/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:25:22,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:25:22,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:25:22,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:25:22,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:25:22,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:25:22,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:25:22,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:25:22,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:25:22,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:25:22,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:25:22,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:25:22,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:25:22,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:25:22,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:25:22,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:25:22,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:25:22,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:25:22,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:25:22,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:25:22,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:25:22,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:25:22,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:25:22,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:25:22,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:25:22,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:25:22,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:25:22,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:25:22,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:25:22,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:25:22,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:25:22,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:25:22,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:25:22,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:25:22,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:25:22,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:25:22,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:25:22,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:25:22,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:25:22,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:25:22,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:25:22,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:25:22,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:25:22,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:25:22,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:25:22,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:25:22,844 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:25:22,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:25:22,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:25:22,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:25:22,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:25:22,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:25:22,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:25:22,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:25:22,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:25:22,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:25:22,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:25:22,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:25:22,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:25:22,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:25:22,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:25:22,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:25:22,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:25:22,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:25:22,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:25:22,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:25:22,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:25:22,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:25:23,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:25:23,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:25:23,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:25:23,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:25:23,321 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:25:23,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:25:23,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2256d897d/86672f6d8acd4000a3ed79310ac0a924/FLAG5cf519cc6 [2020-12-22 08:25:24,431 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:25:24,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:25:24,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2256d897d/86672f6d8acd4000a3ed79310ac0a924/FLAG5cf519cc6 [2020-12-22 08:25:24,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2256d897d/86672f6d8acd4000a3ed79310ac0a924 [2020-12-22 08:25:24,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:25:24,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:25:24,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:25:24,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:25:24,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:25:24,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:24" (1/1) ... [2020-12-22 08:25:24,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0ff8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:24, skipping insertion in model container [2020-12-22 08:25:24,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:24" (1/1) ... [2020-12-22 08:25:24,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:25:25,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:25:25,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12054,12067] [2020-12-22 08:25:25,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19320,19333] [2020-12-22 08:25:25,607 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21672,21685] [2020-12-22 08:25:25,616 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22792,22805] [2020-12-22 08:25:25,639 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26342,26355] [2020-12-22 08:25:25,650 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27465,27478] [2020-12-22 08:25:25,664 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[29780,29793] [2020-12-22 08:25:26,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:25:26,249 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:25:26,325 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12054,12067] [2020-12-22 08:25:26,377 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19320,19333] [2020-12-22 08:25:26,389 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21672,21685] [2020-12-22 08:25:26,394 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22792,22805] [2020-12-22 08:25:26,406 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26342,26355] [2020-12-22 08:25:26,411 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27465,27478] [2020-12-22 08:25:26,419 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[29780,29793] [2020-12-22 08:25:26,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:25:26,882 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:25:26,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26 WrapperNode [2020-12-22 08:25:26,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:25:26,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:25:26,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:25:26,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:25:26,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:26,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:25:27,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:25:27,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:25:27,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:25:27,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... [2020-12-22 08:25:27,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:25:27,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:25:27,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:25:27,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:25:27,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:25:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:25:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:25:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:25:27,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:25:31,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:25:31,645 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:25:31,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:31 BoogieIcfgContainer [2020-12-22 08:25:31,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:25:31,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:25:31,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:25:31,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:25:31,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:25:24" (1/3) ... [2020-12-22 08:25:31,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0228a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:25:31, skipping insertion in model container [2020-12-22 08:25:31,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:26" (2/3) ... [2020-12-22 08:25:31,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0228a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:25:31, skipping insertion in model container [2020-12-22 08:25:31,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:31" (3/3) ... [2020-12-22 08:25:31,659 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:25:31,665 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:25:31,673 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:25:31,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:25:31,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:25:31,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:25:31,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:25:31,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:25:31,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:25:31,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:25:31,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:25:31,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:25:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states. [2020-12-22 08:25:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:25:31,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:31,790 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:31,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2020-12-22 08:25:31,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:31,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413633505] [2020-12-22 08:25:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:32,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413633505] [2020-12-22 08:25:32,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:32,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934798254] [2020-12-22 08:25:32,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:32,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:32,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:32,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:32,424 INFO L87 Difference]: Start difference. First operand 1106 states. Second operand 3 states. [2020-12-22 08:25:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:32,766 INFO L93 Difference]: Finished difference Result 1465 states and 2651 transitions. [2020-12-22 08:25:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:32,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:25:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:32,800 INFO L225 Difference]: With dead ends: 1465 [2020-12-22 08:25:32,800 INFO L226 Difference]: Without dead ends: 1288 [2020-12-22 08:25:32,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-12-22 08:25:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1280. [2020-12-22 08:25:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-12-22 08:25:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1676 transitions. [2020-12-22 08:25:32,926 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1676 transitions. Word has length 64 [2020-12-22 08:25:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:32,926 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 1676 transitions. [2020-12-22 08:25:32,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1676 transitions. [2020-12-22 08:25:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:25:32,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:32,932 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:32,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:25:32,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:32,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1978887998, now seen corresponding path program 1 times [2020-12-22 08:25:32,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:32,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383212520] [2020-12-22 08:25:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:33,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383212520] [2020-12-22 08:25:33,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:33,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:33,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252884675] [2020-12-22 08:25:33,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:33,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:33,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:33,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:33,155 INFO L87 Difference]: Start difference. First operand 1280 states and 1676 transitions. Second operand 3 states. [2020-12-22 08:25:33,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:33,275 INFO L93 Difference]: Finished difference Result 1930 states and 2622 transitions. [2020-12-22 08:25:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:33,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:25:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:33,284 INFO L225 Difference]: With dead ends: 1930 [2020-12-22 08:25:33,284 INFO L226 Difference]: Without dead ends: 1576 [2020-12-22 08:25:33,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-12-22 08:25:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1568. [2020-12-22 08:25:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-12-22 08:25:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2092 transitions. [2020-12-22 08:25:33,344 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2092 transitions. Word has length 64 [2020-12-22 08:25:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:33,345 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2092 transitions. [2020-12-22 08:25:33,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2092 transitions. [2020-12-22 08:25:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:25:33,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:33,349 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:33,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:25:33,350 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1566940908, now seen corresponding path program 1 times [2020-12-22 08:25:33,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:33,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704692189] [2020-12-22 08:25:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:33,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704692189] [2020-12-22 08:25:33,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:33,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:25:33,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205775102] [2020-12-22 08:25:33,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:25:33,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:25:33,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:25:33,486 INFO L87 Difference]: Start difference. First operand 1568 states and 2092 transitions. Second operand 5 states. [2020-12-22 08:25:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:34,372 INFO L93 Difference]: Finished difference Result 3042 states and 4184 transitions. [2020-12-22 08:25:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:34,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:25:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:34,397 INFO L225 Difference]: With dead ends: 3042 [2020-12-22 08:25:34,398 INFO L226 Difference]: Without dead ends: 1783 [2020-12-22 08:25:34,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:25:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-12-22 08:25:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1775. [2020-12-22 08:25:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2020-12-22 08:25:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2455 transitions. [2020-12-22 08:25:34,479 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2455 transitions. Word has length 64 [2020-12-22 08:25:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:34,479 INFO L481 AbstractCegarLoop]: Abstraction has 1775 states and 2455 transitions. [2020-12-22 08:25:34,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:25:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2455 transitions. [2020-12-22 08:25:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:25:34,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:34,484 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:34,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:25:34,485 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:34,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2020-12-22 08:25:34,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:34,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599564397] [2020-12-22 08:25:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:34,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599564397] [2020-12-22 08:25:34,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:34,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:34,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294699850] [2020-12-22 08:25:34,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:34,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:34,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:34,624 INFO L87 Difference]: Start difference. First operand 1775 states and 2455 transitions. Second operand 3 states. [2020-12-22 08:25:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:34,748 INFO L93 Difference]: Finished difference Result 3469 states and 4871 transitions. [2020-12-22 08:25:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:34,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 08:25:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:34,763 INFO L225 Difference]: With dead ends: 3469 [2020-12-22 08:25:34,764 INFO L226 Difference]: Without dead ends: 2489 [2020-12-22 08:25:34,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-12-22 08:25:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2477. [2020-12-22 08:25:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2477 states. [2020-12-22 08:25:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3395 transitions. [2020-12-22 08:25:34,880 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3395 transitions. Word has length 65 [2020-12-22 08:25:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:34,880 INFO L481 AbstractCegarLoop]: Abstraction has 2477 states and 3395 transitions. [2020-12-22 08:25:34,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3395 transitions. [2020-12-22 08:25:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:25:34,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:34,885 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:34,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:25:34,886 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:34,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1759204869, now seen corresponding path program 1 times [2020-12-22 08:25:34,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:34,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178220432] [2020-12-22 08:25:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:35,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178220432] [2020-12-22 08:25:35,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:35,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:25:35,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803906137] [2020-12-22 08:25:35,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:25:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:35,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:25:35,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:25:35,008 INFO L87 Difference]: Start difference. First operand 2477 states and 3395 transitions. Second operand 6 states. [2020-12-22 08:25:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:36,046 INFO L93 Difference]: Finished difference Result 6572 states and 9226 transitions. [2020-12-22 08:25:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:36,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:25:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:36,070 INFO L225 Difference]: With dead ends: 6572 [2020-12-22 08:25:36,070 INFO L226 Difference]: Without dead ends: 4421 [2020-12-22 08:25:36,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:25:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2020-12-22 08:25:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4405. [2020-12-22 08:25:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2020-12-22 08:25:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6193 transitions. [2020-12-22 08:25:36,355 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6193 transitions. Word has length 65 [2020-12-22 08:25:36,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:36,356 INFO L481 AbstractCegarLoop]: Abstraction has 4405 states and 6193 transitions. [2020-12-22 08:25:36,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6193 transitions. [2020-12-22 08:25:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:25:36,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:36,363 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:36,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:25:36,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:36,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1314526104, now seen corresponding path program 1 times [2020-12-22 08:25:36,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:36,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337783382] [2020-12-22 08:25:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:36,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337783382] [2020-12-22 08:25:36,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:36,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:36,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103925624] [2020-12-22 08:25:36,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:36,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:36,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:36,487 INFO L87 Difference]: Start difference. First operand 4405 states and 6193 transitions. Second operand 3 states. [2020-12-22 08:25:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:36,976 INFO L93 Difference]: Finished difference Result 9752 states and 13852 transitions. [2020-12-22 08:25:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:36,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:25:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:37,012 INFO L225 Difference]: With dead ends: 9752 [2020-12-22 08:25:37,013 INFO L226 Difference]: Without dead ends: 6390 [2020-12-22 08:25:37,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2020-12-22 08:25:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 6358. [2020-12-22 08:25:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6358 states. [2020-12-22 08:25:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 8876 transitions. [2020-12-22 08:25:37,532 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 8876 transitions. Word has length 66 [2020-12-22 08:25:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:37,533 INFO L481 AbstractCegarLoop]: Abstraction has 6358 states and 8876 transitions. [2020-12-22 08:25:37,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 8876 transitions. [2020-12-22 08:25:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:25:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:37,544 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:37,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:25:37,545 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1742777677, now seen corresponding path program 1 times [2020-12-22 08:25:37,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:37,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71551028] [2020-12-22 08:25:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:37,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71551028] [2020-12-22 08:25:37,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:37,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:25:37,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553493693] [2020-12-22 08:25:37,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:25:37,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:37,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:25:37,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:25:37,713 INFO L87 Difference]: Start difference. First operand 6358 states and 8876 transitions. Second operand 6 states. [2020-12-22 08:25:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:39,096 INFO L93 Difference]: Finished difference Result 18062 states and 25457 transitions. [2020-12-22 08:25:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:39,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:25:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:39,161 INFO L225 Difference]: With dead ends: 18062 [2020-12-22 08:25:39,162 INFO L226 Difference]: Without dead ends: 12195 [2020-12-22 08:25:39,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:25:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2020-12-22 08:25:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 12119. [2020-12-22 08:25:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12119 states. [2020-12-22 08:25:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12119 states to 12119 states and 17042 transitions. [2020-12-22 08:25:39,983 INFO L78 Accepts]: Start accepts. Automaton has 12119 states and 17042 transitions. Word has length 66 [2020-12-22 08:25:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:39,983 INFO L481 AbstractCegarLoop]: Abstraction has 12119 states and 17042 transitions. [2020-12-22 08:25:39,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 12119 states and 17042 transitions. [2020-12-22 08:25:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:25:39,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:39,993 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:39,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:25:39,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1028195784, now seen corresponding path program 1 times [2020-12-22 08:25:39,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:39,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906879166] [2020-12-22 08:25:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:40,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906879166] [2020-12-22 08:25:40,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:40,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:25:40,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922754792] [2020-12-22 08:25:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:25:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:25:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:25:40,102 INFO L87 Difference]: Start difference. First operand 12119 states and 17042 transitions. Second operand 6 states. [2020-12-22 08:25:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:41,922 INFO L93 Difference]: Finished difference Result 36913 states and 52039 transitions. [2020-12-22 08:25:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:41,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:25:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:41,996 INFO L225 Difference]: With dead ends: 36913 [2020-12-22 08:25:41,996 INFO L226 Difference]: Without dead ends: 25285 [2020-12-22 08:25:42,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:25:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25285 states. [2020-12-22 08:25:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25285 to 25119. [2020-12-22 08:25:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25119 states. [2020-12-22 08:25:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25119 states to 25119 states and 35260 transitions. [2020-12-22 08:25:44,134 INFO L78 Accepts]: Start accepts. Automaton has 25119 states and 35260 transitions. Word has length 67 [2020-12-22 08:25:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:44,135 INFO L481 AbstractCegarLoop]: Abstraction has 25119 states and 35260 transitions. [2020-12-22 08:25:44,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25119 states and 35260 transitions. [2020-12-22 08:25:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:25:44,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:44,150 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:44,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:25:44,151 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 185593086, now seen corresponding path program 1 times [2020-12-22 08:25:44,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:44,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986175750] [2020-12-22 08:25:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:44,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986175750] [2020-12-22 08:25:44,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:44,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:25:44,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020271762] [2020-12-22 08:25:44,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:25:44,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:44,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:25:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:25:44,310 INFO L87 Difference]: Start difference. First operand 25119 states and 35260 transitions. Second operand 7 states. [2020-12-22 08:25:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:52,023 INFO L93 Difference]: Finished difference Result 149885 states and 212860 transitions. [2020-12-22 08:25:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:25:52,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:25:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:52,420 INFO L225 Difference]: With dead ends: 149885 [2020-12-22 08:25:52,421 INFO L226 Difference]: Without dead ends: 135460 [2020-12-22 08:25:52,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:25:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135460 states. [2020-12-22 08:25:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135460 to 25187. [2020-12-22 08:25:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25187 states. [2020-12-22 08:25:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25187 states to 25187 states and 35348 transitions. [2020-12-22 08:25:55,766 INFO L78 Accepts]: Start accepts. Automaton has 25187 states and 35348 transitions. Word has length 68 [2020-12-22 08:25:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:55,766 INFO L481 AbstractCegarLoop]: Abstraction has 25187 states and 35348 transitions. [2020-12-22 08:25:55,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:25:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 25187 states and 35348 transitions. [2020-12-22 08:25:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:25:55,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:55,779 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:55,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:25:55,780 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash 290423248, now seen corresponding path program 1 times [2020-12-22 08:25:55,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:55,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610077808] [2020-12-22 08:25:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:55,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610077808] [2020-12-22 08:25:55,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:55,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:25:55,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224415702] [2020-12-22 08:25:55,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:25:55,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:55,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:25:55,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:25:55,909 INFO L87 Difference]: Start difference. First operand 25187 states and 35348 transitions. Second operand 7 states. [2020-12-22 08:26:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:05,145 INFO L93 Difference]: Finished difference Result 120896 states and 171034 transitions. [2020-12-22 08:26:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:26:05,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:26:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:05,525 INFO L225 Difference]: With dead ends: 120896 [2020-12-22 08:26:05,525 INFO L226 Difference]: Without dead ends: 108316 [2020-12-22 08:26:05,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:26:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108316 states. [2020-12-22 08:26:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108316 to 25309. [2020-12-22 08:26:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25309 states. [2020-12-22 08:26:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25309 states to 25309 states and 35510 transitions. [2020-12-22 08:26:08,363 INFO L78 Accepts]: Start accepts. Automaton has 25309 states and 35510 transitions. Word has length 68 [2020-12-22 08:26:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:08,363 INFO L481 AbstractCegarLoop]: Abstraction has 25309 states and 35510 transitions. [2020-12-22 08:26:08,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:26:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 25309 states and 35510 transitions. [2020-12-22 08:26:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:26:08,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:08,373 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:26:08,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:26:08,373 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2020-12-22 08:26:08,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:08,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833065455] [2020-12-22 08:26:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:26:08,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833065455] [2020-12-22 08:26:08,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:08,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:26:08,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372500511] [2020-12-22 08:26:08,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:26:08,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:08,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:26:08,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:26:08,563 INFO L87 Difference]: Start difference. First operand 25309 states and 35510 transitions. Second operand 7 states. [2020-12-22 08:26:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:18,755 INFO L93 Difference]: Finished difference Result 105952 states and 149286 transitions. [2020-12-22 08:26:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:26:18,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:26:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:18,873 INFO L225 Difference]: With dead ends: 105952 [2020-12-22 08:26:18,874 INFO L226 Difference]: Without dead ends: 93682 [2020-12-22 08:26:18,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:26:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93682 states. [2020-12-22 08:26:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93682 to 25397. [2020-12-22 08:26:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25397 states. [2020-12-22 08:26:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25397 states to 25397 states and 35631 transitions. [2020-12-22 08:26:22,129 INFO L78 Accepts]: Start accepts. Automaton has 25397 states and 35631 transitions. Word has length 68 [2020-12-22 08:26:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:22,129 INFO L481 AbstractCegarLoop]: Abstraction has 25397 states and 35631 transitions. [2020-12-22 08:26:22,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:26:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25397 states and 35631 transitions. [2020-12-22 08:26:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:26:22,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:22,143 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:26:22,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:26:22,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2053099389, now seen corresponding path program 1 times [2020-12-22 08:26:22,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:22,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107315891] [2020-12-22 08:26:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:26:22,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107315891] [2020-12-22 08:26:22,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:22,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:26:22,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370114704] [2020-12-22 08:26:22,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:26:22,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:26:22,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:26:22,247 INFO L87 Difference]: Start difference. First operand 25397 states and 35631 transitions. Second operand 7 states. [2020-12-22 08:26:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:32,399 INFO L93 Difference]: Finished difference Result 95540 states and 134228 transitions. [2020-12-22 08:26:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:26:32,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:26:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:32,490 INFO L225 Difference]: With dead ends: 95540 [2020-12-22 08:26:32,490 INFO L226 Difference]: Without dead ends: 82572 [2020-12-22 08:26:32,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:26:32,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82572 states. [2020-12-22 08:26:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82572 to 25432. [2020-12-22 08:26:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25432 states. [2020-12-22 08:26:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25432 states to 25432 states and 35676 transitions. [2020-12-22 08:26:35,732 INFO L78 Accepts]: Start accepts. Automaton has 25432 states and 35676 transitions. Word has length 68 [2020-12-22 08:26:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:35,733 INFO L481 AbstractCegarLoop]: Abstraction has 25432 states and 35676 transitions. [2020-12-22 08:26:35,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:26:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25432 states and 35676 transitions. [2020-12-22 08:26:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:26:35,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:35,744 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:26:35,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:26:35,744 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2020-12-22 08:26:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:35,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906318904] [2020-12-22 08:26:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:26:36,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906318904] [2020-12-22 08:26:36,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:36,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:26:36,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88404181] [2020-12-22 08:26:36,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:26:36,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:36,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:26:36,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:26:36,083 INFO L87 Difference]: Start difference. First operand 25432 states and 35676 transitions. Second operand 8 states. [2020-12-22 08:26:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:43,834 INFO L93 Difference]: Finished difference Result 72559 states and 102783 transitions. [2020-12-22 08:26:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:26:43,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-12-22 08:26:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:43,893 INFO L225 Difference]: With dead ends: 72559 [2020-12-22 08:26:43,893 INFO L226 Difference]: Without dead ends: 50448 [2020-12-22 08:26:43,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:26:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50448 states. [2020-12-22 08:26:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50448 to 24861. [2020-12-22 08:26:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24861 states. [2020-12-22 08:26:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24861 states to 24861 states and 34934 transitions. [2020-12-22 08:26:47,195 INFO L78 Accepts]: Start accepts. Automaton has 24861 states and 34934 transitions. Word has length 69 [2020-12-22 08:26:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:47,196 INFO L481 AbstractCegarLoop]: Abstraction has 24861 states and 34934 transitions. [2020-12-22 08:26:47,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:26:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 24861 states and 34934 transitions. [2020-12-22 08:26:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:26:47,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:47,203 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:26:47,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:26:47,203 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:47,204 INFO L82 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2020-12-22 08:26:47,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:47,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356639622] [2020-12-22 08:26:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:26:47,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356639622] [2020-12-22 08:26:47,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:47,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:26:47,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145663588] [2020-12-22 08:26:47,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:26:47,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:47,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:26:47,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:26:47,360 INFO L87 Difference]: Start difference. First operand 24861 states and 34934 transitions. Second operand 9 states. [2020-12-22 08:27:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:03,604 INFO L93 Difference]: Finished difference Result 125027 states and 177613 transitions. [2020-12-22 08:27:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:27:03,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:27:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:03,940 INFO L225 Difference]: With dead ends: 125027 [2020-12-22 08:27:03,940 INFO L226 Difference]: Without dead ends: 103874 [2020-12-22 08:27:03,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:27:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103874 states. [2020-12-22 08:27:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103874 to 24675. [2020-12-22 08:27:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24675 states. [2020-12-22 08:27:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24675 states to 24675 states and 34687 transitions. [2020-12-22 08:27:08,142 INFO L78 Accepts]: Start accepts. Automaton has 24675 states and 34687 transitions. Word has length 69 [2020-12-22 08:27:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:08,142 INFO L481 AbstractCegarLoop]: Abstraction has 24675 states and 34687 transitions. [2020-12-22 08:27:08,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:27:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24675 states and 34687 transitions. [2020-12-22 08:27:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:27:08,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:08,149 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:08,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:27:08,149 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:08,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2020-12-22 08:27:08,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:08,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306501363] [2020-12-22 08:27:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:08,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306501363] [2020-12-22 08:27:08,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:08,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:27:08,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232468668] [2020-12-22 08:27:08,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:27:08,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:27:08,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:27:08,334 INFO L87 Difference]: Start difference. First operand 24675 states and 34687 transitions. Second operand 9 states. [2020-12-22 08:27:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:20,130 INFO L93 Difference]: Finished difference Result 84264 states and 119993 transitions. [2020-12-22 08:27:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:27:20,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:27:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:20,208 INFO L225 Difference]: With dead ends: 84264 [2020-12-22 08:27:20,208 INFO L226 Difference]: Without dead ends: 63429 [2020-12-22 08:27:20,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:27:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63429 states. [2020-12-22 08:27:24,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63429 to 24647. [2020-12-22 08:27:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24647 states. [2020-12-22 08:27:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24647 states to 24647 states and 34643 transitions. [2020-12-22 08:27:24,360 INFO L78 Accepts]: Start accepts. Automaton has 24647 states and 34643 transitions. Word has length 69 [2020-12-22 08:27:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:24,360 INFO L481 AbstractCegarLoop]: Abstraction has 24647 states and 34643 transitions. [2020-12-22 08:27:24,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:27:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 24647 states and 34643 transitions. [2020-12-22 08:27:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:27:24,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:24,366 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:24,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:27:24,367 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2020-12-22 08:27:24,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:24,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403030836] [2020-12-22 08:27:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403030836] [2020-12-22 08:27:24,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:24,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:27:24,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143660299] [2020-12-22 08:27:24,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:27:24,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:27:24,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:27:24,549 INFO L87 Difference]: Start difference. First operand 24647 states and 34643 transitions. Second operand 9 states. [2020-12-22 08:27:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:37,841 INFO L93 Difference]: Finished difference Result 84175 states and 119860 transitions. [2020-12-22 08:27:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:27:37,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:27:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:37,920 INFO L225 Difference]: With dead ends: 84175 [2020-12-22 08:27:37,921 INFO L226 Difference]: Without dead ends: 63381 [2020-12-22 08:27:37,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:27:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63381 states. [2020-12-22 08:27:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63381 to 24638. [2020-12-22 08:27:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24638 states. [2020-12-22 08:27:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24638 states to 24638 states and 34626 transitions. [2020-12-22 08:27:42,607 INFO L78 Accepts]: Start accepts. Automaton has 24638 states and 34626 transitions. Word has length 69 [2020-12-22 08:27:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:42,608 INFO L481 AbstractCegarLoop]: Abstraction has 24638 states and 34626 transitions. [2020-12-22 08:27:42,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:27:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 24638 states and 34626 transitions. [2020-12-22 08:27:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:27:42,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:42,613 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:42,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:27:42,614 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:42,614 INFO L82 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2020-12-22 08:27:42,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:42,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447132638] [2020-12-22 08:27:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:43,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447132638] [2020-12-22 08:27:43,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:43,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:27:43,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130244264] [2020-12-22 08:27:43,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:27:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:27:43,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:27:43,657 INFO L87 Difference]: Start difference. First operand 24638 states and 34626 transitions. Second operand 18 states. [2020-12-22 08:27:43,794 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 08:27:44,477 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:27:44,949 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:27:45,120 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-22 08:27:45,892 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:27:46,372 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:27:46,513 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:27:46,881 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:27:47,146 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:27:47,539 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:27:48,219 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:27:48,874 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:27:52,274 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:28:07,027 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:28:09,151 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:28:11,593 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 08:28:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:35,307 INFO L93 Difference]: Finished difference Result 230689 states and 329854 transitions. [2020-12-22 08:28:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 08:28:35,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-12-22 08:28:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:35,886 INFO L225 Difference]: With dead ends: 230689 [2020-12-22 08:28:35,886 INFO L226 Difference]: Without dead ends: 209894 [2020-12-22 08:28:35,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 08:28:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209894 states. [2020-12-22 08:28:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209894 to 24620. [2020-12-22 08:28:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24620 states. [2020-12-22 08:28:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24620 states to 24620 states and 34593 transitions. [2020-12-22 08:28:42,526 INFO L78 Accepts]: Start accepts. Automaton has 24620 states and 34593 transitions. Word has length 70 [2020-12-22 08:28:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:42,526 INFO L481 AbstractCegarLoop]: Abstraction has 24620 states and 34593 transitions. [2020-12-22 08:28:42,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:28:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 24620 states and 34593 transitions. [2020-12-22 08:28:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:28:42,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:42,533 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:28:42,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:28:42,534 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1142484158, now seen corresponding path program 1 times [2020-12-22 08:28:42,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:42,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371136106] [2020-12-22 08:28:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:28:42,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371136106] [2020-12-22 08:28:42,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:42,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:28:42,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615177871] [2020-12-22 08:28:42,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:28:42,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:42,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:28:42,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:28:42,955 INFO L87 Difference]: Start difference. First operand 24620 states and 34593 transitions. Second operand 11 states. [2020-12-22 08:28:43,080 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:28:43,489 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:28:43,935 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:28:44,580 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:28:44,894 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:28:45,041 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 08:28:45,387 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 08:28:46,010 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-22 08:28:46,375 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:28:51,637 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:28:52,334 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:28:55,017 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:29:04,634 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 08:29:05,703 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 08:29:06,007 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:29:10,197 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34