/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/chl-simpl-str-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:37:17,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:37:17,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:37:17,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:37:17,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:37:17,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:37:17,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:37:17,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:37:17,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:37:17,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:37:17,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:37:17,566 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:37:17,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:37:17,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:37:17,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:37:17,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:37:17,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:37:17,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:37:17,569 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:37:17,569 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:37:17,570 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:37:17,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:37:17,570 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:37:17,570 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:37:17,570 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:37:17,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:37:17,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:37:17,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:37:17,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:37:17,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:37:17,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:37:17,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:37:17,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:37:17,572 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:37:17,572 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:37:17,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:37:17,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:37:17,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:37:17,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:37:17,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:37:17,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:37:17,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:37:17,983 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:37:17,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2021-10-07 15:37:18,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9cb1dfa/24ae17e39d1d4486b4d17a50440aa3c4/FLAG7c71809fd [2021-10-07 15:37:18,747 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:37:18,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2021-10-07 15:37:18,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9cb1dfa/24ae17e39d1d4486b4d17a50440aa3c4/FLAG7c71809fd [2021-10-07 15:37:19,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9cb1dfa/24ae17e39d1d4486b4d17a50440aa3c4 [2021-10-07 15:37:19,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:37:19,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:37:19,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:37:19,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:37:19,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:37:19,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f61eab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19, skipping insertion in model container [2021-10-07 15:37:19,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:37:19,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:37:19,396 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/chl-simpl-str-trans.wvr.c[2466,2479] [2021-10-07 15:37:19,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:37:19,419 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:37:19,448 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/chl-simpl-str-trans.wvr.c[2466,2479] [2021-10-07 15:37:19,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:37:19,468 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:37:19,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19 WrapperNode [2021-10-07 15:37:19,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:37:19,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:37:19,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:37:19,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:37:19,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:37:19,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:37:19,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:37:19,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:37:19,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:37:19,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:37:19,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:37:19,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:37:19,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (1/1) ... [2021-10-07 15:37:19,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:37:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:37:19,596 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) [2021-10-07 15:37:19,621 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 [2021-10-07 15:37:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:37:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:37:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:37:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:37:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:37:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:37:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:37:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:37:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:37:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:37:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:37:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:37:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:37:19,670 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:37:20,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:37:20,180 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-07 15:37:20,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:37:20 BoogieIcfgContainer [2021-10-07 15:37:20,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:37:20,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:37:20,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:37:20,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:37:20,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:37:19" (1/3) ... [2021-10-07 15:37:20,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b069e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:37:20, skipping insertion in model container [2021-10-07 15:37:20,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:37:19" (2/3) ... [2021-10-07 15:37:20,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b069e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:37:20, skipping insertion in model container [2021-10-07 15:37:20,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:37:20" (3/3) ... [2021-10-07 15:37:20,193 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2021-10-07 15:37:20,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:37:20,200 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:37:20,200 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:37:20,252 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,254 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,260 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,265 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,265 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,266 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,266 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,266 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,266 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,283 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,283 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,287 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,287 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,294 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,294 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,308 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,309 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,309 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,309 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,309 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,312 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,312 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,313 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,313 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,313 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:37:20,322 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:37:20,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:37:20,399 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 [2021-10-07 15:37:20,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:37:20,420 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:37:20,434 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 150 transitions, 324 flow [2021-10-07 15:37:20,438 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 150 transitions, 324 flow [2021-10-07 15:37:20,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 150 transitions, 324 flow [2021-10-07 15:37:20,557 INFO L129 PetriNetUnfolder]: 10/147 cut-off events. [2021-10-07 15:37:20,558 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:37:20,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 10/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-07 15:37:20,576 INFO L116 LiptonReduction]: Number of co-enabled transitions 3888 [2021-10-07 15:37:33,968 INFO L131 LiptonReduction]: Checked pairs total: 3944 [2021-10-07 15:37:33,968 INFO L133 LiptonReduction]: Total number of compositions: 174 [2021-10-07 15:37:33,979 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2021-10-07 15:37:33,994 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:37:34,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:34,003 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:37:34,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 600, now seen corresponding path program 1 times [2021-10-07 15:37:34,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:34,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166198434] [2021-10-07 15:37:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:34,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:34,030 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) [2021-10-07 15:37:34,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:37:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:37:34,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:34,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:34,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:34,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166198434] [2021-10-07 15:37:34,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166198434] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:34,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:34,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:37:34,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354437173] [2021-10-07 15:37:34,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:37:34,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:37:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:37:34,127 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 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) [2021-10-07 15:37:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:34,146 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2021-10-07 15:37:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:37:34,148 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 [2021-10-07 15:37:34,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:34,161 INFO L225 Difference]: With dead ends: 84 [2021-10-07 15:37:34,161 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 15:37:34,163 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 [2021-10-07 15:37:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 15:37:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-07 15:37:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2021-10-07 15:37:34,215 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2021-10-07 15:37:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:34,215 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2021-10-07 15:37:34,215 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) [2021-10-07 15:37:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2021-10-07 15:37:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:37:34,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:34,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:37:34,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:34,429 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 [2021-10-07 15:37:34,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 590207, now seen corresponding path program 1 times [2021-10-07 15:37:34,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:34,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740892709] [2021-10-07 15:37:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:34,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:34,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:34,436 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) [2021-10-07 15:37:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:37:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:37:34,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:34,810 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:37:34,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:37:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:34,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:34,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:34,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740892709] [2021-10-07 15:37:34,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740892709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:34,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:37:34,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828293419] [2021-10-07 15:37:34,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:37:34,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:37:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:37:34,980 INFO L87 Difference]: Start difference. First operand 84 states and 164 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) [2021-10-07 15:37:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:35,033 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2021-10-07 15:37:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:35,034 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 [2021-10-07 15:37:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:35,036 INFO L225 Difference]: With dead ends: 78 [2021-10-07 15:37:35,036 INFO L226 Difference]: Without dead ends: 78 [2021-10-07 15:37:35,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:37:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-07 15:37:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-07 15:37:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2021-10-07 15:37:35,048 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2021-10-07 15:37:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:35,048 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2021-10-07 15:37:35,048 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) [2021-10-07 15:37:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2021-10-07 15:37:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:37:35,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:35,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:37:35,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:35,257 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 [2021-10-07 15:37:35,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:35,259 INFO L82 PathProgramCache]: Analyzing trace with hash 590208, now seen corresponding path program 1 times [2021-10-07 15:37:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284631489] [2021-10-07 15:37:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:35,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:35,265 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) [2021-10-07 15:37:35,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:37:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:35,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:37:35,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:35,377 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:37:35,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:37:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:35,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:35,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:35,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284631489] [2021-10-07 15:37:35,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284631489] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:35,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:35,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:37:35,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138726949] [2021-10-07 15:37:35,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:37:35,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:37:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:35,424 INFO L87 Difference]: Start difference. First operand 78 states and 153 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:35,458 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2021-10-07 15:37:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:35,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:37:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:35,461 INFO L225 Difference]: With dead ends: 72 [2021-10-07 15:37:35,461 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 15:37:35,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 15:37:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-07 15:37:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2021-10-07 15:37:35,471 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2021-10-07 15:37:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:35,471 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2021-10-07 15:37:35,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2021-10-07 15:37:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:37:35,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:35,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:37:35,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:35,685 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 [2021-10-07 15:37:35,686 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash 567203631, now seen corresponding path program 1 times [2021-10-07 15:37:35,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:35,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61203388] [2021-10-07 15:37:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:35,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:35,694 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) [2021-10-07 15:37:35,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:37:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:37:35,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:35,792 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:37:35,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:37:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:35,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:35,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:35,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61203388] [2021-10-07 15:37:35,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61203388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:35,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:35,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:37:35,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423349332] [2021-10-07 15:37:35,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:37:35,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:37:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:35,863 INFO L87 Difference]: Start difference. First operand 72 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:35,904 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2021-10-07 15:37:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:37:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:35,906 INFO L225 Difference]: With dead ends: 66 [2021-10-07 15:37:35,906 INFO L226 Difference]: Without dead ends: 66 [2021-10-07 15:37:35,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-07 15:37:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-07 15:37:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2021-10-07 15:37:35,914 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2021-10-07 15:37:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2021-10-07 15:37:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2021-10-07 15:37:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:37:35,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:35,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:37:35,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:36,127 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 [2021-10-07 15:37:36,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash 567203632, now seen corresponding path program 1 times [2021-10-07 15:37:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:36,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102695775] [2021-10-07 15:37:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:36,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:36,132 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) [2021-10-07 15:37:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:37:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:36,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:37:36,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:36,379 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:37:36,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:37:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:36,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:36,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:36,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102695775] [2021-10-07 15:37:36,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102695775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:36,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:36,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:37:36,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590002402] [2021-10-07 15:37:36,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:37:36,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:37:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:37:36,578 INFO L87 Difference]: Start difference. First operand 66 states and 131 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) [2021-10-07 15:37:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:36,610 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2021-10-07 15:37:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:36,611 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 [2021-10-07 15:37:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:36,612 INFO L225 Difference]: With dead ends: 60 [2021-10-07 15:37:36,613 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 15:37:36,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:37:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 15:37:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-07 15:37:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-10-07 15:37:36,619 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2021-10-07 15:37:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:36,619 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-10-07 15:37:36,619 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) [2021-10-07 15:37:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-10-07 15:37:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:37:36,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:36,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:36,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:36,831 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 [2021-10-07 15:37:36,831 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash -378145483, now seen corresponding path program 1 times [2021-10-07 15:37:36,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:36,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306858591] [2021-10-07 15:37:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:36,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:36,835 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) [2021-10-07 15:37:36,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:37:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:36,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:37:36,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:36,954 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:37:36,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:37:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:37,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:37,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:37,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306858591] [2021-10-07 15:37:37,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306858591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:37,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:37,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:37:37,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27881448] [2021-10-07 15:37:37,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:37:37,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:37:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:37:37,077 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:37,112 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2021-10-07 15:37:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:37,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:37:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:37,113 INFO L225 Difference]: With dead ends: 52 [2021-10-07 15:37:37,114 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 15:37:37,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:37:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 15:37:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 15:37:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-10-07 15:37:37,119 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2021-10-07 15:37:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:37,119 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-10-07 15:37:37,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-10-07 15:37:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:37:37,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:37,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:37,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:37,331 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 [2021-10-07 15:37:37,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash -378145484, now seen corresponding path program 1 times [2021-10-07 15:37:37,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:37,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476280261] [2021-10-07 15:37:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:37,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:37,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:37,336 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) [2021-10-07 15:37:37,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:37:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:37:37,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:37:37,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:37,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:37,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:37,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476280261] [2021-10-07 15:37:37,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476280261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:37,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:37,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:37:37,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133664093] [2021-10-07 15:37:37,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:37:37,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:37:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:37,581 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:37,607 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2021-10-07 15:37:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:37:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:37:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:37,609 INFO L225 Difference]: With dead ends: 44 [2021-10-07 15:37:37,609 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 15:37:37,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:37:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 15:37:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-07 15:37:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2021-10-07 15:37:37,613 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2021-10-07 15:37:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2021-10-07 15:37:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2021-10-07 15:37:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:37:37,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:37,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:37,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:37,824 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 [2021-10-07 15:37:37,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:37,826 INFO L82 PathProgramCache]: Analyzing trace with hash -598498410, now seen corresponding path program 1 times [2021-10-07 15:37:37,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:37,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052562098] [2021-10-07 15:37:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:37:37,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:37,829 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) [2021-10-07 15:37:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:37:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 15:37:37,947 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 15:37:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 15:37:38,087 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-07 15:37:38,087 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 15:37:38,089 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:37:38,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:37:38,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:37:38,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:37:38,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:37:38,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:37:38,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:37:38,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:37:38,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:37:38,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:37:38,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:37:38,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:37:38,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:38,306 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 [2021-10-07 15:37:38,313 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:37:38,314 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:37:38,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:37:38 BasicIcfg [2021-10-07 15:37:38,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:37:38,389 INFO L168 Benchmark]: Toolchain (without parser) took 19242.37 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 136.2 MB in the beginning and 120.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,390 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:37:38,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.33 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 125.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,392 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 161.5 MB. Free memory was 123.6 MB in the beginning and 122.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,392 INFO L168 Benchmark]: RCFGBuilder took 630.78 ms. Allocated memory is still 161.5 MB. Free memory was 122.0 MB in the beginning and 107.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,393 INFO L168 Benchmark]: TraceAbstraction took 18203.00 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 106.9 MB in the beginning and 120.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:38,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.33 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 125.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 161.5 MB. Free memory was 123.6 MB in the beginning and 122.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.78 ms. Allocated memory is still 161.5 MB. Free memory was 122.0 MB in the beginning and 107.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18203.00 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 106.9 MB in the beginning and 120.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13530.6ms, 150 PlacesBefore, 43 PlacesAfterwards, 150 TransitionsBefore, 33 TransitionsAfterwards, 3888 CoEnabledTransitionPairs, 6 FixpointIterations, 70 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 10 ChoiceCompositions, 174 TotalNumberOfCompositions, 3944 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3944, positive: 3944, positive conditional: 0, positive unconditional: 3944, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2761, positive: 2761, positive conditional: 0, positive unconditional: 2761, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2761, positive: 2761, positive conditional: 0, positive unconditional: 2761, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3944, positive: 1183, positive conditional: 0, positive unconditional: 1183, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2761, unknown conditional: 0, unknown unconditional: 2761] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 78]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 78. Possible FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, length_4, to_int_5, result_6, result_7, result_8; [L59] 0 pthread_t t1, t2, t3; [L62] 0 length_0 = __VERIFIER_nondet_int() [L63] 0 to_int_1 = __VERIFIER_nondet_int() [L64] 0 length_2 = __VERIFIER_nondet_int() [L65] 0 to_int_3 = __VERIFIER_nondet_int() [L66] 0 length_4 = __VERIFIER_nondet_int() [L67] 0 to_int_5 = __VERIFIER_nondet_int() [L70] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [result_6=0, result_7=0, result_8=0] [L41] EXPR 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L41] EXPR 1 length_2 == 0 ? -1 : to_int_1 - to_int_3 [L41] EXPR 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L41] 1 result_6 = length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L43] 1 return 0; [L71] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, length_0=2, length_2=2, result_6=2, result_7=0, result_8=0, to_int_1=0, to_int_3=-2] [L72] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, length_0=2, length_2=2, result_6=2, result_7=0, result_8=0, to_int_1=0, to_int_3=-2] [L73] 0 \read(t1) VAL [\result={0:0}, length_0=2, length_2=2, result_6=2, result_7=0, result_8=0, to_int_1=0, to_int_3=-2] [L73] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, length_0=2, length_2=2, result_6=2, result_7=0, result_8=0, to_int_1=0, to_int_3=-2] [L74] 0 \read(t2) VAL [\result={0:0}, length_0=2, length_2=2, result_6=2, result_7=0, result_8=0, to_int_1=0, to_int_3=-2] [L53] EXPR 3 length_0 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_1 - to_int_5) [L53] EXPR 3 length_4 == 0 ? -1 : to_int_1 - to_int_5 [L53] EXPR 3 length_0 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_1 - to_int_5) [L53] 3 result_8 = length_0 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_1 - to_int_5) [L55] 3 return 0; [L47] EXPR 2 length_2 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_3 - to_int_5) [L47] EXPR 2 length_4 == 0 ? -1 : to_int_3 - to_int_5 [L47] EXPR 2 length_2 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_3 - to_int_5) [L47] 2 result_7 = length_2 == 0 ? (length_4 == 0 ? 0 : 1) : (length_4 == 0 ? -1 : to_int_3 - to_int_5) [L49] 2 return 0; [L74] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, length_0=2, length_2=2, length_4=2, result_6=2, result_7=2147483646, result_8=-2147483648, to_int_1=0, to_int_3=-2, to_int_5=-2147483648] [L75] 0 \read(t3) VAL [\result={0:0}, \result={0:0}, \result={0:0}, length_0=2, length_2=2, length_4=2, result_6=2, result_7=2147483646, result_8=-2147483648, to_int_1=0, to_int_3=-2, to_int_5=-2147483648] [L75] FCALL, JOIN 3 pthread_join(t3, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, length_0=2, length_2=2, length_4=2, result_6=2, result_7=2147483646, result_8=-2147483648, to_int_1=0, to_int_3=-2, to_int_5=-2147483648] [L35] COND FALSE 0 !(!cond) [L78] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, length_0=2, length_2=2, length_4=2, result_6=2, result_7=2147483646, result_8=-2147483648, to_int_1=0, to_int_3=-2, to_int_5=-2147483648] - UnprovableResult [Line: 70]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 192 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 17921.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 12.6ms, AutomataDifference: 299.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13594.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 100 SDtfs, 113 SDslu, 0 SDs, 0 SdLazy, 43 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 161.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 88.8ms SsaConstructionTime, 241.3ms SatisfiabilityAnalysisTime, 1408.3ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 17 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-07 15:37:38,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...