/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_LAZY.epf -i ../../../trunk/examples/svcomp/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:35:53,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:35:53,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:35:53,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:35:53,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:35:53,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:35:53,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:35:53,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:35:53,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:35:53,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:35:53,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:35:53,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:35:53,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:35:53,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:35:53,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:35:53,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:35:53,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:35:53,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:35:53,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:35:53,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:35:53,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:35:53,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:35:53,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:35:53,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:35:53,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:35:53,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:35:53,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:35:53,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:35:53,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:35:53,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:35:53,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:35:53,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:35:53,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:35:53,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:35:53,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:35:53,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:35:53,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:35:53,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:35:53,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:35:53,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:35:53,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:35:53,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:35:53,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:35:53,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:35:53,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:35:53,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:35:53,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:35:53,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:35:53,262 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:35:53,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:35:53,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:35:53,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:35:53,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:35:53,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:35:53,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:35:53,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:35:53,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:35:53,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:35:53,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:35:53,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:35:53,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:35:53,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:35:53,267 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:35:53,267 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:35:53,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:35:53,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:35:53,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:35:53,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:35:53,473 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:35:53,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2022-01-10 14:35:53,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee5245cb/189b274fbaec46f483e38949e7e55085/FLAG4cf33ba3b [2022-01-10 14:35:53,829 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:35:53,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c [2022-01-10 14:35:53,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee5245cb/189b274fbaec46f483e38949e7e55085/FLAG4cf33ba3b [2022-01-10 14:35:54,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee5245cb/189b274fbaec46f483e38949e7e55085 [2022-01-10 14:35:54,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:35:54,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:35:54,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:35:54,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:35:54,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:35:54,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e98c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54, skipping insertion in model container [2022-01-10 14:35:54,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:35:54,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:35:54,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c[485,498] [2022-01-10 14:35:54,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:35:54,476 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:35:54,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/duplets.c[485,498] [2022-01-10 14:35:54,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:35:54,522 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:35:54,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54 WrapperNode [2022-01-10 14:35:54,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:35:54,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:35:54,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:35:54,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:35:54,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,569 INFO L137 Inliner]: procedures = 23, calls = 43, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 150 [2022-01-10 14:35:54,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:35:54,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:35:54,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:35:54,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:35:54,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:35:54,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:35:54,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:35:54,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:35:54,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:54,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:35:54,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:54,644 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) [2022-01-10 14:35:54,674 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 [2022-01-10 14:35:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:35:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:35:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 14:35:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 14:35:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 14:35:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:35:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:35:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 14:35:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 14:35:54,780 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:35:54,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:35:54,987 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:35:54,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:35:54,991 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:35:54,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:54 BoogieIcfgContainer [2022-01-10 14:35:54,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:35:54,993 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:35:54,993 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:35:55,008 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:35:55,010 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:54" (1/1) ... [2022-01-10 14:35:55,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:35:55 BasicIcfg [2022-01-10 14:35:55,090 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:35:55,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:35:55,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:35:55,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:35:55,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:54" (1/4) ... [2022-01-10 14:35:55,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f29d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:55, skipping insertion in model container [2022-01-10 14:35:55,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54" (2/4) ... [2022-01-10 14:35:55,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f29d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:55, skipping insertion in model container [2022-01-10 14:35:55,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:54" (3/4) ... [2022-01-10 14:35:55,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f29d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:35:55, skipping insertion in model container [2022-01-10 14:35:55,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:35:55" (4/4) ... [2022-01-10 14:35:55,095 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.cTransformedIcfg [2022-01-10 14:35:55,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:35:55,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 14:35:55,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:35:55,134 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 [2022-01-10 14:35:55,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 14:35:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 14:35:55,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:55,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:55,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:35:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -876549677, now seen corresponding path program 1 times [2022-01-10 14:35:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:55,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125021764] [2022-01-10 14:35:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:55,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:55,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:55,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125021764] [2022-01-10 14:35:55,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125021764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:55,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:55,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:35:55,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578126698] [2022-01-10 14:35:55,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:55,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:35:55,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:35:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:35:55,364 INFO L87 Difference]: Start difference. First operand has 47 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:55,385 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2022-01-10 14:35:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:35:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 14:35:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:55,395 INFO L225 Difference]: With dead ends: 91 [2022-01-10 14:35:55,395 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 14:35:55,397 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 [2022-01-10 14:35:55,400 INFO L933 BasicCegarLoop]: 52 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, 52 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 [2022-01-10 14:35:55,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:35:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 14:35:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-10 14:35:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-01-10 14:35:55,427 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 18 [2022-01-10 14:35:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:55,427 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-01-10 14:35:55,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-01-10 14:35:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 14:35:55,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:55,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:55,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:35:55,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:35:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 289219216, now seen corresponding path program 1 times [2022-01-10 14:35:55,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390695040] [2022-01-10 14:35:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:55,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:55,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390695040] [2022-01-10 14:35:55,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390695040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:55,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:55,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:35:55,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138725170] [2022-01-10 14:35:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:55,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:35:55,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:35:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:35:55,840 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:55,953 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2022-01-10 14:35:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:35:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 14:35:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:55,956 INFO L225 Difference]: With dead ends: 82 [2022-01-10 14:35:55,956 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 14:35:55,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:35:55,958 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:55,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:35:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 14:35:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-10 14:35:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 43 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) [2022-01-10 14:35:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-01-10 14:35:55,971 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 18 [2022-01-10 14:35:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:55,972 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-01-10 14:35:55,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-01-10 14:35:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:35:55,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:55,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:35:55,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:35:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 252406775, now seen corresponding path program 1 times [2022-01-10 14:35:55,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:55,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452212113] [2022-01-10 14:35:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:35:56,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452212113] [2022-01-10 14:35:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452212113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:56,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:56,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:35:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014685299] [2022-01-10 14:35:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:35:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:35:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:35:56,288 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:56,405 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2022-01-10 14:35:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:35:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 14:35:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:56,406 INFO L225 Difference]: With dead ends: 98 [2022-01-10 14:35:56,407 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 14:35:56,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:35:56,411 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 182 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:56,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:35:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 14:35:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2022-01-10 14:35:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.25) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-01-10 14:35:56,419 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 19 [2022-01-10 14:35:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:56,419 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-01-10 14:35:56,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-01-10 14:35:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 14:35:56,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:56,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:56,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:35:56,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:35:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -733869040, now seen corresponding path program 1 times [2022-01-10 14:35:56,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:56,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757310250] [2022-01-10 14:35:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:56,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:35:56,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757310250] [2022-01-10 14:35:56,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757310250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:56,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:56,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:35:56,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098002968] [2022-01-10 14:35:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:56,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:35:56,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:35:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:35:56,490 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:56,526 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-01-10 14:35:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:35:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 14:35:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:56,528 INFO L225 Difference]: With dead ends: 69 [2022-01-10 14:35:56,528 INFO L226 Difference]: Without dead ends: 67 [2022-01-10 14:35:56,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:35:56,536 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:56,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:35:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-10 14:35:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2022-01-10 14:35:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-01-10 14:35:56,549 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 20 [2022-01-10 14:35:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:56,550 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-01-10 14:35:56,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-01-10 14:35:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 14:35:56,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:56,551 INFO L514 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] [2022-01-10 14:35:56,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:35:56,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:35:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1795424626, now seen corresponding path program 1 times [2022-01-10 14:35:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:56,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648951140] [2022-01-10 14:35:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:57,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648951140] [2022-01-10 14:35:57,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648951140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:35:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103121061] [2022-01-10 14:35:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:57,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:35:57,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:57,388 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) [2022-01-10 14:35:57,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:35:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:57,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-10 14:35:57,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:36:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:00,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:36:00,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103121061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:36:00,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:36:00,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2022-01-10 14:36:00,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868651431] [2022-01-10 14:36:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:36:00,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 14:36:00,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 14:36:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-01-10 14:36:00,619 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:01,352 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2022-01-10 14:36:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:36:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 14:36:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:01,360 INFO L225 Difference]: With dead ends: 130 [2022-01-10 14:36:01,360 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 14:36:01,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2022-01-10 14:36:01,361 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 609 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:01,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 119 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:36:01,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 14:36:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 48. [2022-01-10 14:36:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-01-10 14:36:01,367 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 22 [2022-01-10 14:36:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:01,368 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-01-10 14:36:01,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-01-10 14:36:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 14:36:01,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:01,368 INFO L514 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] [2022-01-10 14:36:01,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:36:01,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:01,573 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1889606059, now seen corresponding path program 1 times [2022-01-10 14:36:01,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:01,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531289846] [2022-01-10 14:36:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:01,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:36:02,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:36:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531289846] [2022-01-10 14:36:02,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531289846] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:36:02,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372886942] [2022-01-10 14:36:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:02,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:02,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:36:02,209 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) [2022-01-10 14:36:02,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:36:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:02,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 14:36:02,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:36:02,598 INFO L353 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-01-10 14:36:02,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 63 [2022-01-10 14:36:02,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2022-01-10 14:36:02,645 INFO L353 Elim1Store]: treesize reduction 27, result has 50.0 percent of original size [2022-01-10 14:36:02,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 83 [2022-01-10 14:36:04,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 27 [2022-01-10 14:36:04,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 28 [2022-01-10 14:36:04,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-01-10 14:36:04,403 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 13 treesize of output 9 [2022-01-10 14:36:05,004 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 14:36:05,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 138 [2022-01-10 14:36:05,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 111 [2022-01-10 14:36:06,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:36:06,196 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-01-10 14:36:06,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 180 [2022-01-10 14:36:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:06,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:36:06,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372886942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:36:06,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:36:06,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-01-10 14:36:06,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538532569] [2022-01-10 14:36:06,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:36:06,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:36:06,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:36:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-01-10 14:36:06,930 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 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) [2022-01-10 14:36:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:07,273 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2022-01-10 14:36:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:36:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 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) Word has length 24 [2022-01-10 14:36:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:07,274 INFO L225 Difference]: With dead ends: 75 [2022-01-10 14:36:07,274 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 14:36:07,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:36:07,275 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 36 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:07,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 208 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-01-10 14:36:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 14:36:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2022-01-10 14:36:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.24) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-01-10 14:36:07,283 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 24 [2022-01-10 14:36:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:07,284 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-01-10 14:36:07,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 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) [2022-01-10 14:36:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-01-10 14:36:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 14:36:07,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:07,285 INFO L514 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] [2022-01-10 14:36:07,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:36:07,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 14:36:07,492 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1889576268, now seen corresponding path program 1 times [2022-01-10 14:36:07,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:07,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987524978] [2022-01-10 14:36:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:07,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:36:07,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:36:07,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987524978] [2022-01-10 14:36:07,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987524978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:36:07,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802232658] [2022-01-10 14:36:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:07,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:36:07,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:36:07,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:36:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:08,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-10 14:36:08,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:36:08,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-10 14:36:08,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 14:36:08,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 14:36:08,142 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 22 treesize of output 10 [2022-01-10 14:36:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:08,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:36:08,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802232658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:36:08,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:36:08,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-01-10 14:36:08,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209874709] [2022-01-10 14:36:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:36:08,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:36:08,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:36:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:36:08,170 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-01-10 14:36:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:08,258 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2022-01-10 14:36:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:36:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) Word has length 24 [2022-01-10 14:36:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:08,259 INFO L225 Difference]: With dead ends: 99 [2022-01-10 14:36:08,259 INFO L226 Difference]: Without dead ends: 81 [2022-01-10 14:36:08,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-10 14:36:08,260 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:08,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 143 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:36:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-10 14:36:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2022-01-10 14:36:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 61 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-01-10 14:36:08,268 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 24 [2022-01-10 14:36:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-01-10 14:36:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-01-10 14:36:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-01-10 14:36:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 14:36:08,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:08,269 INFO L514 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] [2022-01-10 14:36:08,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 14:36:08,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:08,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash -550630067, now seen corresponding path program 1 times [2022-01-10 14:36:08,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:08,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986484812] [2022-01-10 14:36:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:08,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:08,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:36:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986484812] [2022-01-10 14:36:08,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986484812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:36:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118478948] [2022-01-10 14:36:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:08,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:36:08,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:36:08,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 14:36:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:08,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 14:36:08,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:36:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:08,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:36:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:08,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118478948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:36:08,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:36:08,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-01-10 14:36:08,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7133022] [2022-01-10 14:36:08,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:36:08,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 14:36:08,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 14:36:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:36:08,962 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:09,213 INFO L93 Difference]: Finished difference Result 193 states and 209 transitions. [2022-01-10 14:36:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 14:36:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-10 14:36:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:09,214 INFO L225 Difference]: With dead ends: 193 [2022-01-10 14:36:09,214 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 14:36:09,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-01-10 14:36:09,215 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 381 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:09,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 378 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:36:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 14:36:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 65. [2022-01-10 14:36:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-01-10 14:36:09,228 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 25 [2022-01-10 14:36:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:09,228 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-01-10 14:36:09,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-01-10 14:36:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 14:36:09,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:09,229 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:36:09,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 14:36:09,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:09,445 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 357056852, now seen corresponding path program 1 times [2022-01-10 14:36:09,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:09,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945069150] [2022-01-10 14:36:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:09,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:10,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:36:10,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945069150] [2022-01-10 14:36:10,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945069150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:36:10,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033152178] [2022-01-10 14:36:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:10,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:36:10,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:36:10,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 14:36:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:10,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-10 14:36:10,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:36:10,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:36:10,571 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-01-10 14:36:10,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-01-10 14:36:11,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:36:11,903 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 14:36:11,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 134 [2022-01-10 14:36:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:12,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:36:12,324 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 196 treesize of output 184 [2022-01-10 14:36:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:36:13,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033152178] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:36:13,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:36:13,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 25 [2022-01-10 14:36:13,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081449785] [2022-01-10 14:36:13,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:36:13,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 14:36:13,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 14:36:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2022-01-10 14:36:13,985 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:16,663 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2022-01-10 14:36:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 14:36:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 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 27 [2022-01-10 14:36:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:16,664 INFO L225 Difference]: With dead ends: 194 [2022-01-10 14:36:16,664 INFO L226 Difference]: Without dead ends: 135 [2022-01-10 14:36:16,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 14:36:16,666 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 275 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:16,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 641 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 501 Invalid, 0 Unknown, 45 Unchecked, 0.7s Time] [2022-01-10 14:36:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-01-10 14:36:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 71. [2022-01-10 14:36:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-01-10 14:36:16,680 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 27 [2022-01-10 14:36:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:16,681 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-01-10 14:36:16,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-01-10 14:36:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 14:36:16,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:16,682 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:36:16,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 14:36:16,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:36:16,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 328846529, now seen corresponding path program 1 times [2022-01-10 14:36:16,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610264941] [2022-01-10 14:36:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:16,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:36:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 14:36:17,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:36:17,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610264941] [2022-01-10 14:36:17,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610264941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:36:17,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:36:17,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 14:36:17,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433710026] [2022-01-10 14:36:17,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:36:17,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 14:36:17,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 14:36:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:36:17,242 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:36:17,833 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2022-01-10 14:36:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 14:36:17,833 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-10 14:36:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:36:17,834 INFO L225 Difference]: With dead ends: 119 [2022-01-10 14:36:17,834 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 14:36:17,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-01-10 14:36:17,835 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 324 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:36:17,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 193 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:36:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 14:36:17,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-01-10 14:36:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 81 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2022-01-10 14:36:17,850 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 29 [2022-01-10 14:36:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:36:17,850 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2022-01-10 14:36:17,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:36:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2022-01-10 14:36:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 14:36:17,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:36:17,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:36:17,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:36:17,851 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:36:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:36:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 909888031, now seen corresponding path program 2 times [2022-01-10 14:36:17,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:36:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386154686] [2022-01-10 14:36:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:36:17,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:36:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat