:13,457 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:13,471 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 16:36:13,670 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 16:36:13,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1973351447, now seen corresponding path program 1 times [2021-10-08 16:36:13,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:13,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831267948] [2021-10-08 16:36:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:13,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:13,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:13,675 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 16:36:13,675 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 16:36:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:13,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:36:13,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:13,923 INFO L354 Elim1Store]: treesize reduction 245, result has 14.3 percent of original size [2021-10-08 16:36:13,924 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 5 case distinctions, treesize of input 21 treesize of output 46 [2021-10-08 16:36:13,991 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 16:36:13,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:14,017 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 16:36:14,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:14,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831267948] [2021-10-08 16:36:14,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831267948] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:14,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:14,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:36:14,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704752808] [2021-10-08 16:36:14,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:36:14,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:36:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:14,020 INFO L87 Difference]: Start difference. First operand 616 states and 3588 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:14,106 INFO L93 Difference]: Finished difference Result 596 states and 3496 transitions. [2021-10-08 16:36:14,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:14,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:36:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:14,115 INFO L225 Difference]: With dead ends: 596 [2021-10-08 16:36:14,116 INFO L226 Difference]: Without dead ends: 596 [2021-10-08 16:36:14,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-08 16:36:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-10-08 16:36:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 5.955706984667803) internal successors, (3496), 595 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 3496 transitions. [2021-10-08 16:36:14,148 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 3496 transitions. Word has length 9 [2021-10-08 16:36:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:14,148 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 3496 transitions. [2021-10-08 16:36:14,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 3496 transitions. [2021-10-08 16:36:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:36:14,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:14,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:14,166 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 16:36:14,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:14,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1973351446, now seen corresponding path program 1 times [2021-10-08 16:36:14,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:14,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029341282] [2021-10-08 16:36:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:14,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:14,369 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 16:36:14,370 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 16:36:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:14,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:36:14,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:14,981 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:14,982 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 7 case distinctions, treesize of input 27 treesize of output 82 [2021-10-08 16:36:15,136 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 16:36:15,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:15,236 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 16:36:15,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:15,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029341282] [2021-10-08 16:36:15,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029341282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:15,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:15,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:15,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591002630] [2021-10-08 16:36:15,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:15,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:15,239 INFO L87 Difference]: Start difference. First operand 596 states and 3496 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:15,311 INFO L93 Difference]: Finished difference Result 576 states and 3404 transitions. [2021-10-08 16:36:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:15,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:36:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:15,320 INFO L225 Difference]: With dead ends: 576 [2021-10-08 16:36:15,320 INFO L226 Difference]: Without dead ends: 576 [2021-10-08 16:36:15,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-08 16:36:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-10-08 16:36:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 569 states have (on average 5.982425307557118) internal successors, (3404), 575 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 3404 transitions. [2021-10-08 16:36:15,349 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 3404 transitions. Word has length 9 [2021-10-08 16:36:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 3404 transitions. [2021-10-08 16:36:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 3404 transitions. [2021-10-08 16:36:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:36:15,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:15,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:15,366 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 16:36:15,564 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 16:36:15,564 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:15,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1984821414, now seen corresponding path program 1 times [2021-10-08 16:36:15,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:15,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765840775] [2021-10-08 16:36:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:15,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:15,568 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 16:36:15,574 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 16:36:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:15,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:36:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:15,827 INFO L354 Elim1Store]: treesize reduction 245, result has 14.3 percent of original size [2021-10-08 16:36:15,827 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 5 case distinctions, treesize of input 21 treesize of output 46 [2021-10-08 16:36:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:15,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:15,935 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 16:36:15,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:15,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765840775] [2021-10-08 16:36:15,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765840775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:15,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:15,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:36:15,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686411347] [2021-10-08 16:36:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:36:15,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:36:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:15,939 INFO L87 Difference]: Start difference. First operand 576 states and 3404 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:15,993 INFO L93 Difference]: Finished difference Result 542 states and 3208 transitions. [2021-10-08 16:36:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:36:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:16,004 INFO L225 Difference]: With dead ends: 542 [2021-10-08 16:36:16,004 INFO L226 Difference]: Without dead ends: 542 [2021-10-08 16:36:16,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-08 16:36:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-10-08 16:36:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 537 states have (on average 5.973929236499069) internal successors, (3208), 541 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 3208 transitions. [2021-10-08 16:36:16,030 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 3208 transitions. Word has length 11 [2021-10-08 16:36:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 3208 transitions. [2021-10-08 16:36:16,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 3208 transitions. [2021-10-08 16:36:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:36:16,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:16,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:16,045 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 16:36:16,246 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 16:36:16,246 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1984821416, now seen corresponding path program 1 times [2021-10-08 16:36:16,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:16,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31352250] [2021-10-08 16:36:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:16,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:16,249 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 16:36:16,250 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 16:36:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:16,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:36:16,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:16,757 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:16,758 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 7 case distinctions, treesize of input 27 treesize of output 82 [2021-10-08 16:36:16,910 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 16:36:16,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:17,026 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 16:36:17,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:17,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31352250] [2021-10-08 16:36:17,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31352250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:17,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:17,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:17,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051135712] [2021-10-08 16:36:17,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:17,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:17,029 INFO L87 Difference]: Start difference. First operand 542 states and 3208 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:17,075 INFO L93 Difference]: Finished difference Result 508 states and 3012 transitions. [2021-10-08 16:36:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:36:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:17,083 INFO L225 Difference]: With dead ends: 508 [2021-10-08 16:36:17,083 INFO L226 Difference]: Without dead ends: 508 [2021-10-08 16:36:17,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-08 16:36:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-10-08 16:36:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 5.964356435643564) internal successors, (3012), 507 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 3012 transitions. [2021-10-08 16:36:17,109 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 3012 transitions. Word has length 11 [2021-10-08 16:36:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:17,109 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 3012 transitions. [2021-10-08 16:36:17,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 3012 transitions. [2021-10-08 16:36:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:36:17,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:17,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:17,124 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 16:36:17,324 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 16:36:17,325 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash 447915403, now seen corresponding path program 1 times [2021-10-08 16:36:17,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:17,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528412405] [2021-10-08 16:36:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:17,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:17,329 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 16:36:17,330 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 16:36:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:17,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:36:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:17,882 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-08 16:36:17,883 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 7 case distinctions, treesize of input 37 treesize of output 91 [2021-10-08 16:36:17,889 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 92 treesize of output 90 [2021-10-08 16:36:18,320 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 16:36:18,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:18,580 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 16:36:18,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:18,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528412405] [2021-10-08 16:36:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528412405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:18,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:18,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:36:18,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891712458] [2021-10-08 16:36:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:18,582 INFO L87 Difference]: Start difference. First operand 508 states and 3012 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:18,665 INFO L93 Difference]: Finished difference Result 444 states and 2564 transitions. [2021-10-08 16:36:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 13 [2021-10-08 16:36:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:18,672 INFO L225 Difference]: With dead ends: 444 [2021-10-08 16:36:18,672 INFO L226 Difference]: Without dead ends: 444 [2021-10-08 16:36:18,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-08 16:36:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-10-08 16:36:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 5.800904977375565) internal successors, (2564), 443 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 2564 transitions. [2021-10-08 16:36:18,693 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 2564 transitions. Word has length 13 [2021-10-08 16:36:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 2564 transitions. [2021-10-08 16:36:18,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 2564 transitions. [2021-10-08 16:36:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:36:18,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:18,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:18,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:18,908 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 16:36:18,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:18,909 INFO L82 PathProgramCache]: Analyzing trace with hash 447915404, now seen corresponding path program 1 times [2021-10-08 16:36:18,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:18,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610984003] [2021-10-08 16:36:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:18,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:18,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:18,912 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 16:36:18,913 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 16:36:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:19,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:36:19,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:19,231 INFO L354 Elim1Store]: treesize reduction 245, result has 14.3 percent of original size [2021-10-08 16:36:19,232 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 5 case distinctions, treesize of input 21 treesize of output 46 [2021-10-08 16:36:19,524 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 16:36:19,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:19,766 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 16:36:19,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:19,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610984003] [2021-10-08 16:36:19,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610984003] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:19,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:19,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-08 16:36:19,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783707182] [2021-10-08 16:36:19,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:19,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:19,769 INFO L87 Difference]: Start difference. First operand 444 states and 2564 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:19,891 INFO L93 Difference]: Finished difference Result 380 states and 2116 transitions. [2021-10-08 16:36:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:19,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:36:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:19,897 INFO L225 Difference]: With dead ends: 380 [2021-10-08 16:36:19,898 INFO L226 Difference]: Without dead ends: 380 [2021-10-08 16:36:19,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.8ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-08 16:36:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-10-08 16:36:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 5.58311345646438) internal successors, (2116), 379 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 2116 transitions. [2021-10-08 16:36:19,915 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 2116 transitions. Word has length 13 [2021-10-08 16:36:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:19,915 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 2116 transitions. [2021-10-08 16:36:19,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 2116 transitions. [2021-10-08 16:36:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:36:19,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:19,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:19,936 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 16:36:20,131 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 16:36:20,132 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:20,133 INFO L82 PathProgramCache]: Analyzing trace with hash 40296099, now seen corresponding path program 1 times [2021-10-08 16:36:20,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:20,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889382288] [2021-10-08 16:36:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:20,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:20,137 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 16:36:20,145 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 16:36:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:20,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:36:20,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:21,157 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 16:36:21,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:21,522 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 16:36:21,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:21,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889382288] [2021-10-08 16:36:21,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889382288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:21,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:21,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:21,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151605062] [2021-10-08 16:36:21,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:21,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:21,525 INFO L87 Difference]: Start difference. First operand 380 states and 2116 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:21,593 INFO L93 Difference]: Finished difference Result 757 states and 4229 transitions. [2021-10-08 16:36:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 31 [2021-10-08 16:36:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:21,604 INFO L225 Difference]: With dead ends: 757 [2021-10-08 16:36:21,604 INFO L226 Difference]: Without dead ends: 744 [2021-10-08 16:36:21,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-08 16:36:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2021-10-08 16:36:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 5.619111709286676) internal successors, (4175), 743 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 4175 transitions. [2021-10-08 16:36:21,643 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 4175 transitions. Word has length 31 [2021-10-08 16:36:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:21,644 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 4175 transitions. [2021-10-08 16:36:21,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 4175 transitions. [2021-10-08 16:36:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:21,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:21,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:21,662 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 16:36:21,861 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 16:36:21,862 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash 68639436, now seen corresponding path program 1 times [2021-10-08 16:36:21,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:21,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882506059] [2021-10-08 16:36:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:21,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:21,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:21,866 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 16:36:21,871 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 16:36:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:22,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:22,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:22,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:22,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882506059] [2021-10-08 16:36:22,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882506059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:22,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:22,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:36:22,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039873858] [2021-10-08 16:36:22,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:22,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:22,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:22,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:22,431 INFO L87 Difference]: Start difference. First operand 744 states and 4175 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:22,845 INFO L93 Difference]: Finished difference Result 2614 states and 14385 transitions. [2021-10-08 16:36:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:22,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:22,895 INFO L225 Difference]: With dead ends: 2614 [2021-10-08 16:36:22,895 INFO L226 Difference]: Without dead ends: 2614 [2021-10-08 16:36:22,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 151.3ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-10-08 16:36:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1144. [2021-10-08 16:36:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 6.111986001749782) internal successors, (6986), 1143 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 6986 transitions. [2021-10-08 16:36:22,995 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 6986 transitions. Word has length 32 [2021-10-08 16:36:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:22,996 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 6986 transitions. [2021-10-08 16:36:22,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 6986 transitions. [2021-10-08 16:36:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:23,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:23,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:23,019 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 16:36:23,217 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 16:36:23,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash -27679950, now seen corresponding path program 1 times [2021-10-08 16:36:23,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:23,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112290819] [2021-10-08 16:36:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:23,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:23,222 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 16:36:23,260 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 16:36:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:23,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:36:23,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:23,576 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 16:36:23,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:23,659 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 16:36:23,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:23,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112290819] [2021-10-08 16:36:23,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112290819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:23,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:23,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:36:23,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097710968] [2021-10-08 16:36:23,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:23,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:23,663 INFO L87 Difference]: Start difference. First operand 1144 states and 6986 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:23,934 INFO L93 Difference]: Finished difference Result 1672 states and 9313 transitions. [2021-10-08 16:36:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:36:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 32 [2021-10-08 16:36:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:23,948 INFO L225 Difference]: With dead ends: 1672 [2021-10-08 16:36:23,948 INFO L226 Difference]: Without dead ends: 1666 [2021-10-08 16:36:23,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:36:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-10-08 16:36:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1294. [2021-10-08 16:36:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 5.875483372003093) internal successors, (7597), 1293 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 7597 transitions. [2021-10-08 16:36:24,019 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 7597 transitions. Word has length 32 [2021-10-08 16:36:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:24,019 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 7597 transitions. [2021-10-08 16:36:24,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 7597 transitions. [2021-10-08 16:36:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:24,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:24,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:24,045 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 16:36:24,245 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 16:36:24,246 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2018767441, now seen corresponding path program 1 times [2021-10-08 16:36:24,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:24,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888812897] [2021-10-08 16:36:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:24,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:24,249 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 16:36:24,250 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 16:36:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:24,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:24,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:24,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:24,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:24,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888812897] [2021-10-08 16:36:24,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888812897] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:24,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:24,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:36:24,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554029240] [2021-10-08 16:36:24,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:24,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:24,872 INFO L87 Difference]: Start difference. First operand 1294 states and 7597 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:25,397 INFO L93 Difference]: Finished difference Result 5676 states and 34223 transitions. [2021-10-08 16:36:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:25,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:25,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:25,449 INFO L225 Difference]: With dead ends: 5676 [2021-10-08 16:36:25,449 INFO L226 Difference]: Without dead ends: 5676 [2021-10-08 16:36:25,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-10-08 16:36:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 2590. [2021-10-08 16:36:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 6.6859791425260715) internal successors, (17310), 2589 states have internal predecessors, (17310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 17310 transitions. [2021-10-08 16:36:25,735 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 17310 transitions. Word has length 32 [2021-10-08 16:36:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:25,736 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 17310 transitions. [2021-10-08 16:36:25,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 17310 transitions. [2021-10-08 16:36:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:25,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:25,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:25,776 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 16:36:25,968 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 16:36:25,968 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash 686420959, now seen corresponding path program 1 times [2021-10-08 16:36:25,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:25,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875156622] [2021-10-08 16:36:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:25,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:25,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:25,974 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:25,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 16:36:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:26,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:36:26,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:26,497 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 16:36:26,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:26,615 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 16:36:26,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:26,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875156622] [2021-10-08 16:36:26,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875156622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:26,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:26,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:36:26,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2637591] [2021-10-08 16:36:26,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:26,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:26,617 INFO L87 Difference]: Start difference. First operand 2590 states and 17310 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:26,934 INFO L93 Difference]: Finished difference Result 5822 states and 39748 transitions. [2021-10-08 16:36:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:36:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:26,986 INFO L225 Difference]: With dead ends: 5822 [2021-10-08 16:36:26,987 INFO L226 Difference]: Without dead ends: 5822 [2021-10-08 16:36:26,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:36:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2021-10-08 16:36:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 4072. [2021-10-08 16:36:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 4071 states have (on average 7.055268975681651) internal successors, (28722), 4071 states have internal predecessors, (28722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 28722 transitions. [2021-10-08 16:36:27,459 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 28722 transitions. Word has length 32 [2021-10-08 16:36:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 4072 states and 28722 transitions. [2021-10-08 16:36:27,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 28722 transitions. [2021-10-08 16:36:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:27,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:27,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:27,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:27,704 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 545824974, now seen corresponding path program 1 times [2021-10-08 16:36:27,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:27,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627832826] [2021-10-08 16:36:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:27,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:27,708 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:27,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 16:36:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:28,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:28,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:28,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:28,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:28,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627832826] [2021-10-08 16:36:28,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627832826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:28,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:28,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:36:28,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855711210] [2021-10-08 16:36:28,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:28,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:28,594 INFO L87 Difference]: Start difference. First operand 4072 states and 28722 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:29,290 INFO L93 Difference]: Finished difference Result 11908 states and 82754 transitions. [2021-10-08 16:36:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 32 [2021-10-08 16:36:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:29,603 INFO L225 Difference]: With dead ends: 11908 [2021-10-08 16:36:29,605 INFO L226 Difference]: Without dead ends: 11908 [2021-10-08 16:36:29,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11908 states. [2021-10-08 16:36:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11908 to 5796. [2021-10-08 16:36:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 7.414495254529767) internal successors, (42967), 5795 states have internal predecessors, (42967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 42967 transitions. [2021-10-08 16:36:30,654 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 42967 transitions. Word has length 32 [2021-10-08 16:36:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:30,656 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 42967 transitions. [2021-10-08 16:36:30,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 42967 transitions. [2021-10-08 16:36:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:30,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:30,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:30,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:30,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:30,932 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1507107543, now seen corresponding path program 2 times [2021-10-08 16:36:31,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:31,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819758058] [2021-10-08 16:36:31,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:31,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:31,020 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:31,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 16:36:31,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:31,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:31,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:36:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:31,629 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 16:36:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:31,738 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 16:36:31,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:31,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819758058] [2021-10-08 16:36:31,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819758058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:31,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:31,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:36:31,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785981660] [2021-10-08 16:36:31,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:31,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:31,740 INFO L87 Difference]: Start difference. First operand 5796 states and 42967 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:32,088 INFO L93 Difference]: Finished difference Result 8140 states and 56757 transitions. [2021-10-08 16:36:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:36:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:32,178 INFO L225 Difference]: With dead ends: 8140 [2021-10-08 16:36:32,178 INFO L226 Difference]: Without dead ends: 8100 [2021-10-08 16:36:32,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:36:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-10-08 16:36:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6444. [2021-10-08 16:36:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6444 states, 6443 states have (on average 7.2731646748409124) internal successors, (46861), 6443 states have internal predecessors, (46861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 46861 transitions. [2021-10-08 16:36:32,701 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 46861 transitions. Word has length 32 [2021-10-08 16:36:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:32,702 INFO L470 AbstractCegarLoop]: Abstraction has 6444 states and 46861 transitions. [2021-10-08 16:36:32,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 46861 transitions. [2021-10-08 16:36:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:32,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:32,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:32,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:32,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:32,953 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1979610523, now seen corresponding path program 1 times [2021-10-08 16:36:32,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:32,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844706768] [2021-10-08 16:36:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:32,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:32,957 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:32,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 16:36:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:33,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:33,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:33,449 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 16:36:33,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:33,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:33,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844706768] [2021-10-08 16:36:33,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844706768] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:36:33,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:36:33,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 16:36:33,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120174472] [2021-10-08 16:36:33,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:33,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:36:33,899 INFO L87 Difference]: Start difference. First operand 6444 states and 46861 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:34,110 INFO L93 Difference]: Finished difference Result 8248 states and 56333 transitions. [2021-10-08 16:36:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:36:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:34,253 INFO L225 Difference]: With dead ends: 8248 [2021-10-08 16:36:34,253 INFO L226 Difference]: Without dead ends: 8158 [2021-10-08 16:36:34,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2021-10-08 16:36:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 7538. [2021-10-08 16:36:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7538 states, 7537 states have (on average 7.0439166777232325) internal successors, (53090), 7537 states have internal predecessors, (53090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 53090 transitions. [2021-10-08 16:36:34,781 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 53090 transitions. Word has length 32 [2021-10-08 16:36:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:34,783 INFO L470 AbstractCegarLoop]: Abstraction has 7538 states and 53090 transitions. [2021-10-08 16:36:34,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 53090 transitions. [2021-10-08 16:36:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:34,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:34,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:34,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 16:36:35,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:35,052 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1278377847, now seen corresponding path program 2 times [2021-10-08 16:36:35,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:35,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950780438] [2021-10-08 16:36:35,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:35,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:35,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:35,056 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:35,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 16:36:35,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:35,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:35,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:36,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950780438] [2021-10-08 16:36:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950780438] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:36,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:36,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:36:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635849468] [2021-10-08 16:36:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:36,251 INFO L87 Difference]: Start difference. First operand 7538 states and 53090 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:37,170 INFO L93 Difference]: Finished difference Result 17446 states and 116270 transitions. [2021-10-08 16:36:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:37,309 INFO L225 Difference]: With dead ends: 17446 [2021-10-08 16:36:37,309 INFO L226 Difference]: Without dead ends: 17446 [2021-10-08 16:36:37,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17446 states. [2021-10-08 16:36:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17446 to 10518. [2021-10-08 16:36:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10518 states, 10517 states have (on average 7.257773129219359) internal successors, (76330), 10517 states have internal predecessors, (76330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 76330 transitions. [2021-10-08 16:36:38,247 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 76330 transitions. Word has length 32 [2021-10-08 16:36:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:38,249 INFO L470 AbstractCegarLoop]: Abstraction has 10518 states and 76330 transitions. [2021-10-08 16:36:38,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 76330 transitions. [2021-10-08 16:36:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:36:38,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:38,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:38,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:38,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:38,543 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:38,544 INFO L82 PathProgramCache]: Analyzing trace with hash -606674130, now seen corresponding path program 2 times [2021-10-08 16:36:38,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:38,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097591783] [2021-10-08 16:36:38,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:38,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:38,547 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:38,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 16:36:38,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:38,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:39,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:39,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:39,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:39,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097591783] [2021-10-08 16:36:39,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097591783] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:39,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:39,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:36:39,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612114099] [2021-10-08 16:36:39,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:39,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:39,434 INFO L87 Difference]: Start difference. First operand 10518 states and 76330 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:40,348 INFO L93 Difference]: Finished difference Result 26884 states and 183800 transitions. [2021-10-08 16:36:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:36:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:40,749 INFO L225 Difference]: With dead ends: 26884 [2021-10-08 16:36:40,750 INFO L226 Difference]: Without dead ends: 26884 [2021-10-08 16:36:40,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26884 states. [2021-10-08 16:36:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26884 to 13808. [2021-10-08 16:36:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 13807 states have (on average 7.460708336351126) internal successors, (103010), 13807 states have internal predecessors, (103010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 103010 transitions. [2021-10-08 16:36:42,136 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 103010 transitions. Word has length 32 [2021-10-08 16:36:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:42,136 INFO L470 AbstractCegarLoop]: Abstraction has 13808 states and 103010 transitions. [2021-10-08 16:36:42,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 103010 transitions. [2021-10-08 16:36:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:36:42,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:42,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:42,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:42,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:42,423 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:42,424 INFO L82 PathProgramCache]: Analyzing trace with hash 850963497, now seen corresponding path program 1 times [2021-10-08 16:36:42,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:42,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4680315] [2021-10-08 16:36:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:42,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:42,426 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:42,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 16:36:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:42,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:42,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:44,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:44,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:44,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4680315] [2021-10-08 16:36:44,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4680315] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:44,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:44,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:44,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94357412] [2021-10-08 16:36:44,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:44,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:44,478 INFO L87 Difference]: Start difference. First operand 13808 states and 103010 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:45,110 INFO L93 Difference]: Finished difference Result 15116 states and 109183 transitions. [2021-10-08 16:36:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:36:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:45,215 INFO L225 Difference]: With dead ends: 15116 [2021-10-08 16:36:45,215 INFO L226 Difference]: Without dead ends: 14950 [2021-10-08 16:36:45,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14950 states. [2021-10-08 16:36:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14950 to 14272. [2021-10-08 16:36:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 7.410622941629879) internal successors, (105757), 14271 states have internal predecessors, (105757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 105757 transitions. [2021-10-08 16:36:46,071 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 105757 transitions. Word has length 33 [2021-10-08 16:36:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:46,071 INFO L470 AbstractCegarLoop]: Abstraction has 14272 states and 105757 transitions. [2021-10-08 16:36:46,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 105757 transitions. [2021-10-08 16:36:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:36:46,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:46,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:46,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:46,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:46,577 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1721817073, now seen corresponding path program 1 times [2021-10-08 16:36:46,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:46,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551270930] [2021-10-08 16:36:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:46,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:46,580 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:46,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 16:36:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:46,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:46,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:47,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:48,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:48,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551270930] [2021-10-08 16:36:48,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551270930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:48,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:48,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:48,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591203252] [2021-10-08 16:36:48,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:48,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:48,336 INFO L87 Difference]: Start difference. First operand 14272 states and 105757 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:48,976 INFO L93 Difference]: Finished difference Result 15612 states and 112115 transitions. [2021-10-08 16:36:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:36:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:49,072 INFO L225 Difference]: With dead ends: 15612 [2021-10-08 16:36:49,072 INFO L226 Difference]: Without dead ends: 15494 [2021-10-08 16:36:49,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15494 states. [2021-10-08 16:36:49,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15494 to 14858. [2021-10-08 16:36:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14858 states, 14857 states have (on average 7.347647573534361) internal successors, (109164), 14857 states have internal predecessors, (109164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14858 states to 14858 states and 109164 transitions. [2021-10-08 16:36:49,710 INFO L78 Accepts]: Start accepts. Automaton has 14858 states and 109164 transitions. Word has length 33 [2021-10-08 16:36:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:49,711 INFO L470 AbstractCegarLoop]: Abstraction has 14858 states and 109164 transitions. [2021-10-08 16:36:49,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14858 states and 109164 transitions. [2021-10-08 16:36:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:36:50,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:50,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:50,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:50,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:50,293 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash -899140846, now seen corresponding path program 1 times [2021-10-08 16:36:50,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:50,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331621833] [2021-10-08 16:36:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:50,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:50,296 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:50,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 16:36:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:50,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:51,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:52,205 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 16:36:52,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:52,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331621833] [2021-10-08 16:36:52,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331621833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:52,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:52,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:52,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285733988] [2021-10-08 16:36:52,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:52,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:52,207 INFO L87 Difference]: Start difference. First operand 14858 states and 109164 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:53,146 INFO L93 Difference]: Finished difference Result 15860 states and 114037 transitions. [2021-10-08 16:36:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:36:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:53,240 INFO L225 Difference]: With dead ends: 15860 [2021-10-08 16:36:53,240 INFO L226 Difference]: Without dead ends: 15770 [2021-10-08 16:36:53,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15770 states. [2021-10-08 16:36:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15770 to 15340. [2021-10-08 16:36:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 15339 states have (on average 7.289262663798161) internal successors, (111810), 15339 states have internal predecessors, (111810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 111810 transitions. [2021-10-08 16:36:53,950 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 111810 transitions. Word has length 33 [2021-10-08 16:36:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:53,951 INFO L470 AbstractCegarLoop]: Abstraction has 15340 states and 111810 transitions. [2021-10-08 16:36:53,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 111810 transitions. [2021-10-08 16:36:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:36:54,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:54,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:54,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:54,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:54,212 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1064147448, now seen corresponding path program 2 times [2021-10-08 16:36:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:54,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632807871] [2021-10-08 16:36:54,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:54,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:54,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:54,215 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:54,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 16:36:54,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:54,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:54,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:54,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:56,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:56,549 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 16:36:56,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:56,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632807871] [2021-10-08 16:36:56,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632807871] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:56,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:56,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:56,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945117955] [2021-10-08 16:36:56,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:56,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:56,552 INFO L87 Difference]: Start difference. First operand 15340 states and 111810 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:57,278 INFO L93 Difference]: Finished difference Result 16276 states and 116313 transitions. [2021-10-08 16:36:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:57,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:36:57,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:57,387 INFO L225 Difference]: With dead ends: 16276 [2021-10-08 16:36:57,387 INFO L226 Difference]: Without dead ends: 16186 [2021-10-08 16:36:57,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 149.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16186 states. [2021-10-08 16:36:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16186 to 15702. [2021-10-08 16:36:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15702 states, 15701 states have (on average 7.25501560410165) internal successors, (113911), 15701 states have internal predecessors, (113911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15702 states to 15702 states and 113911 transitions. [2021-10-08 16:36:58,236 INFO L78 Accepts]: Start accepts. Automaton has 15702 states and 113911 transitions. Word has length 33 [2021-10-08 16:36:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:58,237 INFO L470 AbstractCegarLoop]: Abstraction has 15702 states and 113911 transitions. [2021-10-08 16:36:58,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 15702 states and 113911 transitions. [2021-10-08 16:36:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:36:58,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:58,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:58,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:58,532 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:36:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:58,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1122383815, now seen corresponding path program 2 times [2021-10-08 16:36:58,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:58,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918021332] [2021-10-08 16:36:58,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:58,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:58,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:58,536 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:58,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 16:36:59,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:59,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:59,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:59,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:00,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:00,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:00,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918021332] [2021-10-08 16:37:00,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918021332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:00,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:00,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:37:00,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026119317] [2021-10-08 16:37:00,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:00,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:00,574 INFO L87 Difference]: Start difference. First operand 15702 states and 113911 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:01,473 INFO L93 Difference]: Finished difference Result 16944 states and 119922 transitions. [2021-10-08 16:37:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:37:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:37:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:01,572 INFO L225 Difference]: With dead ends: 16944 [2021-10-08 16:37:01,572 INFO L226 Difference]: Without dead ends: 16826 [2021-10-08 16:37:01,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16826 states. [2021-10-08 16:37:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16826 to 16136. [2021-10-08 16:37:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16135 states have (on average 7.219584753641152) internal successors, (116488), 16135 states have internal predecessors, (116488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 116488 transitions. [2021-10-08 16:37:02,566 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 116488 transitions. Word has length 33 [2021-10-08 16:37:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:02,567 INFO L470 AbstractCegarLoop]: Abstraction has 16136 states and 116488 transitions. [2021-10-08 16:37:02,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 116488 transitions. [2021-10-08 16:37:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:37:02,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:02,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:02,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:02,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:02,857 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:37:02,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:02,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1784402153, now seen corresponding path program 2 times [2021-10-08 16:37:02,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:02,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64174258] [2021-10-08 16:37:02,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:02,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:02,861 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:02,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 16:37:03,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:03,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:37:03,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:04,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:05,113 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 16:37:05,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:05,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64174258] [2021-10-08 16:37:05,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64174258] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:05,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:05,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:37:05,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132738267] [2021-10-08 16:37:05,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:05,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:05,116 INFO L87 Difference]: Start difference. First operand 16136 states and 116488 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:05,812 INFO L93 Difference]: Finished difference Result 17378 states and 122339 transitions. [2021-10-08 16:37:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:37:05,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2021-10-08 16:37:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:05,912 INFO L225 Difference]: With dead ends: 17378 [2021-10-08 16:37:05,912 INFO L226 Difference]: Without dead ends: 17212 [2021-10-08 16:37:05,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:05,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2021-10-08 16:37:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 16444. [2021-10-08 16:37:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16444 states, 16443 states have (on average 7.194854953475643) internal successors, (118305), 16443 states have internal predecessors, (118305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16444 states to 16444 states and 118305 transitions. [2021-10-08 16:37:06,629 INFO L78 Accepts]: Start accepts. Automaton has 16444 states and 118305 transitions. Word has length 33 [2021-10-08 16:37:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:06,629 INFO L470 AbstractCegarLoop]: Abstraction has 16444 states and 118305 transitions. [2021-10-08 16:37:06,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16444 states and 118305 transitions. [2021-10-08 16:37:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:37:06,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:06,692 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:06,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:06,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:06,893 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:37:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1975860718, now seen corresponding path program 3 times [2021-10-08 16:37:06,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:06,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735528826] [2021-10-08 16:37:06,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:37:06,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:06,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:06,897 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:06,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 16:37:07,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:37:07,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:07,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:07,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:08,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:08,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:08,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735528826] [2021-10-08 16:37:08,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735528826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:08,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:08,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:37:08,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406502111] [2021-10-08 16:37:08,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:08,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:08,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:08,352 INFO L87 Difference]: Start difference. First operand 16444 states and 118305 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:11,454 INFO L93 Difference]: Finished difference Result 43742 states and 297049 transitions. [2021-10-08 16:37:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:37:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:37:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:11,871 INFO L225 Difference]: With dead ends: 43742 [2021-10-08 16:37:11,871 INFO L226 Difference]: Without dead ends: 43742 [2021-10-08 16:37:11,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 598.0ms TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:37:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43742 states. [2021-10-08 16:37:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43742 to 21920. [2021-10-08 16:37:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21920 states, 21919 states have (on average 7.351567133537114) internal successors, (161139), 21919 states have internal predecessors, (161139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21920 states to 21920 states and 161139 transitions. [2021-10-08 16:37:13,622 INFO L78 Accepts]: Start accepts. Automaton has 21920 states and 161139 transitions. Word has length 34 [2021-10-08 16:37:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:13,622 INFO L470 AbstractCegarLoop]: Abstraction has 21920 states and 161139 transitions. [2021-10-08 16:37:13,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 21920 states and 161139 transitions. [2021-10-08 16:37:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:37:13,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:13,716 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:13,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:13,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:13,923 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:37:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:13,924 INFO L82 PathProgramCache]: Analyzing trace with hash -666794388, now seen corresponding path program 4 times [2021-10-08 16:37:13,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:13,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090616677] [2021-10-08 16:37:13,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:37:13,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:13,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:13,927 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:13,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 16:37:14,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:37:14,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:14,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:37:14,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:14,631 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 16:37:14,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:14,793 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 16:37:14,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:14,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090616677] [2021-10-08 16:37:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090616677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:14,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:14,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:37:14,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243590627] [2021-10-08 16:37:14,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:14,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:14,795 INFO L87 Difference]: Start difference. First operand 21920 states and 161139 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:11,218 INFO L93 Difference]: Finished difference Result 40288 states and 271004 transitions. [2021-10-08 16:38:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:38:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:38:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:11,933 INFO L225 Difference]: With dead ends: 40288 [2021-10-08 16:38:11,933 INFO L226 Difference]: Without dead ends: 40120 [2021-10-08 16:38:11,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2440.8ms TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2021-10-08 16:38:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40120 states. [2021-10-08 16:38:13,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40120 to 23180. [2021-10-08 16:38:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23180 states, 23179 states have (on average 7.303334915224988) internal successors, (169284), 23179 states have internal predecessors, (169284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23180 states to 23180 states and 169284 transitions. [2021-10-08 16:38:13,782 INFO L78 Accepts]: Start accepts. Automaton has 23180 states and 169284 transitions. Word has length 34 [2021-10-08 16:38:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:13,782 INFO L470 AbstractCegarLoop]: Abstraction has 23180 states and 169284 transitions. [2021-10-08 16:38:13,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 23180 states and 169284 transitions. [2021-10-08 16:38:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:38:13,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:13,968 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:13,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:14,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:14,183 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:38:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:14,184 INFO L82 PathProgramCache]: Analyzing trace with hash 818766358, now seen corresponding path program 5 times [2021-10-08 16:38:14,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:14,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040410847] [2021-10-08 16:38:14,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:38:14,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:14,187 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:14,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 16:38:14,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:38:14,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:14,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:38:14,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:14,968 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 16:38:14,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:15,201 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 16:38:15,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:15,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040410847] [2021-10-08 16:38:15,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040410847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:15,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:15,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:38:15,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474473198] [2021-10-08 16:38:15,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:38:15,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:38:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:38:15,204 INFO L87 Difference]: Start difference. First operand 23180 states and 169284 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:17,527 INFO L93 Difference]: Finished difference Result 49646 states and 333188 transitions. [2021-10-08 16:38:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:38:17,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:38:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:18,235 INFO L225 Difference]: With dead ends: 49646 [2021-10-08 16:38:18,235 INFO L226 Difference]: Without dead ends: 49646 [2021-10-08 16:38:18,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 411.7ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:38:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49646 states. [2021-10-08 16:38:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49646 to 22222. [2021-10-08 16:38:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22222 states, 22221 states have (on average 7.250483776607713) internal successors, (161113), 22221 states have internal predecessors, (161113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22222 states to 22222 states and 161113 transitions. [2021-10-08 16:38:19,598 INFO L78 Accepts]: Start accepts. Automaton has 22222 states and 161113 transitions. Word has length 34 [2021-10-08 16:38:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:19,598 INFO L470 AbstractCegarLoop]: Abstraction has 22222 states and 161113 transitions. [2021-10-08 16:38:19,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22222 states and 161113 transitions. [2021-10-08 16:38:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:38:20,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:20,092 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:20,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:20,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:20,305 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:38:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash -823239486, now seen corresponding path program 6 times [2021-10-08 16:38:20,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:20,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151367309] [2021-10-08 16:38:20,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:38:20,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:20,308 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:20,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 16:38:21,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:38:21,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:21,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:21,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:21,386 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 16:38:21,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:21,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:21,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151367309] [2021-10-08 16:38:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151367309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:21,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:21,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:38:21,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896313538] [2021-10-08 16:38:21,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:38:21,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:38:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:38:21,901 INFO L87 Difference]: Start difference. First operand 22222 states and 161113 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:26,174 INFO L93 Difference]: Finished difference Result 76668 states and 514547 transitions. [2021-10-08 16:38:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:38:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:38:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:26,895 INFO L225 Difference]: With dead ends: 76668 [2021-10-08 16:38:26,895 INFO L226 Difference]: Without dead ends: 76668 [2021-10-08 16:38:26,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1301.0ms TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:38:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76668 states. [2021-10-08 16:38:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76668 to 26170. [2021-10-08 16:38:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26170 states, 26169 states have (on average 7.480645038022087) internal successors, (195761), 26169 states have internal predecessors, (195761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26170 states to 26170 states and 195761 transitions. [2021-10-08 16:38:29,765 INFO L78 Accepts]: Start accepts. Automaton has 26170 states and 195761 transitions. Word has length 34 [2021-10-08 16:38:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:29,766 INFO L470 AbstractCegarLoop]: Abstraction has 26170 states and 195761 transitions. [2021-10-08 16:38:29,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26170 states and 195761 transitions. [2021-10-08 16:38:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:38:29,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:29,884 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:29,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:30,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:30,085 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:38:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:30,086 INFO L82 PathProgramCache]: Analyzing trace with hash 996956340, now seen corresponding path program 7 times [2021-10-08 16:38:30,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:30,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96216964] [2021-10-08 16:38:30,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:38:30,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:30,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:30,089 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:30,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 16:38:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:38:30,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:38:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:30,861 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 16:38:30,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:31,027 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 16:38:31,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:31,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96216964] [2021-10-08 16:38:31,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96216964] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:31,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:31,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:38:31,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968744008] [2021-10-08 16:38:31,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:38:31,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:38:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:38:31,031 INFO L87 Difference]: Start difference. First operand 26170 states and 195761 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:50,579 INFO L93 Difference]: Finished difference Result 41406 states and 287058 transitions. [2021-10-08 16:38:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:38:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:38:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:50,863 INFO L225 Difference]: With dead ends: 41406 [2021-10-08 16:38:50,863 INFO L226 Difference]: Without dead ends: 41298 [2021-10-08 16:38:50,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2370.2ms TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:38:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41298 states. [2021-10-08 16:38:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41298 to 26292. [2021-10-08 16:38:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26292 states, 26291 states have (on average 7.472024647217679) internal successors, (196447), 26291 states have internal predecessors, (196447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26292 states to 26292 states and 196447 transitions. [2021-10-08 16:38:53,324 INFO L78 Accepts]: Start accepts. Automaton has 26292 states and 196447 transitions. Word has length 34 [2021-10-08 16:38:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:53,329 INFO L470 AbstractCegarLoop]: Abstraction has 26292 states and 196447 transitions. [2021-10-08 16:38:53,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 26292 states and 196447 transitions. [2021-10-08 16:38:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:38:53,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:53,544 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:53,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:53,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:53,757 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:38:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash -501955557, now seen corresponding path program 3 times [2021-10-08 16:38:53,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:53,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31174593] [2021-10-08 16:38:53,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:38:53,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:53,760 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:53,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 16:38:54,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:38:54,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:54,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:38:54,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:54,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:55,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:55,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31174593] [2021-10-08 16:38:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31174593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:55,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:55,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:38:55,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672015571] [2021-10-08 16:38:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:55,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:55,667 INFO L87 Difference]: Start difference. First operand 26292 states and 196447 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:59,631 INFO L93 Difference]: Finished difference Result 58242 states and 414140 transitions. [2021-10-08 16:38:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:38:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 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 34 [2021-10-08 16:38:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:00,254 INFO L225 Difference]: With dead ends: 58242 [2021-10-08 16:39:00,254 INFO L226 Difference]: Without dead ends: 58242 [2021-10-08 16:39:00,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1326.6ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:39:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58242 states. [2021-10-08 16:39:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58242 to 39886. [2021-10-08 16:39:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39886 states, 39885 states have (on average 7.495549705403033) internal successors, (298960), 39885 states have internal predecessors, (298960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39886 states to 39886 states and 298960 transitions. [2021-10-08 16:39:04,017 INFO L78 Accepts]: Start accepts. Automaton has 39886 states and 298960 transitions. Word has length 34 [2021-10-08 16:39:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:04,017 INFO L470 AbstractCegarLoop]: Abstraction has 39886 states and 298960 transitions. [2021-10-08 16:39:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 39886 states and 298960 transitions. [2021-10-08 16:39:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:39:04,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:04,234 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:04,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:04,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:04,450 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:39:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash 343488029, now seen corresponding path program 4 times [2021-10-08 16:39:04,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:04,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310081415] [2021-10-08 16:39:04,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:39:04,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:04,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:04,457 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:04,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 16:39:05,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:39:05,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:05,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:39:05,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:05,864 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 16:39:05,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:06,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:06,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310081415] [2021-10-08 16:39:06,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310081415] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:06,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:06,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:39:06,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324024225] [2021-10-08 16:39:06,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:39:06,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:39:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:39:06,249 INFO L87 Difference]: Start difference. First operand 39886 states and 298960 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:18,756 INFO L93 Difference]: Finished difference Result 59474 states and 417456 transitions. [2021-10-08 16:39:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:39:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 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 34 [2021-10-08 16:39:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:19,278 INFO L225 Difference]: With dead ends: 59474 [2021-10-08 16:39:19,279 INFO L226 Difference]: Without dead ends: 59378 [2021-10-08 16:39:19,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 553.8ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:39:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59378 states. [2021-10-08 16:39:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59378 to 41476. [2021-10-08 16:39:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41476 states, 41475 states have (on average 7.436262808921037) internal successors, (308419), 41475 states have internal predecessors, (308419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41476 states to 41476 states and 308419 transitions. [2021-10-08 16:39:22,617 INFO L78 Accepts]: Start accepts. Automaton has 41476 states and 308419 transitions. Word has length 34 [2021-10-08 16:39:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:22,617 INFO L470 AbstractCegarLoop]: Abstraction has 41476 states and 308419 transitions. [2021-10-08 16:39:22,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 41476 states and 308419 transitions. [2021-10-08 16:39:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:39:22,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:22,878 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:22,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 16:39:23,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:23,091 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:39:23,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1952721965, now seen corresponding path program 5 times [2021-10-08 16:39:23,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:23,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565237235] [2021-10-08 16:39:23,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:39:23,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:23,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:23,095 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:23,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 16:39:23,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:39:23,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:23,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:39:23,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:24,093 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 16:39:24,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:24,307 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 16:39:24,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:24,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565237235] [2021-10-08 16:39:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565237235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:24,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:24,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:39:24,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999280676] [2021-10-08 16:39:24,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:39:24,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:39:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:39:24,312 INFO L87 Difference]: Start difference. First operand 41476 states and 308419 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:46,796 INFO L93 Difference]: Finished difference Result 63594 states and 443866 transitions. [2021-10-08 16:39:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:39:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 34 [2021-10-08 16:39:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:47,877 INFO L225 Difference]: With dead ends: 63594 [2021-10-08 16:39:47,877 INFO L226 Difference]: Without dead ends: 63462 [2021-10-08 16:39:47,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 391.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:39:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63462 states. [2021-10-08 16:39:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63462 to 43030. [2021-10-08 16:39:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43030 states, 43029 states have (on average 7.481140626089382) internal successors, (321906), 43029 states have internal predecessors, (321906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43030 states to 43030 states and 321906 transitions. [2021-10-08 16:39:51,093 INFO L78 Accepts]: Start accepts. Automaton has 43030 states and 321906 transitions. Word has length 34 [2021-10-08 16:39:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:51,093 INFO L470 AbstractCegarLoop]: Abstraction has 43030 states and 321906 transitions. [2021-10-08 16:39:51,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 43030 states and 321906 transitions. [2021-10-08 16:39:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:39:51,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:51,280 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:51,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:51,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:51,481 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:39:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 704672875, now seen corresponding path program 6 times [2021-10-08 16:39:51,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:51,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970363643] [2021-10-08 16:39:51,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:39:51,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:51,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:51,485 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:51,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 16:39:52,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:39:52,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:52,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:39:52,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:53,077 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 16:39:53,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:53,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:53,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970363643] [2021-10-08 16:39:53,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970363643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:53,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:53,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:39:53,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200945647] [2021-10-08 16:39:53,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:39:53,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:39:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:39:53,470 INFO L87 Difference]: Start difference. First operand 43030 states and 321906 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:56,540 INFO L93 Difference]: Finished difference Result 77030 states and 543951 transitions. [2021-10-08 16:39:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:56,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 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 34 [2021-10-08 16:39:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:57,771 INFO L225 Difference]: With dead ends: 77030 [2021-10-08 16:39:57,772 INFO L226 Difference]: Without dead ends: 77030 [2021-10-08 16:39:57,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 533.4ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:39:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77030 states. [2021-10-08 16:40:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77030 to 45690. [2021-10-08 16:40:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45690 states, 45689 states have (on average 7.517454967278776) internal successors, (343465), 45689 states have internal predecessors, (343465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45690 states to 45690 states and 343465 transitions. [2021-10-08 16:40:01,825 INFO L78 Accepts]: Start accepts. Automaton has 45690 states and 343465 transitions. Word has length 34 [2021-10-08 16:40:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:01,825 INFO L470 AbstractCegarLoop]: Abstraction has 45690 states and 343465 transitions. [2021-10-08 16:40:01,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 45690 states and 343465 transitions. [2021-10-08 16:40:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:40:02,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:02,088 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:02,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:02,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:02,289 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:40:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1551558990, now seen corresponding path program 3 times [2021-10-08 16:40:02,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:02,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660975040] [2021-10-08 16:40:02,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:40:02,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:02,292 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:02,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 16:40:03,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:40:03,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:40:03,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:03,407 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 16:40:03,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:03,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:03,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660975040] [2021-10-08 16:40:03,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660975040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:03,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:03,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:40:03,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001885635] [2021-10-08 16:40:03,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:40:03,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:40:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:40:03,645 INFO L87 Difference]: Start difference. First operand 45690 states and 343465 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:11,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:11,930 INFO L93 Difference]: Finished difference Result 107202 states and 793589 transitions. [2021-10-08 16:40:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:40:11,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 34 [2021-10-08 16:40:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:13,222 INFO L225 Difference]: With dead ends: 107202 [2021-10-08 16:40:13,223 INFO L226 Difference]: Without dead ends: 107202 [2021-10-08 16:40:13,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 315.5ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:40:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107202 states. [2021-10-08 16:40:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107202 to 65620. [2021-10-08 16:40:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65620 states, 65619 states have (on average 7.758179795486064) internal successors, (509084), 65619 states have internal predecessors, (509084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65620 states to 65620 states and 509084 transitions. [2021-10-08 16:40:19,495 INFO L78 Accepts]: Start accepts. Automaton has 65620 states and 509084 transitions. Word has length 34 [2021-10-08 16:40:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:19,495 INFO L470 AbstractCegarLoop]: Abstraction has 65620 states and 509084 transitions. [2021-10-08 16:40:19,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 65620 states and 509084 transitions. [2021-10-08 16:40:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:40:20,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:20,500 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:20,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:20,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:20,714 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:40:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash -780120012, now seen corresponding path program 4 times [2021-10-08 16:40:20,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:20,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663009742] [2021-10-08 16:40:20,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:40:20,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:20,717 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:20,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 16:40:21,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:40:21,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:21,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:40:21,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:21,652 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 16:40:21,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:21,868 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 16:40:21,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:21,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663009742] [2021-10-08 16:40:21,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663009742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:21,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:21,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:40:21,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882668586] [2021-10-08 16:40:21,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:40:21,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:21,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:40:21,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:40:21,870 INFO L87 Difference]: Start difference. First operand 65620 states and 509084 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:28,922 INFO L93 Difference]: Finished difference Result 112622 states and 820390 transitions. [2021-10-08 16:40:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:40:28,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 34 [2021-10-08 16:40:28,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:31,007 INFO L225 Difference]: With dead ends: 112622 [2021-10-08 16:40:31,008 INFO L226 Difference]: Without dead ends: 112622 [2021-10-08 16:40:31,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 423.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:40:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112622 states. [2021-10-08 16:40:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112622 to 63470. [2021-10-08 16:40:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63470 states, 63469 states have (on average 7.724400888622792) internal successors, (490260), 63469 states have internal predecessors, (490260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63470 states to 63470 states and 490260 transitions. [2021-10-08 16:40:38,901 INFO L78 Accepts]: Start accepts. Automaton has 63470 states and 490260 transitions. Word has length 34 [2021-10-08 16:40:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:38,902 INFO L470 AbstractCegarLoop]: Abstraction has 63470 states and 490260 transitions. [2021-10-08 16:40:38,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 63470 states and 490260 transitions. [2021-10-08 16:40:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:40:39,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:39,509 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:39,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:39,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:39,722 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:40:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1488050751, now seen corresponding path program 5 times [2021-10-08 16:40:39,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:39,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162748540] [2021-10-08 16:40:39,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:40:39,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:39,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:39,726 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:39,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 16:40:40,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:40:40,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:40,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:40:40,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:41,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:41,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:41,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162748540] [2021-10-08 16:40:41,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162748540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:41,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:41,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:40:41,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335585532] [2021-10-08 16:40:41,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:40:41,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:40:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:40:41,785 INFO L87 Difference]: Start difference. First operand 63470 states and 490260 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:45,568 INFO L93 Difference]: Finished difference Result 110238 states and 805099 transitions. [2021-10-08 16:40:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:40:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-10-08 16:40:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:47,577 INFO L225 Difference]: With dead ends: 110238 [2021-10-08 16:40:47,577 INFO L226 Difference]: Without dead ends: 110238 [2021-10-08 16:40:47,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 258.7ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110238 states. [2021-10-08 16:40:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110238 to 63470. [2021-10-08 16:40:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63470 states, 63469 states have (on average 7.724400888622792) internal successors, (490260), 63469 states have internal predecessors, (490260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63470 states to 63470 states and 490260 transitions. [2021-10-08 16:40:53,062 INFO L78 Accepts]: Start accepts. Automaton has 63470 states and 490260 transitions. Word has length 34 [2021-10-08 16:40:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:53,062 INFO L470 AbstractCegarLoop]: Abstraction has 63470 states and 490260 transitions. [2021-10-08 16:40:53,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 63470 states and 490260 transitions. [2021-10-08 16:40:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:40:53,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:53,995 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:54,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:54,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:54,209 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:40:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1845633976, now seen corresponding path program 6 times [2021-10-08 16:40:54,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:54,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375302020] [2021-10-08 16:40:54,211 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:40:54,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:54,212 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:54,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 16:40:55,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:40:55,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:55,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:40:55,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:55,376 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 16:40:55,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:55,604 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 16:40:55,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:55,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375302020] [2021-10-08 16:40:55,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375302020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:55,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:55,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:40:55,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366027569] [2021-10-08 16:40:55,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:40:55,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:40:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:40:55,606 INFO L87 Difference]: Start difference. First operand 63470 states and 490260 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:29,596 INFO L93 Difference]: Finished difference Result 91734 states and 665730 transitions. [2021-10-08 16:41:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:41:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 34 [2021-10-08 16:41:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:30,675 INFO L225 Difference]: With dead ends: 91734 [2021-10-08 16:41:30,675 INFO L226 Difference]: Without dead ends: 91500 [2021-10-08 16:41:30,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2452.0ms TimeCoverageRelationStatistics Valid=64, Invalid=175, Unknown=1, NotChecked=0, Total=240 [2021-10-08 16:41:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91500 states. [2021-10-08 16:41:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91500 to 65900. [2021-10-08 16:41:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65900 states, 65899 states have (on average 7.6784776703743605) internal successors, (506004), 65899 states have internal predecessors, (506004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65900 states to 65900 states and 506004 transitions. [2021-10-08 16:41:36,515 INFO L78 Accepts]: Start accepts. Automaton has 65900 states and 506004 transitions. Word has length 34 [2021-10-08 16:41:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 65900 states and 506004 transitions. [2021-10-08 16:41:36,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 65900 states and 506004 transitions. [2021-10-08 16:41:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:41:36,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:36,939 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:36,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:37,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:37,146 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:41:37,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:37,146 INFO L82 PathProgramCache]: Analyzing trace with hash -47725042, now seen corresponding path program 7 times [2021-10-08 16:41:37,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:37,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322954743] [2021-10-08 16:41:37,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:41:37,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:37,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:37,149 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:37,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 16:41:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:37,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:41:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:38,088 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 16:41:38,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:38,296 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 16:41:38,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:38,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322954743] [2021-10-08 16:41:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322954743] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:38,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:38,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:41:38,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719572642] [2021-10-08 16:41:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:41:38,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:41:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:41:38,299 INFO L87 Difference]: Start difference. First operand 65900 states and 506004 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:42,944 INFO L93 Difference]: Finished difference Result 121782 states and 891983 transitions. [2021-10-08 16:41:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:41:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 34 [2021-10-08 16:41:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:45,368 INFO L225 Difference]: With dead ends: 121782 [2021-10-08 16:41:45,368 INFO L226 Difference]: Without dead ends: 121782 [2021-10-08 16:41:45,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 216.9ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121782 states. [2021-10-08 16:41:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121782 to 68274. [2021-10-08 16:41:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68274 states, 68273 states have (on average 7.740087589530268) internal successors, (528439), 68273 states have internal predecessors, (528439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68274 states to 68274 states and 528439 transitions. [2021-10-08 16:41:52,147 INFO L78 Accepts]: Start accepts. Automaton has 68274 states and 528439 transitions. Word has length 34 [2021-10-08 16:41:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:52,150 INFO L470 AbstractCegarLoop]: Abstraction has 68274 states and 528439 transitions. [2021-10-08 16:41:52,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 68274 states and 528439 transitions. [2021-10-08 16:41:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:41:52,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:52,712 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:52,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:52,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:52,927 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:41:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1541415287, now seen corresponding path program 8 times [2021-10-08 16:41:52,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:52,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430914469] [2021-10-08 16:41:52,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:41:52,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:52,930 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:52,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 16:41:54,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:41:54,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:54,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:41:54,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:55,200 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 16:41:55,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:55,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:55,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430914469] [2021-10-08 16:41:55,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430914469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:55,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:55,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:41:55,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955409754] [2021-10-08 16:41:55,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:41:55,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:55,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:41:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:41:55,716 INFO L87 Difference]: Start difference. First operand 68274 states and 528439 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:03,794 INFO L93 Difference]: Finished difference Result 128578 states and 950302 transitions. [2021-10-08 16:42:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:42:03,795 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-10-08 16:42:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:06,066 INFO L225 Difference]: With dead ends: 128578 [2021-10-08 16:42:06,066 INFO L226 Difference]: Without dead ends: 128578 [2021-10-08 16:42:06,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 675.0ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:42:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128578 states. [2021-10-08 16:42:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128578 to 68028. [2021-10-08 16:42:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68028 states, 68027 states have (on average 7.709732900171991) internal successors, (524470), 68027 states have internal predecessors, (524470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68028 states to 68028 states and 524470 transitions. [2021-10-08 16:42:13,396 INFO L78 Accepts]: Start accepts. Automaton has 68028 states and 524470 transitions. Word has length 34 [2021-10-08 16:42:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:13,396 INFO L470 AbstractCegarLoop]: Abstraction has 68028 states and 524470 transitions. [2021-10-08 16:42:13,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 68028 states and 524470 transitions. [2021-10-08 16:42:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:42:14,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:14,383 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:14,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:14,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:14,597 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:42:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:14,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1113239006, now seen corresponding path program 9 times [2021-10-08 16:42:14,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:14,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820698683] [2021-10-08 16:42:14,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:42:14,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:14,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:14,600 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:14,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 16:42:15,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:42:15,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:15,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:42:15,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:15,858 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 16:42:15,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:16,144 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 16:42:16,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:16,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820698683] [2021-10-08 16:42:16,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820698683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:16,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:16,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:42:16,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847130964] [2021-10-08 16:42:16,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:42:16,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:42:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:42:16,146 INFO L87 Difference]: Start difference. First operand 68028 states and 524470 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:38,910 INFO L93 Difference]: Finished difference Result 112622 states and 829346 transitions. [2021-10-08 16:42:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:42:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 34 [2021-10-08 16:42:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:40,858 INFO L225 Difference]: With dead ends: 112622 [2021-10-08 16:42:40,859 INFO L226 Difference]: Without dead ends: 112494 [2021-10-08 16:42:40,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112494 states. [2021-10-08 16:42:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112494 to 75150. [2021-10-08 16:42:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75150 states, 75149 states have (on average 7.841421708871708) internal successors, (589275), 75149 states have internal predecessors, (589275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75150 states to 75150 states and 589275 transitions. [2021-10-08 16:42:47,533 INFO L78 Accepts]: Start accepts. Automaton has 75150 states and 589275 transitions. Word has length 34 [2021-10-08 16:42:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:47,533 INFO L470 AbstractCegarLoop]: Abstraction has 75150 states and 589275 transitions. [2021-10-08 16:42:47,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 75150 states and 589275 transitions. [2021-10-08 16:42:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:42:48,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:48,586 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:48,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:48,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:48,804 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:42:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1546091875, now seen corresponding path program 10 times [2021-10-08 16:42:48,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:48,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614311412] [2021-10-08 16:42:48,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:42:48,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:48,806 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:48,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 16:42:49,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:42:49,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:49,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:49,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:50,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:50,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:50,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614311412] [2021-10-08 16:42:50,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614311412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:50,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:50,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:42:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120223321] [2021-10-08 16:42:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:42:50,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:42:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:42:50,490 INFO L87 Difference]: Start difference. First operand 75150 states and 589275 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:58,324 INFO L93 Difference]: Finished difference Result 178608 states and 1341816 transitions. [2021-10-08 16:42:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:42:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-10-08 16:42:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:03,030 INFO L225 Difference]: With dead ends: 178608 [2021-10-08 16:43:03,030 INFO L226 Difference]: Without dead ends: 178608 [2021-10-08 16:43:03,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 698.2ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:43:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178608 states. [2021-10-08 16:43:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178608 to 95934. [2021-10-08 16:43:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95934 states, 95933 states have (on average 8.062793824856932) internal successors, (773488), 95933 states have internal predecessors, (773488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95934 states to 95934 states and 773488 transitions. [2021-10-08 16:43:14,527 INFO L78 Accepts]: Start accepts. Automaton has 95934 states and 773488 transitions. Word has length 34 [2021-10-08 16:43:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:14,528 INFO L470 AbstractCegarLoop]: Abstraction has 95934 states and 773488 transitions. [2021-10-08 16:43:14,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 95934 states and 773488 transitions. [2021-10-08 16:43:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:43:15,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:15,678 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:43:15,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:15,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:43:15,879 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:43:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:15,880 INFO L82 PathProgramCache]: Analyzing trace with hash 215566478, now seen corresponding path program 11 times [2021-10-08 16:43:15,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:15,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315241106] [2021-10-08 16:43:15,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:43:15,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:15,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:15,882 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:43:15,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 16:43:16,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:43:16,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:16,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:43:16,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:17,027 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 16:43:17,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:17,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:17,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315241106] [2021-10-08 16:43:17,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315241106] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:17,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:17,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:43:17,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301275282] [2021-10-08 16:43:17,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:43:17,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:43:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:43:17,664 INFO L87 Difference]: Start difference. First operand 95934 states and 773488 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:23,345 INFO L93 Difference]: Finished difference Result 144848 states and 1106923 transitions. [2021-10-08 16:43:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:43:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-10-08 16:43:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:25,854 INFO L225 Difference]: With dead ends: 144848 [2021-10-08 16:43:25,854 INFO L226 Difference]: Without dead ends: 144764 [2021-10-08 16:43:25,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1217.5ms TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:43:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144764 states. [2021-10-08 16:43:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144764 to 105286. [2021-10-08 16:43:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105286 states, 105285 states have (on average 7.9892957211378635) internal successors, (841153), 105285 states have internal predecessors, (841153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105286 states to 105286 states and 841153 transitions. [2021-10-08 16:43:37,188 INFO L78 Accepts]: Start accepts. Automaton has 105286 states and 841153 transitions. Word has length 34 [2021-10-08 16:43:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 105286 states and 841153 transitions. [2021-10-08 16:43:37,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 105286 states and 841153 transitions. [2021-10-08 16:43:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:43:38,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:38,014 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:43:38,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:38,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:43:38,215 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:43:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash 581536119, now seen corresponding path program 7 times [2021-10-08 16:43:38,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:38,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431522734] [2021-10-08 16:43:38,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:43:38,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:38,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:38,218 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:43:38,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 16:43:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:43:38,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:43:38,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:39,224 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 16:43:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:39,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:39,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431522734] [2021-10-08 16:43:39,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431522734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:39,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:39,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:43:39,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983714690] [2021-10-08 16:43:39,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:43:39,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:43:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:43:39,613 INFO L87 Difference]: Start difference. First operand 105286 states and 841153 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:47,053 INFO L93 Difference]: Finished difference Result 167794 states and 1270487 transitions. [2021-10-08 16:43:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:43:47,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 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 34 [2021-10-08 16:43:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:51,568 INFO L225 Difference]: With dead ends: 167794 [2021-10-08 16:43:51,568 INFO L226 Difference]: Without dead ends: 167710 [2021-10-08 16:43:51,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 928.5ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:43:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167710 states. [2021-10-08 16:44:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167710 to 124680. [2021-10-08 16:44:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124680 states, 124679 states have (on average 7.923435382061133) internal successors, (987886), 124679 states have internal predecessors, (987886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124680 states to 124680 states and 987886 transitions. [2021-10-08 16:44:07,082 INFO L78 Accepts]: Start accepts. Automaton has 124680 states and 987886 transitions. Word has length 34 [2021-10-08 16:44:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:07,082 INFO L470 AbstractCegarLoop]: Abstraction has 124680 states and 987886 transitions. [2021-10-08 16:44:07,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 124680 states and 987886 transitions. [2021-10-08 16:44:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:44:08,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:08,005 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:44:08,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:08,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:44:08,213 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-08 16:44:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1356397535, now seen corresponding path program 8 times [2021-10-08 16:44:08,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:08,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630320117] [2021-10-08 16:44:08,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:44:08,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:08,216 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:44:08,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 16:44:09,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:44:09,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:09,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:44:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:10,012 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 16:44:10,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:10,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:10,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630320117] [2021-10-08 16:44:10,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630320117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:10,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:44:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790386865] [2021-10-08 16:44:10,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:44:10,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:44:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:44:10,684 INFO L87 Difference]: Start difference. First operand 124680 states and 987886 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:18,378 INFO L93 Difference]: Finished difference Result 206378 states and 1569795 transitions. [2021-10-08 16:44:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:44:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 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 34 [2021-10-08 16:44:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:22,039 INFO L225 Difference]: With dead ends: 206378 [2021-10-08 16:44:22,040 INFO L226 Difference]: Without dead ends: 206288 [2021-10-08 16:44:22,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 844.0ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:44:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206288 states. [2021-10-08 16:44:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206288 to 140928. [2021-10-08 16:44:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140928 states, 140927 states have (on average 8.018938883251613) internal successors, (1130085), 140927 states have internal predecessors, (1130085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140928 states to 140928 states and 1130085 transitions. [2021-10-08 16:44:40,420 INFO L78 Accepts]: Start accepts. Automaton has 140928 states and 1130085 transitions. Word has length 34 [2021-10-08 16:44:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:40,420 INFO L470 AbstractCegarLoop]: Abstraction has 140928 states and 1130085 transitions. [2021-10-08 16:44:40,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 140928 states and 1130085 transitions.