/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench/exp3x3-opt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:12:44,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:12:44,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:12:44,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 21:12:44,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 21:12:44,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 21:12:44,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 21:12:44,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 21:12:44,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 21:12:44,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 21:12:44,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 21:12:44,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 21:12:44,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:12:44,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:12:44,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:12:44,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:12:44,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:12:44,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:12:44,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:12:44,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:12:44,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:12:44,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:12:44,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:12:44,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:12:44,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 21:12:44,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 21:12:44,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 21:12:44,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 21:12:44,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 21:12:44,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 21:12:44,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:12:44,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:12:44,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:12:44,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:12:44,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:12:44,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:12:44,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:12:44,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:12:44,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:12:44,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:12:44,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:12:44,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:12:44,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:12:44,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:12:44,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:12:44,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:12:44,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:12:44,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:12:44,711 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:12:44,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:12:44,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:12:44,711 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:12:44,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:12:44,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:12:44,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:12:44,713 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:12:44,713 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:12:44,714 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:12:44,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:12:44,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:12:44,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:12:44,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:12:44,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:12:44,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:12:44,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:12:44,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:12:44,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:12:44,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:12:44,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:12:44,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:12:44,716 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:12:44,716 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:12:44,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:12:44,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:12:44,717 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:12:45,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:12:45,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:12:45,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:12:45,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:12:45,177 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:12:45,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench/exp3x3-opt.wvr.c [2021-10-06 21:12:45,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047edd5d5/b73729880373444298aff3d2090db441/FLAGb14141018 [2021-10-06 21:12:45,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:12:45,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp3x3-opt.wvr.c [2021-10-06 21:12:45,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047edd5d5/b73729880373444298aff3d2090db441/FLAGb14141018 [2021-10-06 21:12:46,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/047edd5d5/b73729880373444298aff3d2090db441 [2021-10-06 21:12:46,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:12:46,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:12:46,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:12:46,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:12:46,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:12:46,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f3a288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46, skipping insertion in model container [2021-10-06 21:12:46,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:12:46,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:12:46,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp3x3-opt.wvr.c[3477,3490] [2021-10-06 21:12:46,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:12:46,503 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:12:46,537 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp3x3-opt.wvr.c[3477,3490] [2021-10-06 21:12:46,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:12:46,559 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:12:46,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46 WrapperNode [2021-10-06 21:12:46,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:12:46,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:12:46,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:12:46,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:12:46,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:12:46,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:12:46,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:12:46,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:12:46,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:12:46,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:12:46,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:12:46,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:12:46,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (1/1) ... [2021-10-06 21:12:46,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:12:46,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:12:46,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:12:46,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:12:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:12:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:12:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:12:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:12:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:12:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:12:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:12:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:12:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:12:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 21:12:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 21:12:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-10-06 21:12:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-10-06 21:12:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-10-06 21:12:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-10-06 21:12:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:12:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:12:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:12:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:12:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:12:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:12:46,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:12:47,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:12:47,760 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-06 21:12:47,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:12:47 BoogieIcfgContainer [2021-10-06 21:12:47,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:12:47,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:12:47,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:12:47,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:12:47,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:12:46" (1/3) ... [2021-10-06 21:12:47,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c838d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:12:47, skipping insertion in model container [2021-10-06 21:12:47,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:12:46" (2/3) ... [2021-10-06 21:12:47,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c838d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:12:47, skipping insertion in model container [2021-10-06 21:12:47,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:12:47" (3/3) ... [2021-10-06 21:12:47,775 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3-opt.wvr.c [2021-10-06 21:12:47,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:12:47,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-06 21:12:47,782 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:12:47,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,874 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,875 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,881 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,881 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,881 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,888 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,891 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,891 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,891 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,892 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,892 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,892 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,892 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,895 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,895 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,896 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,896 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,896 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,896 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,897 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,897 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,897 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,897 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,898 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,898 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,898 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,899 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,899 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,899 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,899 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,900 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,900 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,900 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,900 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,900 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,901 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,901 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,901 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,901 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,902 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,902 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,902 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,902 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,903 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,903 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,903 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,903 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,904 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,904 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,904 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,904 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,904 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,905 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,905 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,905 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,906 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,906 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,906 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,906 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,906 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,907 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,907 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,907 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,907 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,907 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,908 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,908 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,908 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,908 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,908 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,909 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,912 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,915 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,916 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,918 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,919 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,919 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,919 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,919 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,921 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,922 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,924 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,925 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,925 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,925 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,925 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,928 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,928 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,929 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,929 WARN L313 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,929 WARN L313 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:12:47,943 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-10-06 21:12:48,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:12:48,009 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:12:48,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-06 21:12:48,030 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:12:48,044 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 198 transitions, 444 flow [2021-10-06 21:12:48,047 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 198 transitions, 444 flow [2021-10-06 21:12:48,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 198 transitions, 444 flow [2021-10-06 21:12:48,137 INFO L129 PetriNetUnfolder]: 14/192 cut-off events. [2021-10-06 21:12:48,140 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-06 21:12:48,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 192 events. 14/192 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2021-10-06 21:12:48,155 INFO L116 LiptonReduction]: Number of co-enabled transitions 5520 [2021-10-06 21:13:14,592 INFO L131 LiptonReduction]: Checked pairs total: 6663 [2021-10-06 21:13:14,592 INFO L133 LiptonReduction]: Total number of compositions: 196 [2021-10-06 21:13:14,603 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 69 transitions, 186 flow [2021-10-06 21:13:14,686 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:13:14,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:14,699 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:13:14,700 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:13:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash 829, now seen corresponding path program 1 times [2021-10-06 21:13:14,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:14,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54678190] [2021-10-06 21:13:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:14,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:14,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:14,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:13:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:14,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:13:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:14,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:14,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:14,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54678190] [2021-10-06 21:13:14,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54678190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:14,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:14,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:13:14,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717585721] [2021-10-06 21:13:14,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:13:14,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:13:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:13:14,845 INFO L87 Difference]: Start difference. First operand has 759 states, 733 states have (on average 5.8594815825375175) internal successors, (4295), 758 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:14,913 INFO L93 Difference]: Finished difference Result 756 states and 4292 transitions. [2021-10-06 21:13:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:13:14,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:13:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:14,974 INFO L225 Difference]: With dead ends: 756 [2021-10-06 21:13:14,974 INFO L226 Difference]: Without dead ends: 756 [2021-10-06 21:13:14,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:13:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-06 21:13:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-10-06 21:13:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 733 states have (on average 5.855388813096862) internal successors, (4292), 755 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 4292 transitions. [2021-10-06 21:13:15,134 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 4292 transitions. Word has length 1 [2021-10-06 21:13:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:15,135 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 4292 transitions. [2021-10-06 21:13:15,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 4292 transitions. [2021-10-06 21:13:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:13:15,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:15,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:13:15,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:13:15,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:15,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:13:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash 814662, now seen corresponding path program 1 times [2021-10-06 21:13:15,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:15,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346581572] [2021-10-06 21:13:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:15,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:15,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:15,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:13:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:13:15,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:16,454 INFO L354 Elim1Store]: treesize reduction 516, result has 10.3 percent of original size [2021-10-06 21:13:16,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 105 treesize of output 141 [2021-10-06 21:13:16,502 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-06 21:13:16,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 880 treesize of output 858 [2021-10-06 21:13:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:20,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:20,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:20,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346581572] [2021-10-06 21:13:20,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346581572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:20,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:20,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:13:20,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859791887] [2021-10-06 21:13:20,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:13:20,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:13:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:20,295 INFO L87 Difference]: Start difference. First operand 756 states and 4292 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:20,685 INFO L93 Difference]: Finished difference Result 722 states and 4096 transitions. [2021-10-06 21:13:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:13:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:20,698 INFO L225 Difference]: With dead ends: 722 [2021-10-06 21:13:20,699 INFO L226 Difference]: Without dead ends: 722 [2021-10-06 21:13:20,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-06 21:13:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-10-06 21:13:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 701 states have (on average 5.843081312410842) internal successors, (4096), 721 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 4096 transitions. [2021-10-06 21:13:20,750 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 4096 transitions. Word has length 3 [2021-10-06 21:13:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 4096 transitions. [2021-10-06 21:13:20,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 4096 transitions. [2021-10-06 21:13:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:13:20,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:20,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:13:20,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:20,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:20,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:13:20,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash 814664, now seen corresponding path program 1 times [2021-10-06 21:13:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:20,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092469137] [2021-10-06 21:13:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:20,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:20,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:13:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:13:21,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:21,634 INFO L354 Elim1Store]: treesize reduction 706, result has 11.0 percent of original size [2021-10-06 21:13:21,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 14 case distinctions, treesize of input 4007 treesize of output 3904 [2021-10-06 21:13:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:41,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:41,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:41,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092469137] [2021-10-06 21:13:41,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092469137] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:41,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:41,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:13:41,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849260627] [2021-10-06 21:13:41,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:13:41,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:13:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:41,877 INFO L87 Difference]: Start difference. First operand 722 states and 4096 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:42,164 INFO L93 Difference]: Finished difference Result 688 states and 3900 transitions. [2021-10-06 21:13:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:42,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:13:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:42,181 INFO L225 Difference]: With dead ends: 688 [2021-10-06 21:13:42,181 INFO L226 Difference]: Without dead ends: 688 [2021-10-06 21:13:42,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-10-06 21:13:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2021-10-06 21:13:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 5.829596412556054) internal successors, (3900), 687 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 3900 transitions. [2021-10-06 21:13:42,240 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 3900 transitions. Word has length 3 [2021-10-06 21:13:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:42,241 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 3900 transitions. [2021-10-06 21:13:42,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 3900 transitions. [2021-10-06 21:13:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:13:42,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:42,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:13:42,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:42,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:13:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash 782910278, now seen corresponding path program 1 times [2021-10-06 21:13:42,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:42,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637975198] [2021-10-06 21:13:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:42,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:42,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:42,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:13:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:42,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:13:42,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:43,140 INFO L354 Elim1Store]: treesize reduction 510, result has 11.3 percent of original size [2021-10-06 21:13:43,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 81 treesize of output 123 [2021-10-06 21:13:43,154 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:13:43,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 219 [2021-10-06 21:13:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:45,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:45,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:45,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637975198] [2021-10-06 21:13:45,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637975198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:45,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:45,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:13:45,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134317567] [2021-10-06 21:13:45,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:13:45,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:13:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:45,993 INFO L87 Difference]: Start difference. First operand 688 states and 3900 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:46,264 INFO L93 Difference]: Finished difference Result 668 states and 3808 transitions. [2021-10-06 21:13:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:13:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:46,275 INFO L225 Difference]: With dead ends: 668 [2021-10-06 21:13:46,276 INFO L226 Difference]: Without dead ends: 668 [2021-10-06 21:13:46,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-06 21:13:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2021-10-06 21:13:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 651 states have (on average 5.849462365591398) internal successors, (3808), 667 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 3808 transitions. [2021-10-06 21:13:46,316 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 3808 transitions. Word has length 5 [2021-10-06 21:13:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:46,316 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 3808 transitions. [2021-10-06 21:13:46,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 3808 transitions. [2021-10-06 21:13:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:13:46,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:46,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:13:46,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:46,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:46,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:13:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 782910277, now seen corresponding path program 1 times [2021-10-06 21:13:46,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:46,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814850848] [2021-10-06 21:13:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:46,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:46,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:46,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:13:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:46,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:13:46,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:47,014 INFO L354 Elim1Store]: treesize reduction 690, result has 11.2 percent of original size [2021-10-06 21:13:47,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 605 treesize of output 630 [2021-10-06 21:14:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:10,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:10,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:10,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814850848] [2021-10-06 21:14:10,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814850848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:10,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:10,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:10,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614911505] [2021-10-06 21:14:10,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:10,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:10,481 INFO L87 Difference]: Start difference. First operand 668 states and 3808 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:10,726 INFO L93 Difference]: Finished difference Result 648 states and 3716 transitions. [2021-10-06 21:14:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:14:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:10,736 INFO L225 Difference]: With dead ends: 648 [2021-10-06 21:14:10,737 INFO L226 Difference]: Without dead ends: 648 [2021-10-06 21:14:10,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-10-06 21:14:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2021-10-06 21:14:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 633 states have (on average 5.8704581358609795) internal successors, (3716), 647 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 3716 transitions. [2021-10-06 21:14:10,772 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 3716 transitions. Word has length 5 [2021-10-06 21:14:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:10,772 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 3716 transitions. [2021-10-06 21:14:10,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 3716 transitions. [2021-10-06 21:14:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:14:10,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:10,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:10,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-06 21:14:10,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:10,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:10,988 INFO L82 PathProgramCache]: Analyzing trace with hash 757520343, now seen corresponding path program 1 times [2021-10-06 21:14:10,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:10,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237496094] [2021-10-06 21:14:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:10,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:10,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:10,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:14:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:11,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:14:11,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:11,435 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-06 21:14:11,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 104 [2021-10-06 21:14:11,444 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 141 treesize of output 139 [2021-10-06 21:14:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:15,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:15,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:15,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237496094] [2021-10-06 21:14:15,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237496094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:15,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:15,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:15,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516376085] [2021-10-06 21:14:15,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:15,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:15,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:15,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:15,643 INFO L87 Difference]: Start difference. First operand 648 states and 3716 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:15,756 INFO L93 Difference]: Finished difference Result 632 states and 3652 transitions. [2021-10-06 21:14:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:14:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:15,770 INFO L225 Difference]: With dead ends: 632 [2021-10-06 21:14:15,770 INFO L226 Difference]: Without dead ends: 632 [2021-10-06 21:14:15,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-06 21:14:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-10-06 21:14:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 619 states have (on average 5.89983844911147) internal successors, (3652), 631 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 3652 transitions. [2021-10-06 21:14:15,812 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 3652 transitions. Word has length 7 [2021-10-06 21:14:15,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:15,813 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 3652 transitions. [2021-10-06 21:14:15,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 3652 transitions. [2021-10-06 21:14:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:14:15,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:15,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:15,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:16,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:16,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 757520345, now seen corresponding path program 1 times [2021-10-06 21:14:16,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:16,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645659091] [2021-10-06 21:14:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:16,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:16,031 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:16,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:14:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:16,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:14:16,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:16,502 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-06 21:14:16,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 96 treesize of output 155 [2021-10-06 21:14:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:34,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:34,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:34,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645659091] [2021-10-06 21:14:34,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645659091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:34,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:34,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:34,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192004456] [2021-10-06 21:14:34,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:34,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:34,088 INFO L87 Difference]: Start difference. First operand 632 states and 3652 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:34,190 INFO L93 Difference]: Finished difference Result 616 states and 3588 transitions. [2021-10-06 21:14:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:34,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:14:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:34,201 INFO L225 Difference]: With dead ends: 616 [2021-10-06 21:14:34,201 INFO L226 Difference]: Without dead ends: 616 [2021-10-06 21:14:34,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-06 21:14:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-10-06 21:14:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 605 states have (on average 5.9305785123966945) internal successors, (3588), 615 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 3588 transitions. [2021-10-06 21:14:34,233 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 3588 transitions. Word has length 7 [2021-10-06 21:14:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:34,233 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 3588 transitions. [2021-10-06 21:14:34,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 3588 transitions. [2021-10-06 21:14:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:14:34,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:34,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:34,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:34,450 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 [2021-10-06 21:14:34,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:34,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2127596768, now seen corresponding path program 1 times [2021-10-06 21:14:34,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:34,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667535943] [2021-10-06 21:14:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:34,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:34,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:34,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:34,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:14:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:34,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:14:34,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:34,971 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-06 21:14:34,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-06 21:14:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:35,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:35,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:35,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667535943] [2021-10-06 21:14:35,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667535943] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:35,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:35,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:14:35,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148156016] [2021-10-06 21:14:35,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:14:35,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:14:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:14:35,960 INFO L87 Difference]: Start difference. First operand 616 states and 3588 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:36,016 INFO L93 Difference]: Finished difference Result 596 states and 3496 transitions. [2021-10-06 21:14:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:14:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:36,026 INFO L225 Difference]: With dead ends: 596 [2021-10-06 21:14:36,026 INFO L226 Difference]: Without dead ends: 596 [2021-10-06 21:14:36,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:14:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-06 21:14:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-10-06 21:14:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 5.955706984667803) internal successors, (3496), 595 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 3496 transitions. [2021-10-06 21:14:36,055 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 3496 transitions. Word has length 9 [2021-10-06 21:14:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:36,056 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 3496 transitions. [2021-10-06 21:14:36,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 3496 transitions. [2021-10-06 21:14:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:14:36,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:36,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:36,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:36,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:36,270 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:36,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2127596769, now seen corresponding path program 1 times [2021-10-06 21:14:36,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:36,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606240127] [2021-10-06 21:14:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:36,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:36,274 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:36,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:14:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:36,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:14:36,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:36,755 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-06 21:14:36,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 58 treesize of output 106 [2021-10-06 21:14:36,766 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 148 treesize of output 146 [2021-10-06 21:14:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:38,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:38,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:38,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606240127] [2021-10-06 21:14:38,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606240127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:38,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:38,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360949984] [2021-10-06 21:14:38,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:38,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:38,228 INFO L87 Difference]: Start difference. First operand 596 states and 3496 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:38,305 INFO L93 Difference]: Finished difference Result 576 states and 3404 transitions. [2021-10-06 21:14:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:14:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:38,316 INFO L225 Difference]: With dead ends: 576 [2021-10-06 21:14:38,316 INFO L226 Difference]: Without dead ends: 576 [2021-10-06 21:14:38,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-06 21:14:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-10-06 21:14:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 569 states have (on average 5.982425307557118) internal successors, (3404), 575 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 3404 transitions. [2021-10-06 21:14:38,345 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 3404 transitions. Word has length 9 [2021-10-06 21:14:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:38,346 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 3404 transitions. [2021-10-06 21:14:38,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 3404 transitions. [2021-10-06 21:14:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:14:38,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:38,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:38,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:38,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:38,564 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash 216079280, now seen corresponding path program 1 times [2021-10-06 21:14:38,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:38,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106097010] [2021-10-06 21:14:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:38,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:38,567 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:38,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:14:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:14:38,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:39,085 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-06 21:14:39,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-06 21:14:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:40,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:40,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:40,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106097010] [2021-10-06 21:14:40,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106097010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:40,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:40,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:14:40,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918626095] [2021-10-06 21:14:40,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:14:40,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:14:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:14:40,086 INFO L87 Difference]: Start difference. First operand 576 states and 3404 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:40,145 INFO L93 Difference]: Finished difference Result 542 states and 3208 transitions. [2021-10-06 21:14:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:14:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:40,153 INFO L225 Difference]: With dead ends: 542 [2021-10-06 21:14:40,154 INFO L226 Difference]: Without dead ends: 542 [2021-10-06 21:14:40,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:14:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-06 21:14:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-10-06 21:14:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 537 states have (on average 5.973929236499069) internal successors, (3208), 541 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 3208 transitions. [2021-10-06 21:14:40,181 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 3208 transitions. Word has length 11 [2021-10-06 21:14:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:40,182 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 3208 transitions. [2021-10-06 21:14:40,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 3208 transitions. [2021-10-06 21:14:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:14:40,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:40,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:40,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:40,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:40,396 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:40,397 INFO L82 PathProgramCache]: Analyzing trace with hash 216079281, now seen corresponding path program 1 times [2021-10-06 21:14:40,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:40,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371545791] [2021-10-06 21:14:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:40,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:40,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:40,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:40,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:14:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:40,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:14:40,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:40,924 INFO L354 Elim1Store]: treesize reduction 498, result has 13.4 percent of original size [2021-10-06 21:14:40,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 82 [2021-10-06 21:14:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:41,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:41,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:41,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371545791] [2021-10-06 21:14:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371545791] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:41,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:41,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:41,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345600224] [2021-10-06 21:14:41,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:41,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:41,198 INFO L87 Difference]: Start difference. First operand 542 states and 3208 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:41,245 INFO L93 Difference]: Finished difference Result 508 states and 3012 transitions. [2021-10-06 21:14:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:14:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:41,253 INFO L225 Difference]: With dead ends: 508 [2021-10-06 21:14:41,253 INFO L226 Difference]: Without dead ends: 508 [2021-10-06 21:14:41,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-06 21:14:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-10-06 21:14:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 5.964356435643564) internal successors, (3012), 507 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 3012 transitions. [2021-10-06 21:14:41,278 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 3012 transitions. Word has length 11 [2021-10-06 21:14:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:41,279 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 3012 transitions. [2021-10-06 21:14:41,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 3012 transitions. [2021-10-06 21:14:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:14:41,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:41,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:41,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:41,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:41,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1493779030, now seen corresponding path program 1 times [2021-10-06 21:14:41,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:41,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376185818] [2021-10-06 21:14:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:41,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:41,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:41,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:14:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:41,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:14:41,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:42,068 INFO L354 Elim1Store]: treesize reduction 682, result has 11.3 percent of original size [2021-10-06 21:14:42,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 30 treesize of output 92 [2021-10-06 21:14:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:42,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:43,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:43,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376185818] [2021-10-06 21:14:43,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376185818] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:43,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:43,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-06 21:14:43,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887016068] [2021-10-06 21:14:43,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:14:43,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:14:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:14:43,021 INFO L87 Difference]: Start difference. First operand 508 states and 3012 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:43,108 INFO L93 Difference]: Finished difference Result 444 states and 2564 transitions. [2021-10-06 21:14:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:43,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:14:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:43,113 INFO L225 Difference]: With dead ends: 444 [2021-10-06 21:14:43,113 INFO L226 Difference]: Without dead ends: 444 [2021-10-06 21:14:43,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.1ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:14:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-06 21:14:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-10-06 21:14:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 5.800904977375565) internal successors, (2564), 443 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 2564 transitions. [2021-10-06 21:14:43,133 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 2564 transitions. Word has length 13 [2021-10-06 21:14:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:43,134 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 2564 transitions. [2021-10-06 21:14:43,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:43,134 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 2564 transitions. [2021-10-06 21:14:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:14:43,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:43,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:43,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-06 21:14:43,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:43,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1493779032, now seen corresponding path program 1 times [2021-10-06 21:14:43,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:43,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838212330] [2021-10-06 21:14:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:43,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:43,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:43,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:14:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:43,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:43,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:43,951 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-06 21:14:43,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 96 [2021-10-06 21:14:43,971 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 213 treesize of output 205 [2021-10-06 21:14:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:45,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:46,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:46,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838212330] [2021-10-06 21:14:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838212330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:46,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:46,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-06 21:14:46,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207234249] [2021-10-06 21:14:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:14:46,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:14:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:14:46,263 INFO L87 Difference]: Start difference. First operand 444 states and 2564 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2021-10-06 21:14:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:46,379 INFO L93 Difference]: Finished difference Result 380 states and 2116 transitions. [2021-10-06 21:14:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:14:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:14:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:46,385 INFO L225 Difference]: With dead ends: 380 [2021-10-06 21:14:46,385 INFO L226 Difference]: Without dead ends: 380 [2021-10-06 21:14:46,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 458.7ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:14:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-06 21:14:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-10-06 21:14:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 5.58311345646438) internal successors, (2116), 379 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 2116 transitions. [2021-10-06 21:14:46,400 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 2116 transitions. Word has length 13 [2021-10-06 21:14:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:46,400 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 2116 transitions. [2021-10-06 21:14:46,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2021-10-06 21:14:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 2116 transitions. [2021-10-06 21:14:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-06 21:14:46,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:46,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:46,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:46,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:46,613 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash -822180181, now seen corresponding path program 1 times [2021-10-06 21:14:46,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:46,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485192707] [2021-10-06 21:14:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:46,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:46,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:46,616 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:46,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:14:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:46,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:14:46,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:47,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:47,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:47,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485192707] [2021-10-06 21:14:47,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485192707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:47,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:47,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:47,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755346975] [2021-10-06 21:14:47,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:47,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:47,602 INFO L87 Difference]: Start difference. First operand 380 states and 2116 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:47,661 INFO L93 Difference]: Finished difference Result 1134 states and 6342 transitions. [2021-10-06 21:14:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:14:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-06 21:14:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:47,678 INFO L225 Difference]: With dead ends: 1134 [2021-10-06 21:14:47,678 INFO L226 Difference]: Without dead ends: 1108 [2021-10-06 21:14:47,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-06 21:14:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2021-10-06 21:14:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 5.631436314363143) internal successors, (6234), 1107 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 6234 transitions. [2021-10-06 21:14:47,750 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 6234 transitions. Word has length 31 [2021-10-06 21:14:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:47,750 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 6234 transitions. [2021-10-06 21:14:47,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 6234 transitions. [2021-10-06 21:14:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-06 21:14:47,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:47,757 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:47,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:47,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:47,971 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1817001877, now seen corresponding path program 1 times [2021-10-06 21:14:47,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:47,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422008404] [2021-10-06 21:14:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:47,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:47,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:47,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:14:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:48,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:14:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:48,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:48,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:48,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422008404] [2021-10-06 21:14:48,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422008404] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:48,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:48,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:48,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140722384] [2021-10-06 21:14:48,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:48,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:48,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:48,760 INFO L87 Difference]: Start difference. First operand 1108 states and 6234 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:48,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:48,816 INFO L93 Difference]: Finished difference Result 2190 states and 12423 transitions. [2021-10-06 21:14:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:14:48,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-06 21:14:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:48,846 INFO L225 Difference]: With dead ends: 2190 [2021-10-06 21:14:48,847 INFO L226 Difference]: Without dead ends: 2124 [2021-10-06 21:14:48,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-10-06 21:14:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1068. [2021-10-06 21:14:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 5.686972820993439) internal successors, (6068), 1067 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 6068 transitions. [2021-10-06 21:14:48,916 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 6068 transitions. Word has length 33 [2021-10-06 21:14:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:48,917 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 6068 transitions. [2021-10-06 21:14:48,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 6068 transitions. [2021-10-06 21:14:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-06 21:14:48,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:48,923 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:48,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:49,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:49,137 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1392937195, now seen corresponding path program 1 times [2021-10-06 21:14:49,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:49,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341784679] [2021-10-06 21:14:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:49,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:49,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:49,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:14:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:49,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:14:49,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:49,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:49,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:49,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341784679] [2021-10-06 21:14:49,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341784679] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:49,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:49,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198052830] [2021-10-06 21:14:49,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:49,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:49,880 INFO L87 Difference]: Start difference. First operand 1068 states and 6068 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:49,942 INFO L93 Difference]: Finished difference Result 3198 states and 18198 transitions. [2021-10-06 21:14:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:14:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-06 21:14:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:49,963 INFO L225 Difference]: With dead ends: 3198 [2021-10-06 21:14:49,963 INFO L226 Difference]: Without dead ends: 3052 [2021-10-06 21:14:49,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-10-06 21:14:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2452. [2021-10-06 21:14:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2451 states have (on average 6.105263157894737) internal successors, (14964), 2451 states have internal predecessors, (14964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 14964 transitions. [2021-10-06 21:14:50,099 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 14964 transitions. Word has length 33 [2021-10-06 21:14:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:50,100 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 14964 transitions. [2021-10-06 21:14:50,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 14964 transitions. [2021-10-06 21:14:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-06 21:14:50,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:50,115 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:50,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:50,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:50,329 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1705296523, now seen corresponding path program 1 times [2021-10-06 21:14:50,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:50,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881628961] [2021-10-06 21:14:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:50,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:50,332 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:50,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:14:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:50,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:14:50,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:50,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:51,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:51,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881628961] [2021-10-06 21:14:51,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881628961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:14:51,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:14:51,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:14:51,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296832325] [2021-10-06 21:14:51,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:14:51,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:14:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:51,205 INFO L87 Difference]: Start difference. First operand 2452 states and 14964 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:51,294 INFO L93 Difference]: Finished difference Result 4230 states and 25090 transitions. [2021-10-06 21:14:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:14:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-06 21:14:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:51,327 INFO L225 Difference]: With dead ends: 4230 [2021-10-06 21:14:51,327 INFO L226 Difference]: Without dead ends: 3984 [2021-10-06 21:14:51,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:14:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-10-06 21:14:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3612. [2021-10-06 21:14:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 6.1348656881750205) internal successors, (22153), 3611 states have internal predecessors, (22153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 22153 transitions. [2021-10-06 21:14:51,585 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 22153 transitions. Word has length 33 [2021-10-06 21:14:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:51,585 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 22153 transitions. [2021-10-06 21:14:51,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 22153 transitions. [2021-10-06 21:14:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 21:14:51,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:51,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:51,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:51,820 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1897930490, now seen corresponding path program 1 times [2021-10-06 21:14:51,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:51,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418066467] [2021-10-06 21:14:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:51,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:51,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:51,824 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:51,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:14:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:52,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:52,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:14:52,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:14:53,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:53,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418066467] [2021-10-06 21:14:53,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418066467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:53,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:53,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-06 21:14:53,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503449071] [2021-10-06 21:14:53,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:14:53,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:14:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:14:53,339 INFO L87 Difference]: Start difference. First operand 3612 states and 22153 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:53,714 INFO L93 Difference]: Finished difference Result 10102 states and 61287 transitions. [2021-10-06 21:14:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:14:53,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-06 21:14:53,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:53,795 INFO L225 Difference]: With dead ends: 10102 [2021-10-06 21:14:53,795 INFO L226 Difference]: Without dead ends: 8976 [2021-10-06 21:14:53,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:14:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2021-10-06 21:14:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 5282. [2021-10-06 21:14:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 6.359022912327211) internal successors, (33582), 5281 states have internal predecessors, (33582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 33582 transitions. [2021-10-06 21:14:54,320 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 33582 transitions. Word has length 34 [2021-10-06 21:14:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:54,321 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 33582 transitions. [2021-10-06 21:14:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 33582 transitions. [2021-10-06 21:14:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 21:14:54,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:54,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:54,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:54,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:54,570 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1526036222, now seen corresponding path program 1 times [2021-10-06 21:14:54,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:54,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112768386] [2021-10-06 21:14:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:54,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:54,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:54,574 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:54,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:14:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:55,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:14:55,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:14:55,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:14:56,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:56,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112768386] [2021-10-06 21:14:56,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112768386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:56,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-06 21:14:56,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837343560] [2021-10-06 21:14:56,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:14:56,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:14:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:14:56,407 INFO L87 Difference]: Start difference. First operand 5282 states and 33582 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:56,833 INFO L93 Difference]: Finished difference Result 12460 states and 75889 transitions. [2021-10-06 21:14:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:14:56,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-06 21:14:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:56,934 INFO L225 Difference]: With dead ends: 12460 [2021-10-06 21:14:56,935 INFO L226 Difference]: Without dead ends: 11470 [2021-10-06 21:14:56,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:14:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11470 states. [2021-10-06 21:14:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11470 to 6220. [2021-10-06 21:14:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6220 states, 6219 states have (on average 6.284933269014311) internal successors, (39086), 6219 states have internal predecessors, (39086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 39086 transitions. [2021-10-06 21:14:57,685 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 39086 transitions. Word has length 34 [2021-10-06 21:14:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:57,685 INFO L470 AbstractCegarLoop]: Abstraction has 6220 states and 39086 transitions. [2021-10-06 21:14:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 39086 transitions. [2021-10-06 21:14:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:14:57,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:57,716 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:57,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:57,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:57,931 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:14:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:57,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1736904341, now seen corresponding path program 1 times [2021-10-06 21:14:57,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:57,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170685816] [2021-10-06 21:14:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:14:57,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:57,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:58,002 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:58,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:14:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:58,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:14:58,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:59,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:04,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:04,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170685816] [2021-10-06 21:15:04,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170685816] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:04,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:04,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:04,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996046879] [2021-10-06 21:15:04,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:04,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:04,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:04,254 INFO L87 Difference]: Start difference. First operand 6220 states and 39086 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:06,751 INFO L93 Difference]: Finished difference Result 25484 states and 154736 transitions. [2021-10-06 21:15:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:15:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:07,166 INFO L225 Difference]: With dead ends: 25484 [2021-10-06 21:15:07,167 INFO L226 Difference]: Without dead ends: 25380 [2021-10-06 21:15:07,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2036.5ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:15:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25380 states. [2021-10-06 21:15:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25380 to 13370. [2021-10-06 21:15:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 6.566908519709776) internal successors, (87793), 13369 states have internal predecessors, (87793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 87793 transitions. [2021-10-06 21:15:08,554 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 87793 transitions. Word has length 35 [2021-10-06 21:15:08,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:08,555 INFO L470 AbstractCegarLoop]: Abstraction has 13370 states and 87793 transitions. [2021-10-06 21:15:08,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 87793 transitions. [2021-10-06 21:15:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:08,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:08,644 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:08,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:08,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:08,845 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1326201316, now seen corresponding path program 1 times [2021-10-06 21:15:08,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:08,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712957127] [2021-10-06 21:15:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:15:08,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:08,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:08,850 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:08,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:15:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:15:09,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:10,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:15,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712957127] [2021-10-06 21:15:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712957127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:15,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:15:15,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913659912] [2021-10-06 21:15:15,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:15:15,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:15:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:15:15,205 INFO L87 Difference]: Start difference. First operand 13370 states and 87793 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:17,610 INFO L93 Difference]: Finished difference Result 33418 states and 209063 transitions. [2021-10-06 21:15:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:15:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:18,227 INFO L225 Difference]: With dead ends: 33418 [2021-10-06 21:15:18,227 INFO L226 Difference]: Without dead ends: 33314 [2021-10-06 21:15:18,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1914.3ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:15:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33314 states. [2021-10-06 21:15:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33314 to 19334. [2021-10-06 21:15:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19334 states, 19333 states have (on average 6.711012258832048) internal successors, (129744), 19333 states have internal predecessors, (129744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19334 states to 19334 states and 129744 transitions. [2021-10-06 21:15:20,098 INFO L78 Accepts]: Start accepts. Automaton has 19334 states and 129744 transitions. Word has length 35 [2021-10-06 21:15:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:20,099 INFO L470 AbstractCegarLoop]: Abstraction has 19334 states and 129744 transitions. [2021-10-06 21:15:20,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 19334 states and 129744 transitions. [2021-10-06 21:15:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:20,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:20,223 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:20,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:20,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:20,437 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1363665316, now seen corresponding path program 1 times [2021-10-06 21:15:20,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:20,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795185828] [2021-10-06 21:15:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:15:20,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:20,441 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:20,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:15:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:20,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:15:21,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:15:21,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:15:21,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:21,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795185828] [2021-10-06 21:15:21,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795185828] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:15:21,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:15:21,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:15:21,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082840954] [2021-10-06 21:15:21,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:15:21,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:15:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:15:21,393 INFO L87 Difference]: Start difference. First operand 19334 states and 129744 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:21,835 INFO L93 Difference]: Finished difference Result 23707 states and 158315 transitions. [2021-10-06 21:15:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:15:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:22,015 INFO L225 Difference]: With dead ends: 23707 [2021-10-06 21:15:22,015 INFO L226 Difference]: Without dead ends: 21432 [2021-10-06 21:15:22,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:15:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2021-10-06 21:15:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 19552. [2021-10-06 21:15:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19552 states, 19551 states have (on average 6.747174057592962) internal successors, (131914), 19551 states have internal predecessors, (131914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19552 states to 19552 states and 131914 transitions. [2021-10-06 21:15:23,234 INFO L78 Accepts]: Start accepts. Automaton has 19552 states and 131914 transitions. Word has length 35 [2021-10-06 21:15:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:23,234 INFO L470 AbstractCegarLoop]: Abstraction has 19552 states and 131914 transitions. [2021-10-06 21:15:23,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 19552 states and 131914 transitions. [2021-10-06 21:15:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:23,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:23,575 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:23,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:23,790 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1759994297, now seen corresponding path program 2 times [2021-10-06 21:15:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548144655] [2021-10-06 21:15:23,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:23,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:23,793 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:23,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:15:24,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:24,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:24,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:15:24,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:25,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:28,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:28,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548144655] [2021-10-06 21:15:28,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548144655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:28,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:28,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:15:28,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886262328] [2021-10-06 21:15:28,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:15:28,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:15:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:15:28,116 INFO L87 Difference]: Start difference. First operand 19552 states and 131914 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:29,775 INFO L93 Difference]: Finished difference Result 42585 states and 276469 transitions. [2021-10-06 21:15:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:30,410 INFO L225 Difference]: With dead ends: 42585 [2021-10-06 21:15:30,410 INFO L226 Difference]: Without dead ends: 42356 [2021-10-06 21:15:30,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 992.9ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:15:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42356 states. [2021-10-06 21:15:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42356 to 20194. [2021-10-06 21:15:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20194 states, 20193 states have (on average 6.845689100183232) internal successors, (138235), 20193 states have internal predecessors, (138235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20194 states to 20194 states and 138235 transitions. [2021-10-06 21:15:31,983 INFO L78 Accepts]: Start accepts. Automaton has 20194 states and 138235 transitions. Word has length 35 [2021-10-06 21:15:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:31,983 INFO L470 AbstractCegarLoop]: Abstraction has 20194 states and 138235 transitions. [2021-10-06 21:15:31,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 20194 states and 138235 transitions. [2021-10-06 21:15:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:32,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:32,526 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:32,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:32,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:32,740 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:32,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1506717888, now seen corresponding path program 2 times [2021-10-06 21:15:32,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:32,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122784986] [2021-10-06 21:15:32,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:32,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:32,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:32,744 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:32,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:15:33,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:33,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:33,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:15:33,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:34,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:37,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:37,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122784986] [2021-10-06 21:15:37,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122784986] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:37,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:37,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:15:37,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418195130] [2021-10-06 21:15:37,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:15:37,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:15:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:15:37,614 INFO L87 Difference]: Start difference. First operand 20194 states and 138235 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:39,348 INFO L93 Difference]: Finished difference Result 42075 states and 275355 transitions. [2021-10-06 21:15:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:39,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:39,671 INFO L225 Difference]: With dead ends: 42075 [2021-10-06 21:15:39,672 INFO L226 Difference]: Without dead ends: 41846 [2021-10-06 21:15:39,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 956.1ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:15:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41846 states. [2021-10-06 21:15:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41846 to 20494. [2021-10-06 21:15:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20494 states, 20493 states have (on average 6.928804957790465) internal successors, (141992), 20493 states have internal predecessors, (141992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20494 states to 20494 states and 141992 transitions. [2021-10-06 21:15:41,762 INFO L78 Accepts]: Start accepts. Automaton has 20494 states and 141992 transitions. Word has length 35 [2021-10-06 21:15:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:41,763 INFO L470 AbstractCegarLoop]: Abstraction has 20494 states and 141992 transitions. [2021-10-06 21:15:41,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20494 states and 141992 transitions. [2021-10-06 21:15:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:41,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:41,898 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:41,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-06 21:15:42,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:42,113 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash 808708259, now seen corresponding path program 1 times [2021-10-06 21:15:42,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:42,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361091340] [2021-10-06 21:15:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:15:42,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:42,116 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:42,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:15:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:42,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:15:42,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:43,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:46,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:46,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361091340] [2021-10-06 21:15:46,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361091340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:46,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:46,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:15:46,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960340045] [2021-10-06 21:15:46,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:15:46,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:15:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:15:46,539 INFO L87 Difference]: Start difference. First operand 20494 states and 141992 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:48,258 INFO L93 Difference]: Finished difference Result 40775 states and 269984 transitions. [2021-10-06 21:15:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:15:48,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:48,574 INFO L225 Difference]: With dead ends: 40775 [2021-10-06 21:15:48,575 INFO L226 Difference]: Without dead ends: 40602 [2021-10-06 21:15:48,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 928.6ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:15:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40602 states. [2021-10-06 21:15:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40602 to 26552. [2021-10-06 21:15:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26552 states, 26551 states have (on average 7.0843659372528345) internal successors, (188097), 26551 states have internal predecessors, (188097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26552 states to 26552 states and 188097 transitions. [2021-10-06 21:15:50,764 INFO L78 Accepts]: Start accepts. Automaton has 26552 states and 188097 transitions. Word has length 35 [2021-10-06 21:15:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:50,765 INFO L470 AbstractCegarLoop]: Abstraction has 26552 states and 188097 transitions. [2021-10-06 21:15:50,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 26552 states and 188097 transitions. [2021-10-06 21:15:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:15:50,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:50,951 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:50,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:51,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:51,152 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:15:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash 797901611, now seen corresponding path program 2 times [2021-10-06 21:15:51,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:51,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555911205] [2021-10-06 21:15:51,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:51,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:51,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:51,154 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:51,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:15:52,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:52,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:52,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:15:52,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:52,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:15:55,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:55,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555911205] [2021-10-06 21:15:55,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555911205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:55,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:55,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:15:55,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927907679] [2021-10-06 21:15:55,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:15:55,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:15:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:15:55,881 INFO L87 Difference]: Start difference. First operand 26552 states and 188097 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:57,870 INFO L93 Difference]: Finished difference Result 47191 states and 317904 transitions. [2021-10-06 21:15:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:15:57,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:15:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:58,314 INFO L225 Difference]: With dead ends: 47191 [2021-10-06 21:15:58,314 INFO L226 Difference]: Without dead ends: 47003 [2021-10-06 21:15:58,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1058.8ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:15:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47003 states. [2021-10-06 21:16:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47003 to 31564. [2021-10-06 21:16:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31564 states, 31563 states have (on average 7.168963659981624) internal successors, (226274), 31563 states have internal predecessors, (226274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31564 states to 31564 states and 226274 transitions. [2021-10-06 21:16:00,858 INFO L78 Accepts]: Start accepts. Automaton has 31564 states and 226274 transitions. Word has length 35 [2021-10-06 21:16:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:00,859 INFO L470 AbstractCegarLoop]: Abstraction has 31564 states and 226274 transitions. [2021-10-06 21:16:00,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 31564 states and 226274 transitions. [2021-10-06 21:16:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:16:01,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:01,072 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:01,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:01,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:01,274 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:16:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash 92138616, now seen corresponding path program 1 times [2021-10-06 21:16:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:01,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144770999] [2021-10-06 21:16:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:16:01,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:01,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:01,277 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:01,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:16:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:16:02,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:16:02,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:02,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:06,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:06,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144770999] [2021-10-06 21:16:06,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144770999] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:06,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:06,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:16:06,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593056676] [2021-10-06 21:16:06,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:16:06,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:16:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:16:06,275 INFO L87 Difference]: Start difference. First operand 31564 states and 226274 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:08,242 INFO L93 Difference]: Finished difference Result 51433 states and 352690 transitions. [2021-10-06 21:16:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:16:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:16:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:09,007 INFO L225 Difference]: With dead ends: 51433 [2021-10-06 21:16:09,008 INFO L226 Difference]: Without dead ends: 51260 [2021-10-06 21:16:09,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1326.8ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:16:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51260 states. [2021-10-06 21:16:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51260 to 37518. [2021-10-06 21:16:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37518 states, 37517 states have (on average 7.2605485513234) internal successors, (272394), 37517 states have internal predecessors, (272394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37518 states to 37518 states and 272394 transitions. [2021-10-06 21:16:11,425 INFO L78 Accepts]: Start accepts. Automaton has 37518 states and 272394 transitions. Word has length 35 [2021-10-06 21:16:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:11,425 INFO L470 AbstractCegarLoop]: Abstraction has 37518 states and 272394 transitions. [2021-10-06 21:16:11,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37518 states and 272394 transitions. [2021-10-06 21:16:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:16:12,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:12,178 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:12,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:12,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:12,392 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:16:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash -162684353, now seen corresponding path program 1 times [2021-10-06 21:16:12,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:12,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140464068] [2021-10-06 21:16:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:16:12,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:12,395 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:12,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:16:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:16:13,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:16:13,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:14,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:17,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:17,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140464068] [2021-10-06 21:16:17,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140464068] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:17,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:17,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:16:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145036086] [2021-10-06 21:16:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:16:17,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:16:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:16:17,265 INFO L87 Difference]: Start difference. First operand 37518 states and 272394 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:19,409 INFO L93 Difference]: Finished difference Result 57905 states and 400432 transitions. [2021-10-06 21:16:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:16:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:16:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:19,892 INFO L225 Difference]: With dead ends: 57905 [2021-10-06 21:16:19,893 INFO L226 Difference]: Without dead ends: 57717 [2021-10-06 21:16:19,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1074.2ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:16:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57717 states. [2021-10-06 21:16:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57717 to 43046. [2021-10-06 21:16:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43045 states have (on average 7.313509118364502) internal successors, (314810), 43045 states have internal predecessors, (314810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 314810 transitions. [2021-10-06 21:16:22,830 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 314810 transitions. Word has length 35 [2021-10-06 21:16:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:22,831 INFO L470 AbstractCegarLoop]: Abstraction has 43046 states and 314810 transitions. [2021-10-06 21:16:22,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 314810 transitions. [2021-10-06 21:16:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:16:23,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:23,688 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:23,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:23,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:23,903 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:16:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1397493781, now seen corresponding path program 2 times [2021-10-06 21:16:23,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:23,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669083457] [2021-10-06 21:16:23,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:16:23,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:23,907 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:23,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:16:25,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:16:25,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:16:25,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:25,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:29,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:29,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669083457] [2021-10-06 21:16:29,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669083457] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:29,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:29,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:16:29,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051618359] [2021-10-06 21:16:29,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:16:29,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:16:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:16:29,347 INFO L87 Difference]: Start difference. First operand 43046 states and 314810 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:31,693 INFO L93 Difference]: Finished difference Result 65992 states and 460978 transitions. [2021-10-06 21:16:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:16:31,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-06 21:16:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:32,722 INFO L225 Difference]: With dead ends: 65992 [2021-10-06 21:16:32,722 INFO L226 Difference]: Without dead ends: 65806 [2021-10-06 21:16:32,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1077.7ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:16:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65806 states. [2021-10-06 21:16:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65806 to 47572. [2021-10-06 21:16:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47572 states, 47571 states have (on average 7.341846923545858) internal successors, (349259), 47571 states have internal predecessors, (349259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47572 states to 47572 states and 349259 transitions. [2021-10-06 21:16:36,345 INFO L78 Accepts]: Start accepts. Automaton has 47572 states and 349259 transitions. Word has length 35 [2021-10-06 21:16:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:36,345 INFO L470 AbstractCegarLoop]: Abstraction has 47572 states and 349259 transitions. [2021-10-06 21:16:36,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 47572 states and 349259 transitions. [2021-10-06 21:16:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 21:16:36,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:36,568 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:36,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:36,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:36,769 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:16:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash -281179265, now seen corresponding path program 3 times [2021-10-06 21:16:36,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:36,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789556533] [2021-10-06 21:16:36,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:16:36,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:36,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:36,773 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:36,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:16:38,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:16:38,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:38,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:16:38,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:16:38,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:16:39,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:39,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789556533] [2021-10-06 21:16:39,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789556533] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:39,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:39,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-06 21:16:39,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540923511] [2021-10-06 21:16:39,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:16:39,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:16:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:16:39,707 INFO L87 Difference]: Start difference. First operand 47572 states and 349259 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:43,864 INFO L93 Difference]: Finished difference Result 139888 states and 1011685 transitions. [2021-10-06 21:16:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:16:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2021-10-06 21:16:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:46,297 INFO L225 Difference]: With dead ends: 139888 [2021-10-06 21:16:46,298 INFO L226 Difference]: Without dead ends: 122426 [2021-10-06 21:16:46,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:16:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122426 states. [2021-10-06 21:16:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122426 to 78558. [2021-10-06 21:16:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78558 states, 78557 states have (on average 7.543808954007917) internal successors, (592619), 78557 states have internal predecessors, (592619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78558 states to 78558 states and 592619 transitions. [2021-10-06 21:16:54,963 INFO L78 Accepts]: Start accepts. Automaton has 78558 states and 592619 transitions. Word has length 35 [2021-10-06 21:16:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:54,963 INFO L470 AbstractCegarLoop]: Abstraction has 78558 states and 592619 transitions. [2021-10-06 21:16:54,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 78558 states and 592619 transitions. [2021-10-06 21:16:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:16:55,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:55,442 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:55,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:55,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:55,642 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:16:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash 370267623, now seen corresponding path program 3 times [2021-10-06 21:16:55,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:55,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71470856] [2021-10-06 21:16:55,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:16:55,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:55,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:55,645 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:55,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:16:56,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:16:56,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:16:56,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:16:56,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:16:59,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:59,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71470856] [2021-10-06 21:16:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71470856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:59,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:59,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-06 21:16:59,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357537340] [2021-10-06 21:16:59,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:16:59,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:16:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:16:59,825 INFO L87 Difference]: Start difference. First operand 78558 states and 592619 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:02,148 INFO L93 Difference]: Finished difference Result 101499 states and 758414 transitions. [2021-10-06 21:17:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:17:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2021-10-06 21:17:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:03,207 INFO L225 Difference]: With dead ends: 101499 [2021-10-06 21:17:03,207 INFO L226 Difference]: Without dead ends: 90940 [2021-10-06 21:17:03,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:17:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90940 states. [2021-10-06 21:17:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90940 to 79408. [2021-10-06 21:17:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79408 states, 79407 states have (on average 7.5037968944803355) internal successors, (595854), 79407 states have internal predecessors, (595854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79408 states to 79408 states and 595854 transitions. [2021-10-06 21:17:09,336 INFO L78 Accepts]: Start accepts. Automaton has 79408 states and 595854 transitions. Word has length 36 [2021-10-06 21:17:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:09,337 INFO L470 AbstractCegarLoop]: Abstraction has 79408 states and 595854 transitions. [2021-10-06 21:17:09,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 79408 states and 595854 transitions. [2021-10-06 21:17:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:17:10,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:10,418 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:10,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:10,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:10,633 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:17:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 309164220, now seen corresponding path program 1 times [2021-10-06 21:17:10,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:10,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759294367] [2021-10-06 21:17:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:17:10,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:10,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:10,637 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:10,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:17:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:17:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:17:11,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:17:11,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:17:14,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:14,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759294367] [2021-10-06 21:17:14,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759294367] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:14,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:14,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:17:14,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227579746] [2021-10-06 21:17:14,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:17:14,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:17:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:17:14,275 INFO L87 Difference]: Start difference. First operand 79408 states and 595854 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:19,437 INFO L93 Difference]: Finished difference Result 157013 states and 1125418 transitions. [2021-10-06 21:17:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:17:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-06 21:17:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:22,213 INFO L225 Difference]: With dead ends: 157013 [2021-10-06 21:17:22,214 INFO L226 Difference]: Without dead ends: 153669 [2021-10-06 21:17:22,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 963.5ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:17:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153669 states. [2021-10-06 21:17:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153669 to 100418. [2021-10-06 21:17:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100418 states, 100417 states have (on average 7.622703327125885) internal successors, (765449), 100417 states have internal predecessors, (765449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100418 states to 100418 states and 765449 transitions. [2021-10-06 21:17:32,532 INFO L78 Accepts]: Start accepts. Automaton has 100418 states and 765449 transitions. Word has length 36 [2021-10-06 21:17:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:32,533 INFO L470 AbstractCegarLoop]: Abstraction has 100418 states and 765449 transitions. [2021-10-06 21:17:32,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 100418 states and 765449 transitions. [2021-10-06 21:17:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:17:33,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:33,134 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:33,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:33,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:33,335 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:17:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash 432894540, now seen corresponding path program 2 times [2021-10-06 21:17:33,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:33,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424062921] [2021-10-06 21:17:33,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:17:33,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:33,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:33,339 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:33,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:17:35,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:17:35,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:35,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:17:35,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:36,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:43,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:43,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424062921] [2021-10-06 21:17:43,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424062921] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:43,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:43,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 21:17:43,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415345299] [2021-10-06 21:17:43,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:17:43,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:43,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:17:43,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:17:43,315 INFO L87 Difference]: Start difference. First operand 100418 states and 765449 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:50,330 INFO L93 Difference]: Finished difference Result 130674 states and 956505 transitions. [2021-10-06 21:17:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:17:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-06 21:17:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:53,410 INFO L225 Difference]: With dead ends: 130674 [2021-10-06 21:17:53,411 INFO L226 Difference]: Without dead ends: 130544 [2021-10-06 21:17:53,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2887.4ms TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:17:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130544 states. [2021-10-06 21:18:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130544 to 108012. [2021-10-06 21:18:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108012 states, 108011 states have (on average 7.61074335021433) internal successors, (822044), 108011 states have internal predecessors, (822044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108012 states to 108012 states and 822044 transitions. [2021-10-06 21:18:03,943 INFO L78 Accepts]: Start accepts. Automaton has 108012 states and 822044 transitions. Word has length 36 [2021-10-06 21:18:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:03,944 INFO L470 AbstractCegarLoop]: Abstraction has 108012 states and 822044 transitions. [2021-10-06 21:18:03,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 108012 states and 822044 transitions. [2021-10-06 21:18:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:18:05,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:05,221 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:05,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:05,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:05,422 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:18:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:05,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1851070430, now seen corresponding path program 3 times [2021-10-06 21:18:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:05,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074461710] [2021-10-06 21:18:05,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:18:05,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:05,426 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:05,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:18:06,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:18:06,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:06,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:18:06,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:18:07,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:18:10,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:10,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074461710] [2021-10-06 21:18:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074461710] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:10,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:10,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:18:10,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951270466] [2021-10-06 21:18:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:18:10,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:18:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:18:10,943 INFO L87 Difference]: Start difference. First operand 108012 states and 822044 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:14,948 INFO L93 Difference]: Finished difference Result 138742 states and 1021648 transitions. [2021-10-06 21:18:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:18:14,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2021-10-06 21:18:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:17,243 INFO L225 Difference]: With dead ends: 138742 [2021-10-06 21:18:17,244 INFO L226 Difference]: Without dead ends: 138426 [2021-10-06 21:18:17,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 931.4ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:18:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138426 states. [2021-10-06 21:18:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138426 to 116240. [2021-10-06 21:18:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116240 states, 116239 states have (on average 7.598835158595652) internal successors, (883281), 116239 states have internal predecessors, (883281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116240 states to 116240 states and 883281 transitions. [2021-10-06 21:18:28,603 INFO L78 Accepts]: Start accepts. Automaton has 116240 states and 883281 transitions. Word has length 36 [2021-10-06 21:18:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:28,603 INFO L470 AbstractCegarLoop]: Abstraction has 116240 states and 883281 transitions. [2021-10-06 21:18:28,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 116240 states and 883281 transitions. [2021-10-06 21:18:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:18:29,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:29,851 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:29,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:30,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:30,067 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:18:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -759820738, now seen corresponding path program 4 times [2021-10-06 21:18:30,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:30,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169648890] [2021-10-06 21:18:30,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:18:30,069 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:30,070 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:30,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:18:31,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:18:31,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:31,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:18:31,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:32,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:41,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:41,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169648890] [2021-10-06 21:18:41,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169648890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:41,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:41,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 21:18:41,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742054039] [2021-10-06 21:18:41,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:18:41,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:18:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:18:41,407 INFO L87 Difference]: Start difference. First operand 116240 states and 883281 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:48,100 INFO L93 Difference]: Finished difference Result 153655 states and 1120112 transitions. [2021-10-06 21:18:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:18:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 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 36 [2021-10-06 21:18:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:51,746 INFO L225 Difference]: With dead ends: 153655 [2021-10-06 21:18:51,748 INFO L226 Difference]: Without dead ends: 153538 [2021-10-06 21:18:51,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2997.2ms TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:18:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153538 states. [2021-10-06 21:19:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153538 to 123714. [2021-10-06 21:19:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123714 states, 123713 states have (on average 7.599807619247775) internal successors, (940195), 123713 states have internal predecessors, (940195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123714 states to 123714 states and 940195 transitions. [2021-10-06 21:19:07,164 INFO L78 Accepts]: Start accepts. Automaton has 123714 states and 940195 transitions. Word has length 36 [2021-10-06 21:19:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:07,164 INFO L470 AbstractCegarLoop]: Abstraction has 123714 states and 940195 transitions. [2021-10-06 21:19:07,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 123714 states and 940195 transitions. [2021-10-06 21:19:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 21:19:08,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:08,509 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:08,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:08,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:08,723 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:19:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:08,724 INFO L82 PathProgramCache]: Analyzing trace with hash 987147912, now seen corresponding path program 5 times [2021-10-06 21:19:08,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:08,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147037795] [2021-10-06 21:19:08,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:19:08,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:08,728 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:08,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:19:10,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:19:10,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:10,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:10,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:19:10,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:19:11,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:11,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147037795] [2021-10-06 21:19:11,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147037795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:11,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:11,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-06 21:19:11,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361045178] [2021-10-06 21:19:11,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:11,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:11,424 INFO L87 Difference]: Start difference. First operand 123714 states and 940195 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:16,848 INFO L93 Difference]: Finished difference Result 198396 states and 1477774 transitions. [2021-10-06 21:19:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:19:16,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2021-10-06 21:19:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:20,149 INFO L225 Difference]: With dead ends: 198396 [2021-10-06 21:19:20,149 INFO L226 Difference]: Without dead ends: 190526 [2021-10-06 21:19:20,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:19:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190526 states. [2021-10-06 21:19:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190526 to 107312. [2021-10-06 21:19:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107312 states, 107311 states have (on average 7.619032531613721) internal successors, (817606), 107311 states have internal predecessors, (817606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107312 states to 107312 states and 817606 transitions. [2021-10-06 21:19:32,861 INFO L78 Accepts]: Start accepts. Automaton has 107312 states and 817606 transitions. Word has length 36 [2021-10-06 21:19:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:32,862 INFO L470 AbstractCegarLoop]: Abstraction has 107312 states and 817606 transitions. [2021-10-06 21:19:32,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand 107312 states and 817606 transitions. [2021-10-06 21:19:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 21:19:34,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:34,053 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:34,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:34,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:34,261 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:19:34,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash 244293740, now seen corresponding path program 3 times [2021-10-06 21:19:34,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:34,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225244152] [2021-10-06 21:19:34,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:19:34,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:34,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:34,265 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:34,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:19:36,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:19:36,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:36,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:19:36,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:19:36,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:19:39,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:39,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225244152] [2021-10-06 21:19:39,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225244152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:39,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:39,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:19:39,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181072921] [2021-10-06 21:19:39,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:19:39,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:19:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:19:39,927 INFO L87 Difference]: Start difference. First operand 107312 states and 817606 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:51,225 INFO L93 Difference]: Finished difference Result 327564 states and 2379663 transitions. [2021-10-06 21:19:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:19:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 37 [2021-10-06 21:19:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:58,049 INFO L225 Difference]: With dead ends: 327564 [2021-10-06 21:19:58,049 INFO L226 Difference]: Without dead ends: 325430 [2021-10-06 21:19:58,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1252.3ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:19:58,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325430 states. [2021-10-06 21:20:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325430 to 195922. [2021-10-06 21:20:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195922 states, 195921 states have (on average 7.797882820116271) internal successors, (1527769), 195921 states have internal predecessors, (1527769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195922 states to 195922 states and 1527769 transitions. [2021-10-06 21:20:22,608 INFO L78 Accepts]: Start accepts. Automaton has 195922 states and 1527769 transitions. Word has length 37 [2021-10-06 21:20:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:22,609 INFO L470 AbstractCegarLoop]: Abstraction has 195922 states and 1527769 transitions. [2021-10-06 21:20:22,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 195922 states and 1527769 transitions. [2021-10-06 21:20:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 21:20:24,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:24,664 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:24,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:24,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:24,878 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:20:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash -252525036, now seen corresponding path program 1 times [2021-10-06 21:20:24,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:24,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633466569] [2021-10-06 21:20:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:24,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:24,882 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:24,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:20:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:27,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-06 21:20:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:28,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:37,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:37,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633466569] [2021-10-06 21:20:37,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633466569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:37,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:37,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:20:37,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300948533] [2021-10-06 21:20:37,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:20:37,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:37,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:20:37,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:20:37,111 INFO L87 Difference]: Start difference. First operand 195922 states and 1527769 transitions. Second operand has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:48,306 INFO L93 Difference]: Finished difference Result 248291 states and 1865045 transitions. [2021-10-06 21:20:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:20:48,308 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2021-10-06 21:20:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:55,356 INFO L225 Difference]: With dead ends: 248291 [2021-10-06 21:20:55,356 INFO L226 Difference]: Without dead ends: 248161 [2021-10-06 21:20:55,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3934.4ms TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:20:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248161 states. [2021-10-06 21:21:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248161 to 208806. [2021-10-06 21:21:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208806 states, 208805 states have (on average 7.800426235003951) internal successors, (1628768), 208805 states have internal predecessors, (1628768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208806 states to 208806 states and 1628768 transitions. [2021-10-06 21:21:21,547 INFO L78 Accepts]: Start accepts. Automaton has 208806 states and 1628768 transitions. Word has length 37 [2021-10-06 21:21:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:21,547 INFO L470 AbstractCegarLoop]: Abstraction has 208806 states and 1628768 transitions. [2021-10-06 21:21:21,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 208806 states and 1628768 transitions. [2021-10-06 21:21:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 21:21:24,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:24,134 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:24,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:24,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:24,347 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:21:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1272597410, now seen corresponding path program 2 times [2021-10-06 21:21:24,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:24,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875478960] [2021-10-06 21:21:24,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:24,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:24,351 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:24,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:21:26,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:26,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:26,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-06 21:21:26,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:28,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:38,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:38,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875478960] [2021-10-06 21:21:38,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875478960] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:38,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:38,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:21:38,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690212242] [2021-10-06 21:21:38,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:21:38,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:21:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:21:38,424 INFO L87 Difference]: Start difference. First operand 208806 states and 1628768 transitions. Second operand has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:49,028 INFO L93 Difference]: Finished difference Result 247337 states and 1869090 transitions. [2021-10-06 21:21:49,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:21:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2021-10-06 21:21:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:53,556 INFO L225 Difference]: With dead ends: 247337 [2021-10-06 21:21:53,556 INFO L226 Difference]: Without dead ends: 247207 [2021-10-06 21:21:53,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4274.6ms TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:21:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247207 states. [2021-10-06 21:22:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247207 to 212878. [2021-10-06 21:22:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212878 states, 212877 states have (on average 7.8099418913269165) internal successors, (1662557), 212877 states have internal predecessors, (1662557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212878 states to 212878 states and 1662557 transitions. [2021-10-06 21:22:17,867 INFO L78 Accepts]: Start accepts. Automaton has 212878 states and 1662557 transitions. Word has length 37 [2021-10-06 21:22:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:17,880 INFO L470 AbstractCegarLoop]: Abstraction has 212878 states and 1662557 transitions. [2021-10-06 21:22:17,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 212878 states and 1662557 transitions. [2021-10-06 21:22:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 21:22:21,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:21,038 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:21,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:21,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:21,253 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:22:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1050881596, now seen corresponding path program 3 times [2021-10-06 21:22:21,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:21,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691744014] [2021-10-06 21:22:21,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:22:21,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:21,256 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:21,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:22:23,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:22:23,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:23,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:22:23,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:22:24,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:22:27,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:28,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691744014] [2021-10-06 21:22:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691744014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:28,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:22:28,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438302179] [2021-10-06 21:22:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:22:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:22:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:22:28,001 INFO L87 Difference]: Start difference. First operand 212878 states and 1662557 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)