/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/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:14:41,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:14:41,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:14:41,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 18:14:41,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 18:14:41,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 18:14:41,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 18:14:41,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 18:14:41,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 18:14:41,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 18:14:41,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 18:14:41,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 18:14:41,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 18:14:41,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 18:14:41,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 18:14:41,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 18:14:41,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 18:14:41,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 18:14:41,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 18:14:41,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 18:14:41,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 18:14:41,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 18:14:41,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 18:14:41,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 18:14:41,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 18:14:41,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 18:14:41,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 18:14:41,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 18:14:41,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 18:14:41,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 18:14:41,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 18:14:41,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 18:14:41,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 18:14:41,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 18:14:41,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 18:14:41,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 18:14:41,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 18:14:41,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 18:14:41,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:14:41,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:14:41,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:14:41,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:14:41,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:14:41,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:14:41,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:14:41,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:14:41,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:14:41,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:14:41,845 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:14:41,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:14:41,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:14:41,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:14:41,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:14:41,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:14:41,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:14:41,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:14:41,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:14:41,847 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:14:41,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:14:41,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:14:41,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:14:41,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:14:41,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:14:41,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:14:41,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:14:41,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:14:41,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:14:41,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:41,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:14:41,850 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:14:42,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:14:42,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:14:42,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:14:42,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:14:42,331 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:14:42,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-hard1.wvr.c [2021-10-08 18:14:42,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6beaab843/4b134ca44e7a4e0b9e5816b6fb368e4e/FLAG969c9af03 [2021-10-08 18:14:43,042 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:14:43,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c [2021-10-08 18:14:43,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6beaab843/4b134ca44e7a4e0b9e5816b6fb368e4e/FLAG969c9af03 [2021-10-08 18:14:43,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6beaab843/4b134ca44e7a4e0b9e5816b6fb368e4e [2021-10-08 18:14:43,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:14:43,388 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:14:43,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:43,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:14:43,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:14:43,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2a7eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43, skipping insertion in model container [2021-10-08 18:14:43,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:14:43,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:14:43,622 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/test-hard1.wvr.c[2740,2753] [2021-10-08 18:14:43,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:43,645 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:14:43,674 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/test-hard1.wvr.c[2740,2753] [2021-10-08 18:14:43,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:43,698 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:14:43,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43 WrapperNode [2021-10-08 18:14:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:43,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:43,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:14:43,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:14:43,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:43,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:14:43,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:14:43,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:14:43,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:14:43,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:14:43,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:14:43,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:14:43,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (1/1) ... [2021-10-08 18:14:43,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:43,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:14:43,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 18:14:43,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 18:14:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:14:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:14:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 18:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 18:14:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:14:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 18:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 18:14:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:14:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 18:14:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 18:14:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:14:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:14:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:14:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:14:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:14:43,908 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:14:44,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:14:44,564 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 18:14:44,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:44 BoogieIcfgContainer [2021-10-08 18:14:44,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:14:44,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:14:44,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:14:44,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:14:44,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:14:43" (1/3) ... [2021-10-08 18:14:44,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c44f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:44, skipping insertion in model container [2021-10-08 18:14:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:43" (2/3) ... [2021-10-08 18:14:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c44f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:44, skipping insertion in model container [2021-10-08 18:14:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:44" (3/3) ... [2021-10-08 18:14:44,577 INFO L111 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2021-10-08 18:14:44,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:14:44,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 18:14:44,584 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:14:44,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,651 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,654 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,655 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,655 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,655 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,665 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,665 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,666 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,668 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,669 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,671 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,671 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:44,698 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 18:14:44,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:14:44,764 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 18:14:44,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 18:14:44,786 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:14:44,801 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 137 transitions, 306 flow [2021-10-08 18:14:44,805 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 137 transitions, 306 flow [2021-10-08 18:14:44,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 137 transitions, 306 flow [2021-10-08 18:14:45,001 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-10-08 18:14:45,004 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 18:14:45,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 10/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2021-10-08 18:14:45,023 INFO L116 LiptonReduction]: Number of co-enabled transitions 1608 [2021-10-08 18:15:02,958 INFO L131 LiptonReduction]: Checked pairs total: 4368 [2021-10-08 18:15:02,959 INFO L133 LiptonReduction]: Total number of compositions: 128 [2021-10-08 18:15:02,976 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 51 transitions, 134 flow [2021-10-08 18:15:03,038 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:15:03,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:03,051 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:15:03,051 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash 549, now seen corresponding path program 1 times [2021-10-08 18:15:03,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:03,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890523594] [2021-10-08 18:15:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:03,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:03,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:03,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:15:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:03,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:15:03,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:03,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:03,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:03,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890523594] [2021-10-08 18:15:03,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890523594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:03,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:03,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:15:03,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788661239] [2021-10-08 18:15:03,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:15:03,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:15:03,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:15:03,226 INFO L87 Difference]: Start difference. First operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:03,287 INFO L93 Difference]: Finished difference Result 640 states and 2671 transitions. [2021-10-08 18:15:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:15:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 18:15:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:03,319 INFO L225 Difference]: With dead ends: 640 [2021-10-08 18:15:03,320 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 18:15:03,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:15:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 18:15:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-08 18:15:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 625 states have (on average 4.2736) internal successors, (2671), 639 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2671 transitions. [2021-10-08 18:15:03,490 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2671 transitions. Word has length 1 [2021-10-08 18:15:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:03,495 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2671 transitions. [2021-10-08 18:15:03,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2671 transitions. [2021-10-08 18:15:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:15:03,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:03,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:15:03,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:03,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:03,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:03,703 INFO L82 PathProgramCache]: Analyzing trace with hash 538933, now seen corresponding path program 1 times [2021-10-08 18:15:03,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:03,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957434841] [2021-10-08 18:15:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:03,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:03,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:03,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:15:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:03,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:15:03,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:03,998 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:15:03,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-08 18:15:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:04,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:04,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:04,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957434841] [2021-10-08 18:15:04,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957434841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:04,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:04,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:15:04,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98337053] [2021-10-08 18:15:04,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:04,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:04,287 INFO L87 Difference]: Start difference. First operand 640 states and 2671 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:04,387 INFO L93 Difference]: Finished difference Result 610 states and 2557 transitions. [2021-10-08 18:15:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:15:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:04,399 INFO L225 Difference]: With dead ends: 610 [2021-10-08 18:15:04,400 INFO L226 Difference]: Without dead ends: 610 [2021-10-08 18:15:04,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-08 18:15:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-10-08 18:15:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 597 states have (on average 4.283082077051926) internal successors, (2557), 609 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2557 transitions. [2021-10-08 18:15:04,446 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2557 transitions. Word has length 3 [2021-10-08 18:15:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:04,447 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 2557 transitions. [2021-10-08 18:15:04,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2557 transitions. [2021-10-08 18:15:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:15:04,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:04,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:15:04,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:04,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:04,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:04,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:04,676 INFO L82 PathProgramCache]: Analyzing trace with hash 538934, now seen corresponding path program 1 times [2021-10-08 18:15:04,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:04,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768643587] [2021-10-08 18:15:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:04,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:04,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:04,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:15:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:15:04,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:05,045 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 18:15:05,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 75 [2021-10-08 18:15:05,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-10-08 18:15:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:05,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:05,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:05,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768643587] [2021-10-08 18:15:05,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768643587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:05,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:05,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:15:05,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977684273] [2021-10-08 18:15:05,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:05,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:05,367 INFO L87 Difference]: Start difference. First operand 610 states and 2557 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:05,456 INFO L93 Difference]: Finished difference Result 580 states and 2443 transitions. [2021-10-08 18:15:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:05,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:15:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:05,465 INFO L225 Difference]: With dead ends: 580 [2021-10-08 18:15:05,465 INFO L226 Difference]: Without dead ends: 580 [2021-10-08 18:15:05,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-08 18:15:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-10-08 18:15:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 569 states have (on average 4.293497363796134) internal successors, (2443), 579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2443 transitions. [2021-10-08 18:15:05,502 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2443 transitions. Word has length 3 [2021-10-08 18:15:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:05,502 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2443 transitions. [2021-10-08 18:15:05,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2443 transitions. [2021-10-08 18:15:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:15:05,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:05,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:15:05,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:05,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:05,717 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash 517926084, now seen corresponding path program 1 times [2021-10-08 18:15:05,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:05,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919160964] [2021-10-08 18:15:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:05,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:05,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:05,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:15:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:15:05,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:06,031 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 18:15:06,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 18:15:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:06,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:06,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:06,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919160964] [2021-10-08 18:15:06,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919160964] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:06,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:06,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:15:06,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936934054] [2021-10-08 18:15:06,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:06,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:06,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:06,212 INFO L87 Difference]: Start difference. First operand 580 states and 2443 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:06,266 INFO L93 Difference]: Finished difference Result 562 states and 2389 transitions. [2021-10-08 18:15:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:06,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:15:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:06,274 INFO L225 Difference]: With dead ends: 562 [2021-10-08 18:15:06,274 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 18:15:06,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:06,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 18:15:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-08 18:15:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 553 states have (on average 4.320072332730561) internal successors, (2389), 561 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 2389 transitions. [2021-10-08 18:15:06,305 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 2389 transitions. Word has length 5 [2021-10-08 18:15:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:06,305 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 2389 transitions. [2021-10-08 18:15:06,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 2389 transitions. [2021-10-08 18:15:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:15:06,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:06,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:15:06,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:06,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:06,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 517926085, now seen corresponding path program 1 times [2021-10-08 18:15:06,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:06,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057280727] [2021-10-08 18:15:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:06,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:06,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:06,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:15:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:06,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:15:06,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:06,723 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:15:06,723 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:15:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:06,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:06,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:06,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057280727] [2021-10-08 18:15:06,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057280727] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:06,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:06,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:15:06,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793841017] [2021-10-08 18:15:06,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:15:06,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:15:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:15:06,788 INFO L87 Difference]: Start difference. First operand 562 states and 2389 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:06,842 INFO L93 Difference]: Finished difference Result 544 states and 2335 transitions. [2021-10-08 18:15:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:15:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:06,851 INFO L225 Difference]: With dead ends: 544 [2021-10-08 18:15:06,852 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 18:15:06,852 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 [2021-10-08 18:15:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 18:15:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-10-08 18:15:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 4.348230912476723) internal successors, (2335), 543 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2335 transitions. [2021-10-08 18:15:06,882 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2335 transitions. Word has length 5 [2021-10-08 18:15:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:06,883 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2335 transitions. [2021-10-08 18:15:06,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2335 transitions. [2021-10-08 18:15:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:15:06,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:06,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:06,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:07,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:07,099 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:07,099 INFO L82 PathProgramCache]: Analyzing trace with hash -489228200, now seen corresponding path program 1 times [2021-10-08 18:15:07,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:07,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151369143] [2021-10-08 18:15:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:07,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:07,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:07,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:15:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:07,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:15:07,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:07,412 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 18:15:07,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 18:15:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:07,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:07,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:07,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151369143] [2021-10-08 18:15:07,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151369143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:07,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:07,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:15:07,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470769588] [2021-10-08 18:15:07,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:07,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:07,658 INFO L87 Difference]: Start difference. First operand 544 states and 2335 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:07,710 INFO L93 Difference]: Finished difference Result 514 states and 2221 transitions. [2021-10-08 18:15:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 18:15:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:07,717 INFO L225 Difference]: With dead ends: 514 [2021-10-08 18:15:07,717 INFO L226 Difference]: Without dead ends: 514 [2021-10-08 18:15:07,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-08 18:15:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-10-08 18:15:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 4.363457760314342) internal successors, (2221), 513 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 2221 transitions. [2021-10-08 18:15:07,747 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 2221 transitions. Word has length 7 [2021-10-08 18:15:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:07,747 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 2221 transitions. [2021-10-08 18:15:07,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 2221 transitions. [2021-10-08 18:15:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:15:07,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:07,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:07,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:07,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:07,965 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:07,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:07,966 INFO L82 PathProgramCache]: Analyzing trace with hash -489228199, now seen corresponding path program 1 times [2021-10-08 18:15:07,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:07,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036880094] [2021-10-08 18:15:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:07,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:07,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:07,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:07,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:15:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:08,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:15:08,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:08,097 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:15:08,098 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:15:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:08,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:08,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:08,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036880094] [2021-10-08 18:15:08,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036880094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:08,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:08,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:15:08,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612782964] [2021-10-08 18:15:08,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:15:08,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:15:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:15:08,162 INFO L87 Difference]: Start difference. First operand 514 states and 2221 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) [2021-10-08 18:15:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:08,202 INFO L93 Difference]: Finished difference Result 484 states and 2107 transitions. [2021-10-08 18:15:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:08,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 18:15:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:08,208 INFO L225 Difference]: With dead ends: 484 [2021-10-08 18:15:08,209 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 18:15:08,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:15:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 18:15:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-08 18:15:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 4.38045738045738) internal successors, (2107), 483 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 2107 transitions. [2021-10-08 18:15:08,234 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 2107 transitions. Word has length 7 [2021-10-08 18:15:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:08,235 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 2107 transitions. [2021-10-08 18:15:08,235 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) [2021-10-08 18:15:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 2107 transitions. [2021-10-08 18:15:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:15:08,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:08,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:08,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:08,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:08,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1996853424, now seen corresponding path program 1 times [2021-10-08 18:15:08,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:08,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912794020] [2021-10-08 18:15:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:08,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:08,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:08,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:15:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:08,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:08,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:08,836 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 18:15:08,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 72 [2021-10-08 18:15:08,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2021-10-08 18:15:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:09,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:09,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:09,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912794020] [2021-10-08 18:15:09,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912794020] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:09,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:09,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 18:15:09,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482895699] [2021-10-08 18:15:09,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:15:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:15:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:15:09,424 INFO L87 Difference]: Start difference. First operand 484 states and 2107 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:09,485 INFO L93 Difference]: Finished difference Result 403 states and 1702 transitions. [2021-10-08 18:15:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:09,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 18:15:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:09,491 INFO L225 Difference]: With dead ends: 403 [2021-10-08 18:15:09,491 INFO L226 Difference]: Without dead ends: 403 [2021-10-08 18:15:09,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:15:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-08 18:15:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-08 18:15:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 4.2443890274314215) internal successors, (1702), 402 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1702 transitions. [2021-10-08 18:15:09,513 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1702 transitions. Word has length 9 [2021-10-08 18:15:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:09,513 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1702 transitions. [2021-10-08 18:15:09,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1702 transitions. [2021-10-08 18:15:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:15:09,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:09,515 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:09,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:09,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:09,734 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1996853422, now seen corresponding path program 1 times [2021-10-08 18:15:09,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:09,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517781584] [2021-10-08 18:15:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:09,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:09,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:09,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:09,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:15:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:09,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:15:09,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:09,899 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 18:15:09,900 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 18:15:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:10,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:10,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:10,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517781584] [2021-10-08 18:15:10,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517781584] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:10,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:10,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:15:10,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417857607] [2021-10-08 18:15:10,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:15:10,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:15:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:15:10,089 INFO L87 Difference]: Start difference. First operand 403 states and 1702 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:10,139 INFO L93 Difference]: Finished difference Result 322 states and 1297 transitions. [2021-10-08 18:15:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 18:15:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:10,144 INFO L225 Difference]: With dead ends: 322 [2021-10-08 18:15:10,144 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 18:15:10,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:15:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 18:15:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-08 18:15:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1297 transitions. [2021-10-08 18:15:10,159 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1297 transitions. Word has length 9 [2021-10-08 18:15:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:10,159 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1297 transitions. [2021-10-08 18:15:10,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1297 transitions. [2021-10-08 18:15:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:15:10,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:10,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:10,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:10,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:10,366 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1733900444, now seen corresponding path program 1 times [2021-10-08 18:15:10,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:10,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878909671] [2021-10-08 18:15:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:10,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:10,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:10,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:15:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:10,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:10,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:10,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:10,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:10,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878909671] [2021-10-08 18:15:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878909671] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:10,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:10,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:15:10,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631325512] [2021-10-08 18:15:10,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:15:10,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:15:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:15:10,621 INFO L87 Difference]: Start difference. First operand 322 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:10,658 INFO L93 Difference]: Finished difference Result 641 states and 2591 transitions. [2021-10-08 18:15:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:15:10,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 18:15:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:10,666 INFO L225 Difference]: With dead ends: 641 [2021-10-08 18:15:10,667 INFO L226 Difference]: Without dead ends: 632 [2021-10-08 18:15:10,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:15:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-08 18:15:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 402. [2021-10-08 18:15:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 4.00498753117207) internal successors, (1606), 401 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1606 transitions. [2021-10-08 18:15:10,693 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1606 transitions. Word has length 21 [2021-10-08 18:15:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:10,693 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1606 transitions. [2021-10-08 18:15:10,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1606 transitions. [2021-10-08 18:15:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:15:10,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:10,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:10,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:10,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:10,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:10,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1870636770, now seen corresponding path program 1 times [2021-10-08 18:15:10,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:10,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483352075] [2021-10-08 18:15:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:10,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:10,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:10,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:15:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:11,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:15:11,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:11,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:11,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:11,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483352075] [2021-10-08 18:15:11,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483352075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:11,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:11,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 18:15:11,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151565547] [2021-10-08 18:15:11,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:11,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:11,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:11,122 INFO L87 Difference]: Start difference. First operand 402 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:11,202 INFO L93 Difference]: Finished difference Result 428 states and 1625 transitions. [2021-10-08 18:15:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:15:11,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:15:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:11,211 INFO L225 Difference]: With dead ends: 428 [2021-10-08 18:15:11,211 INFO L226 Difference]: Without dead ends: 424 [2021-10-08 18:15:11,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:15:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-08 18:15:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-10-08 18:15:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.810874704491726) internal successors, (1612), 423 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1612 transitions. [2021-10-08 18:15:11,235 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1612 transitions. Word has length 23 [2021-10-08 18:15:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:11,235 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1612 transitions. [2021-10-08 18:15:11,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1612 transitions. [2021-10-08 18:15:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:15:11,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:11,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:11,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:11,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:11,452 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1635574974, now seen corresponding path program 1 times [2021-10-08 18:15:11,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:11,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136101097] [2021-10-08 18:15:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:11,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:11,455 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:11,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:15:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:15:11,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:11,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:11,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:11,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136101097] [2021-10-08 18:15:11,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136101097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:11,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:11,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 18:15:11,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524050861] [2021-10-08 18:15:11,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:15:11,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:15:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:15:11,743 INFO L87 Difference]: Start difference. First operand 424 states and 1612 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:11,900 INFO L93 Difference]: Finished difference Result 920 states and 3292 transitions. [2021-10-08 18:15:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:15:11,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:15:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:11,909 INFO L225 Difference]: With dead ends: 920 [2021-10-08 18:15:11,910 INFO L226 Difference]: Without dead ends: 862 [2021-10-08 18:15:11,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:15:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-10-08 18:15:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 586. [2021-10-08 18:15:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.8615384615384616) internal successors, (2259), 585 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 2259 transitions. [2021-10-08 18:15:11,941 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 2259 transitions. Word has length 23 [2021-10-08 18:15:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:11,942 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 2259 transitions. [2021-10-08 18:15:11,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 2259 transitions. [2021-10-08 18:15:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:15:11,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:11,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:11,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:12,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:12,157 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1175243170, now seen corresponding path program 1 times [2021-10-08 18:15:12,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:12,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195658052] [2021-10-08 18:15:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:12,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:12,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:15:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:12,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:12,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:12,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195658052] [2021-10-08 18:15:12,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195658052] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:15:12,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:15:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-08 18:15:12,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805931805] [2021-10-08 18:15:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:15:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:15:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:15:12,492 INFO L87 Difference]: Start difference. First operand 586 states and 2259 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:12,565 INFO L93 Difference]: Finished difference Result 1022 states and 3712 transitions. [2021-10-08 18:15:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:15:12,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:15:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:12,575 INFO L225 Difference]: With dead ends: 1022 [2021-10-08 18:15:12,576 INFO L226 Difference]: Without dead ends: 982 [2021-10-08 18:15:12,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:15:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-10-08 18:15:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 642. [2021-10-08 18:15:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.8377535101404057) internal successors, (2460), 641 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2460 transitions. [2021-10-08 18:15:12,612 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2460 transitions. Word has length 23 [2021-10-08 18:15:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:12,612 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2460 transitions. [2021-10-08 18:15:12,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2460 transitions. [2021-10-08 18:15:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:15:12,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:12,616 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:12,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-08 18:15:12,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:12,828 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash -148548004, now seen corresponding path program 2 times [2021-10-08 18:15:12,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:12,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532348068] [2021-10-08 18:15:12,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:12,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:12,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:12,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:15:13,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:13,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:13,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:13,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:13,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:13,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:13,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532348068] [2021-10-08 18:15:13,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532348068] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:15:13,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:13,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-10-08 18:15:13,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22168955] [2021-10-08 18:15:13,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:15:13,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:15:13,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:15:13,243 INFO L87 Difference]: Start difference. First operand 642 states and 2460 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:13,467 INFO L93 Difference]: Finished difference Result 904 states and 3373 transitions. [2021-10-08 18:15:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:15:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:15:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:13,476 INFO L225 Difference]: With dead ends: 904 [2021-10-08 18:15:13,477 INFO L226 Difference]: Without dead ends: 904 [2021-10-08 18:15:13,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:15:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-10-08 18:15:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 660. [2021-10-08 18:15:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.9013657056145674) internal successors, (2571), 659 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2571 transitions. [2021-10-08 18:15:13,507 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2571 transitions. Word has length 23 [2021-10-08 18:15:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:13,507 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2571 transitions. [2021-10-08 18:15:13,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2571 transitions. [2021-10-08 18:15:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:13,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:13,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:13,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 18:15:13,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:13,727 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1972271616, now seen corresponding path program 1 times [2021-10-08 18:15:13,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:13,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399029305] [2021-10-08 18:15:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:13,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:13,731 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:13,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:15:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:13,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:13,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:14,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:14,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:14,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399029305] [2021-10-08 18:15:14,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399029305] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:14,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:14,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-08 18:15:14,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549785804] [2021-10-08 18:15:14,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:14,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:14,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:14,502 INFO L87 Difference]: Start difference. First operand 660 states and 2571 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:15,478 INFO L93 Difference]: Finished difference Result 2271 states and 8908 transitions. [2021-10-08 18:15:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:15:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:15,501 INFO L225 Difference]: With dead ends: 2271 [2021-10-08 18:15:15,501 INFO L226 Difference]: Without dead ends: 2222 [2021-10-08 18:15:15,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 295.4ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:15:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-10-08 18:15:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1204. [2021-10-08 18:15:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 4.221945137157107) internal successors, (5079), 1203 states have internal predecessors, (5079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 5079 transitions. [2021-10-08 18:15:15,567 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 5079 transitions. Word has length 25 [2021-10-08 18:15:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:15,568 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 5079 transitions. [2021-10-08 18:15:15,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 5079 transitions. [2021-10-08 18:15:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:15,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:15,575 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:15,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:15,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:15,788 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -276663328, now seen corresponding path program 1 times [2021-10-08 18:15:15,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:15,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889080523] [2021-10-08 18:15:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:15,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:15,792 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:15,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:15:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:15,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:15:15,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:16,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:16,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:16,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889080523] [2021-10-08 18:15:16,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889080523] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:16,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:16,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-10-08 18:15:16,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588003152] [2021-10-08 18:15:16,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:15:16,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:15:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:15:16,626 INFO L87 Difference]: Start difference. First operand 1204 states and 5079 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:17,983 INFO L93 Difference]: Finished difference Result 3646 states and 14809 transitions. [2021-10-08 18:15:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:15:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:18,019 INFO L225 Difference]: With dead ends: 3646 [2021-10-08 18:15:18,020 INFO L226 Difference]: Without dead ends: 3646 [2021-10-08 18:15:18,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 662.9ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:15:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2021-10-08 18:15:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 2170. [2021-10-08 18:15:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2169 states have (on average 4.325495620101429) internal successors, (9382), 2169 states have internal predecessors, (9382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 9382 transitions. [2021-10-08 18:15:18,151 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 9382 transitions. Word has length 25 [2021-10-08 18:15:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:18,152 INFO L470 AbstractCegarLoop]: Abstraction has 2170 states and 9382 transitions. [2021-10-08 18:15:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 9382 transitions. [2021-10-08 18:15:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:18,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:18,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:18,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:18,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:18,374 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:18,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1067818754, now seen corresponding path program 2 times [2021-10-08 18:15:18,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:18,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017650757] [2021-10-08 18:15:18,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:18,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:18,377 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:18,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:15:18,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:18,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:18,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:18,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:18,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:19,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:19,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017650757] [2021-10-08 18:15:19,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017650757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:19,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:19,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:15:19,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036867659] [2021-10-08 18:15:19,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:15:19,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:15:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:15:19,295 INFO L87 Difference]: Start difference. First operand 2170 states and 9382 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:20,623 INFO L93 Difference]: Finished difference Result 5852 states and 23453 transitions. [2021-10-08 18:15:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 18:15:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:20,658 INFO L225 Difference]: With dead ends: 5852 [2021-10-08 18:15:20,658 INFO L226 Difference]: Without dead ends: 5852 [2021-10-08 18:15:20,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 619.7ms TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:15:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-10-08 18:15:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 2902. [2021-10-08 18:15:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2901 states have (on average 4.42778352292313) internal successors, (12845), 2901 states have internal predecessors, (12845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 12845 transitions. [2021-10-08 18:15:20,872 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 12845 transitions. Word has length 25 [2021-10-08 18:15:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:20,873 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 12845 transitions. [2021-10-08 18:15:20,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 12845 transitions. [2021-10-08 18:15:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:20,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:20,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:20,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:21,099 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -794865584, now seen corresponding path program 2 times [2021-10-08 18:15:21,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:21,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515342909] [2021-10-08 18:15:21,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:21,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:21,103 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:21,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:15:21,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:21,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:21,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:21,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:21,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:22,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:22,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515342909] [2021-10-08 18:15:22,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515342909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:22,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:22,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:15:22,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226323610] [2021-10-08 18:15:22,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:15:22,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:15:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:15:22,172 INFO L87 Difference]: Start difference. First operand 2902 states and 12845 transitions. Second operand has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:26,320 INFO L93 Difference]: Finished difference Result 4989 states and 20560 transitions. [2021-10-08 18:15:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:15:26,320 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:26,347 INFO L225 Difference]: With dead ends: 4989 [2021-10-08 18:15:26,347 INFO L226 Difference]: Without dead ends: 4742 [2021-10-08 18:15:26,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 558.2ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:15:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2021-10-08 18:15:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 3232. [2021-10-08 18:15:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 3231 states have (on average 4.468276075518415) internal successors, (14437), 3231 states have internal predecessors, (14437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 14437 transitions. [2021-10-08 18:15:26,526 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 14437 transitions. Word has length 25 [2021-10-08 18:15:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:26,526 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 14437 transitions. [2021-10-08 18:15:26,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 14437 transitions. [2021-10-08 18:15:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:26,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:26,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:26,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:26,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:26,754 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:26,755 INFO L82 PathProgramCache]: Analyzing trace with hash 569912766, now seen corresponding path program 3 times [2021-10-08 18:15:26,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:26,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251304658] [2021-10-08 18:15:26,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:15:26,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:26,758 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:26,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:15:27,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:15:27,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:27,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:27,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:27,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:28,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:28,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251304658] [2021-10-08 18:15:28,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251304658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:28,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:28,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-08 18:15:28,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597451392] [2021-10-08 18:15:28,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:15:28,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:15:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:15:28,062 INFO L87 Difference]: Start difference. First operand 3232 states and 14437 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:30,055 INFO L93 Difference]: Finished difference Result 7794 states and 31825 transitions. [2021-10-08 18:15:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:15:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:30,100 INFO L225 Difference]: With dead ends: 7794 [2021-10-08 18:15:30,100 INFO L226 Difference]: Without dead ends: 7782 [2021-10-08 18:15:30,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1028.4ms TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:15:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2021-10-08 18:15:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 3740. [2021-10-08 18:15:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 3739 states have (on average 4.510296870821075) internal successors, (16864), 3739 states have internal predecessors, (16864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 16864 transitions. [2021-10-08 18:15:30,344 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 16864 transitions. Word has length 25 [2021-10-08 18:15:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:30,344 INFO L470 AbstractCegarLoop]: Abstraction has 3740 states and 16864 transitions. [2021-10-08 18:15:30,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 16864 transitions. [2021-10-08 18:15:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:30,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:30,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:30,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-08 18:15:30,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:30,575 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1964668042, now seen corresponding path program 4 times [2021-10-08 18:15:30,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:30,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025850194] [2021-10-08 18:15:30,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:15:30,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:30,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:30,578 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:30,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:15:30,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:15:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:15:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:31,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:31,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:31,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025850194] [2021-10-08 18:15:31,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025850194] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:31,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:31,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 18:15:31,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472666605] [2021-10-08 18:15:31,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:15:31,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:15:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:15:31,561 INFO L87 Difference]: Start difference. First operand 3740 states and 16864 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:32,700 INFO L93 Difference]: Finished difference Result 7894 states and 32687 transitions. [2021-10-08 18:15:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:15:32,701 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:32,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:32,748 INFO L225 Difference]: With dead ends: 7894 [2021-10-08 18:15:32,748 INFO L226 Difference]: Without dead ends: 7812 [2021-10-08 18:15:32,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 552.0ms TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:15:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7812 states. [2021-10-08 18:15:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7812 to 4864. [2021-10-08 18:15:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4864 states, 4863 states have (on average 4.54287476866132) internal successors, (22092), 4863 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4864 states to 4864 states and 22092 transitions. [2021-10-08 18:15:33,045 INFO L78 Accepts]: Start accepts. Automaton has 4864 states and 22092 transitions. Word has length 25 [2021-10-08 18:15:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:33,047 INFO L470 AbstractCegarLoop]: Abstraction has 4864 states and 22092 transitions. [2021-10-08 18:15:33,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4864 states and 22092 transitions. [2021-10-08 18:15:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:33,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:33,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:33,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:33,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:33,287 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1374126012, now seen corresponding path program 1 times [2021-10-08 18:15:33,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:33,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038675270] [2021-10-08 18:15:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:33,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:33,290 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:33,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:15:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:33,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:15:33,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:33,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:34,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:34,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038675270] [2021-10-08 18:15:34,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038675270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:34,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:34,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 18:15:34,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381379179] [2021-10-08 18:15:34,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:15:34,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:15:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:15:34,336 INFO L87 Difference]: Start difference. First operand 4864 states and 22092 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:35,535 INFO L93 Difference]: Finished difference Result 8918 states and 37998 transitions. [2021-10-08 18:15:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 18:15:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 18:15:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:35,582 INFO L225 Difference]: With dead ends: 8918 [2021-10-08 18:15:35,583 INFO L226 Difference]: Without dead ends: 8906 [2021-10-08 18:15:35,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 739.5ms TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:15:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2021-10-08 18:15:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5320. [2021-10-08 18:15:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 4.51118631321677) internal successors, (23995), 5319 states have internal predecessors, (23995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 23995 transitions. [2021-10-08 18:15:35,910 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 23995 transitions. Word has length 25 [2021-10-08 18:15:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:35,912 INFO L470 AbstractCegarLoop]: Abstraction has 5320 states and 23995 transitions. [2021-10-08 18:15:35,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 23995 transitions. [2021-10-08 18:15:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:15:36,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:36,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:36,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:36,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:36,282 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:15:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:36,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1225232996, now seen corresponding path program 1 times [2021-10-08 18:15:36,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:36,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982758370] [2021-10-08 18:15:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:36,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:36,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:36,285 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:36,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:15:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:15:36,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:36,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:37,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:37,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982758370] [2021-10-08 18:15:37,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-08 18:15:37,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1876105264] [2021-10-08 18:15:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:37,027 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 18:15:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 18:15:37,029 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-08 18:15:37,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-08 18:15:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:37,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:37,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:38,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-08 18:15:38,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289882104] [2021-10-08 18:15:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:15:38,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 18:15:38,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:15:38,011 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 18:15:38,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 18:15:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:15:38,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:38,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:38,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-08 18:15:38,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:15:38,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-08 18:15:38,789 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-08 18:15:38,789 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-08 18:15:38,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:15:38,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:15:38,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:15:38,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 18:15:38,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 18:15:38,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 18:15:38,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:39,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:39,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:39,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:39,409 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:15:39,410 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:15:39,411 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-08 18:15:39,413 INFO L168 Benchmark]: Toolchain (without parser) took 56033.94 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.5 MB in the beginning and 166.3 MB in the end (delta: -40.8 MB). Peak memory consumption was 123.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,414 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 121.6 MB in the end (delta: 96.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:15:39,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 113.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,415 INFO L168 Benchmark]: Boogie Preprocessor took 38.16 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,416 INFO L168 Benchmark]: RCFGBuilder took 778.75 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 129.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,416 INFO L168 Benchmark]: TraceAbstraction took 54843.19 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 128.6 MB in the beginning and 166.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 125.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:15:39,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 121.6 MB in the end (delta: 96.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 113.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.16 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 778.75 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 129.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 54843.19 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 128.6 MB in the beginning and 166.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 125.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18154.4ms, 140 PlacesBefore, 60 PlacesAfterwards, 137 TransitionsBefore, 51 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 128 TotalNumberOfCompositions, 4368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3872, positive: 3800, positive conditional: 0, positive unconditional: 3800, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1123, positive: 1119, positive conditional: 0, positive unconditional: 1119, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1123, positive: 1111, positive conditional: 0, positive unconditional: 1111, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3872, positive: 2681, positive conditional: 0, positive unconditional: 2681, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 1123, unknown conditional: 0, unknown unconditional: 1123] , Statistics on independence cache: Total cache size (in pairs): 280, Positive cache size: 276, Positive conditional cache size: 0, Positive unconditional cache size: 276, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-08 18:15:39,464 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...