/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/loops/insertion_sort-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:57:29,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:57:29,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:57:29,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:57:29,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:57:29,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:57:29,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:57:29,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:57:29,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:57:29,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:57:29,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:57:29,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:57:29,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:57:29,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:57:29,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:57:29,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:57:29,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:57:29,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:57:29,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:57:29,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:57:29,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:57:29,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:57:29,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:57:29,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:57:29,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:57:29,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:57:29,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:57:29,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:57:29,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:57:29,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:57:29,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:57:29,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:57:29,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:57:29,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:57:29,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:57:29,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:57:29,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:57:29,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:57:29,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:57:29,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:57:29,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:57:29,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 01:57:29,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:57:29,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:57:29,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:57:29,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:57:29,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:57:29,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:57:29,473 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:57:29,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:57:29,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:57:29,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:57:29,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:57:29,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:57:29,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:57:29,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:57:29,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:57:29,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:57:29,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:57:29,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:57:29,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:57:29,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:57:29,478 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:57:29,478 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:57:29,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:57:29,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:57:29,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:57:29,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:57:29,682 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:57:29,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2022-01-11 01:57:29,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c617d6c9/d037f70fb26146a4b2947acba2ae6c6a/FLAG82145fef0 [2022-01-11 01:57:30,104 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:57:30,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2022-01-11 01:57:30,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c617d6c9/d037f70fb26146a4b2947acba2ae6c6a/FLAG82145fef0 [2022-01-11 01:57:30,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c617d6c9/d037f70fb26146a4b2947acba2ae6c6a [2022-01-11 01:57:30,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:57:30,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:57:30,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:57:30,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:57:30,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:57:30,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf2d037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30, skipping insertion in model container [2022-01-11 01:57:30,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:57:30,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:57:30,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c[328,341] [2022-01-11 01:57:30,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:57:30,285 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:57:30,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c[328,341] [2022-01-11 01:57:30,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:57:30,316 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:57:30,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30 WrapperNode [2022-01-11 01:57:30,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:57:30,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:57:30,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:57:30,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:57:30,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,351 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-01-11 01:57:30,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:57:30,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:57:30,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:57:30,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:57:30,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:57:30,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:57:30,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:57:30,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:57:30,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:57:30,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:57:30,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:57:30,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:57:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:57:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 01:57:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 01:57:30,516 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:57:30,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:57:30,697 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:57:30,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:57:30,715 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-11 01:57:30,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:57:30 BoogieIcfgContainer [2022-01-11 01:57:30,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:57:30,717 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:57:30,717 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:57:30,718 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:57:30,720 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:57:30" (1/1) ... [2022-01-11 01:57:30,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:57:30 BasicIcfg [2022-01-11 01:57:30,827 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:57:30,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:57:30,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:57:30,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:57:30,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:57:30" (1/4) ... [2022-01-11 01:57:30,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a9054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:57:30, skipping insertion in model container [2022-01-11 01:57:30,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:57:30" (2/4) ... [2022-01-11 01:57:30,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a9054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:57:30, skipping insertion in model container [2022-01-11 01:57:30,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:57:30" (3/4) ... [2022-01-11 01:57:30,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a9054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:57:30, skipping insertion in model container [2022-01-11 01:57:30,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:57:30" (4/4) ... [2022-01-11 01:57:30,835 INFO L111 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.cTransformedIcfg [2022-01-11 01:57:30,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:57:30,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 01:57:30,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:57:30,900 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:57:30,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 01:57:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 01:57:30,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:57:30,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:57:30,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:57:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:57:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2094748540, now seen corresponding path program 1 times [2022-01-11 01:57:30,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:57:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193708965] [2022-01-11 01:57:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:30,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:57:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:31,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:57:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193708965] [2022-01-11 01:57:31,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193708965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:57:31,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:57:31,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:57:31,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921000918] [2022-01-11 01:57:31,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:57:31,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 01:57:31,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:57:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 01:57:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:57:31,091 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:57:31,105 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-01-11 01:57:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 01:57:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 01:57:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:57:31,112 INFO L225 Difference]: With dead ends: 40 [2022-01-11 01:57:31,113 INFO L226 Difference]: Without dead ends: 18 [2022-01-11 01:57:31,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:57:31,119 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:57:31,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:57:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-11 01:57:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-11 01:57:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-01-11 01:57:31,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2022-01-11 01:57:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:57:31,150 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-01-11 01:57:31,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-01-11 01:57:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 01:57:31,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:57:31,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:57:31,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:57:31,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:57:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:57:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1311791554, now seen corresponding path program 1 times [2022-01-11 01:57:31,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:57:31,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195607557] [2022-01-11 01:57:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:31,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:57:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:31,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:57:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195607557] [2022-01-11 01:57:31,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195607557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:57:31,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:57:31,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:57:31,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172504946] [2022-01-11 01:57:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:57:31,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:57:31,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:57:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:57:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:57:31,289 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:57:31,365 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-01-11 01:57:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:57:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 01:57:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:57:31,366 INFO L225 Difference]: With dead ends: 37 [2022-01-11 01:57:31,366 INFO L226 Difference]: Without dead ends: 20 [2022-01-11 01:57:31,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:57:31,367 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:57:31,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:57:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-11 01:57:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-01-11 01:57:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-11 01:57:31,371 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-01-11 01:57:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:57:31,373 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-11 01:57:31,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-11 01:57:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 01:57:31,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:57:31,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:57:31,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:57:31,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:57:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:57:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1731590684, now seen corresponding path program 1 times [2022-01-11 01:57:31,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:57:31,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17564622] [2022-01-11 01:57:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:31,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:57:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 01:57:31,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:57:31,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17564622] [2022-01-11 01:57:31,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17564622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:57:31,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:57:31,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:57:31,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085723112] [2022-01-11 01:57:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:57:31,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:57:31,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:57:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:57:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:57:31,466 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:57:31,521 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-01-11 01:57:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 01:57:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 01:57:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:57:31,522 INFO L225 Difference]: With dead ends: 34 [2022-01-11 01:57:31,522 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 01:57:31,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:57:31,528 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:57:31,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 57 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:57:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 01:57:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2022-01-11 01:57:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-11 01:57:31,535 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2022-01-11 01:57:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:57:31,536 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-11 01:57:31,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-11 01:57:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 01:57:31,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:57:31,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:57:31,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:57:31,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:57:31,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:57:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2005666803, now seen corresponding path program 1 times [2022-01-11 01:57:31,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:57:31,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196268132] [2022-01-11 01:57:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:31,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:57:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:31,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:57:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196268132] [2022-01-11 01:57:31,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196268132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:57:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849852818] [2022-01-11 01:57:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:31,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:57:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:57:31,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 01:57:31,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 01:57:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:31,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 01:57:31,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:57:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:31,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:57:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:31,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849852818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:57:31,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:57:31,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-11 01:57:31,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765459218] [2022-01-11 01:57:31,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:57:31,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 01:57:31,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:57:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 01:57:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-11 01:57:31,972 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:57:32,042 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-01-11 01:57:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:57:32,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-11 01:57:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:57:32,043 INFO L225 Difference]: With dead ends: 43 [2022-01-11 01:57:32,044 INFO L226 Difference]: Without dead ends: 28 [2022-01-11 01:57:32,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-11 01:57:32,050 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:57:32,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:57:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-11 01:57:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-01-11 01:57:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-01-11 01:57:32,056 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 17 [2022-01-11 01:57:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:57:32,056 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-01-11 01:57:32,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:57:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-01-11 01:57:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 01:57:32,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:57:32,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:57:32,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 01:57:32,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:57:32,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:57:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:57:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 992971243, now seen corresponding path program 2 times [2022-01-11 01:57:32,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:57:32,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772757793] [2022-01-11 01:57:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:57:32,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:57:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:57:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:44,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:57:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772757793] [2022-01-11 01:57:44,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772757793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:57:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192577232] [2022-01-11 01:57:44,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 01:57:44,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:57:44,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:57:44,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 01:57:44,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 01:57:45,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 01:57:45,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 01:57:45,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-11 01:57:45,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:57:48,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 01:57:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 01:57:48,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 01:57:48,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 110 [2022-01-11 01:57:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:57:51,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:58:08,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 351 [2022-01-11 01:58:08,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 01:58:08,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 01:58:08,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 01:58:08,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 01:58:20,367 WARN L228 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 47 DAG size of output: 30 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-11 01:58:20,368 INFO L353 Elim1Store]: treesize reduction 33, result has 66.7 percent of original size [2022-01-11 01:58:20,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 279 treesize of output 192 [2022-01-11 01:58:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 01:58:21,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192577232] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:58:21,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:58:21,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 12] total 36 [2022-01-11 01:58:21,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454016933] [2022-01-11 01:58:21,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:58:21,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-11 01:58:21,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:58:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-11 01:58:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1061, Unknown=3, NotChecked=0, Total=1260 [2022-01-11 01:58:21,968 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:58:23,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 01:58:42,519 WARN L228 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 205 DAG size of output: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)