/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:42:04,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:42:04,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:42:04,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:42:04,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:42:04,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:42:04,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:42:04,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:42:04,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:42:04,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:42:04,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:42:04,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:42:04,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:42:04,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:42:04,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:42:04,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:42:04,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:42:04,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:42:04,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:42:04,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:42:04,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:42:04,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:42:04,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:42:04,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:42:04,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:42:04,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:42:04,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:42:04,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:42:04,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:42:04,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:42:04,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:42:04,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:42:04,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:42:04,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:42:04,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:42:04,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:42:04,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:42:04,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:42:04,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:42:04,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:42:04,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:42:04,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:42:04,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:42:04,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:42:04,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:42:04,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:42:04,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:42:04,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:42:04,283 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:42:04,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:42:04,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:42:04,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:42:04,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:42:04,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:42:04,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:42:04,290 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:42:04,290 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:42:04,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:42:04,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:42:04,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:42:04,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:42:04,503 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:42:04,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c [2022-01-11 02:42:04,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf021cc/bbc79e6b16bb411eb86a3f47f45ec7f1/FLAG5d3f0d4cd [2022-01-11 02:42:04,876 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:42:04,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c [2022-01-11 02:42:04,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf021cc/bbc79e6b16bb411eb86a3f47f45ec7f1/FLAG5d3f0d4cd [2022-01-11 02:42:05,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adf021cc/bbc79e6b16bb411eb86a3f47f45ec7f1 [2022-01-11 02:42:05,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:42:05,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:42:05,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:42:05,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:42:05,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:42:05,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba4f452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05, skipping insertion in model container [2022-01-11 02:42:05,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:42:05,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:42:05,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2022-01-11 02:42:05,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:42:05,483 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:42:05,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2022-01-11 02:42:05,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:42:05,528 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:42:05,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05 WrapperNode [2022-01-11 02:42:05,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:42:05,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:42:05,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:42:05,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:42:05,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,566 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2022-01-11 02:42:05,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:42:05,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:42:05,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:42:05,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:42:05,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:42:05,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:42:05,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:42:05,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:42:05,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:42:05,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:05,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:42:05,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:42:05,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:42:05,733 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:42:05,735 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:42:05,858 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:42:05,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:42:05,863 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 02:42:05,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:42:05 BoogieIcfgContainer [2022-01-11 02:42:05,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:42:05,865 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:42:05,865 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:42:05,867 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:42:05,869 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:42:05" (1/1) ... [2022-01-11 02:42:05,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:42:05 BasicIcfg [2022-01-11 02:42:05,923 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:42:05,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:42:05,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:42:05,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:42:05,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:42:05" (1/4) ... [2022-01-11 02:42:05,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc83847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:42:05, skipping insertion in model container [2022-01-11 02:42:05,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:42:05" (2/4) ... [2022-01-11 02:42:05,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc83847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:42:05, skipping insertion in model container [2022-01-11 02:42:05,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:42:05" (3/4) ... [2022-01-11 02:42:05,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc83847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:42:05, skipping insertion in model container [2022-01-11 02:42:05,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:42:05" (4/4) ... [2022-01-11 02:42:05,929 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound2.cTransformedIcfg [2022-01-11 02:42:05,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:42:05,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 02:42:05,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:42:05,975 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:42:05,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 02:42:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:42:05,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:05,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:05,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 283724844, now seen corresponding path program 1 times [2022-01-11 02:42:06,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:06,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747377781] [2022-01-11 02:42:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:06,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:06,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:06,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747377781] [2022-01-11 02:42:06,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747377781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:42:06,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:42:06,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:42:06,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079862674] [2022-01-11 02:42:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:06,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:42:06,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:42:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:42:06,233 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:06,246 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-01-11 02:42:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:42:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:42:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:06,252 INFO L225 Difference]: With dead ends: 41 [2022-01-11 02:42:06,252 INFO L226 Difference]: Without dead ends: 18 [2022-01-11 02:42:06,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:42:06,258 INFO L933 BasicCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:06,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:42:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-11 02:42:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-11 02:42:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 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) [2022-01-11 02:42:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-11 02:42:06,283 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2022-01-11 02:42:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:06,284 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-11 02:42:06,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-11 02:42:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:42:06,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:06,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:06,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:42:06,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2055196108, now seen corresponding path program 1 times [2022-01-11 02:42:06,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:06,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824288526] [2022-01-11 02:42:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:06,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:06,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:06,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991419785] [2022-01-11 02:42:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:06,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:06,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:06,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:42:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:06,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-11 02:42:06,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:06,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:42:06,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824288526] [2022-01-11 02:42:06,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:06,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991419785] [2022-01-11 02:42:06,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991419785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:42:06,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:42:06,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:42:06,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194703654] [2022-01-11 02:42:06,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:06,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:42:06,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:06,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:42:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:42:06,867 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:07,122 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-11 02:42:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:42:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:42:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:07,125 INFO L225 Difference]: With dead ends: 31 [2022-01-11 02:42:07,125 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 02:42:07,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:42:07,130 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:07,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 33 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:42:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 02:42:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2022-01-11 02:42:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-01-11 02:42:07,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2022-01-11 02:42:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:07,150 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-01-11 02:42:07,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-01-11 02:42:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:42:07,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:07,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:07,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:07,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:07,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -713464821, now seen corresponding path program 1 times [2022-01-11 02:42:07,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606671734] [2022-01-11 02:42:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:07,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:07,377 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:07,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731208649] [2022-01-11 02:42:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:07,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:07,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:07,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:42:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:07,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-11 02:42:07,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:07,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:42:07,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606671734] [2022-01-11 02:42:07,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731208649] [2022-01-11 02:42:07,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731208649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:42:07,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:42:07,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:42:07,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110224342] [2022-01-11 02:42:07,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:07,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:42:07,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:07,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:42:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:42:07,518 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:07,532 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-01-11 02:42:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:42:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:42:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:07,533 INFO L225 Difference]: With dead ends: 25 [2022-01-11 02:42:07,533 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 02:42:07,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:42:07,535 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:07,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:42:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 02:42:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-11 02:42:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-01-11 02:42:07,540 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2022-01-11 02:42:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:07,540 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-01-11 02:42:07,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-01-11 02:42:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:42:07,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:07,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:07,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:07,759 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,SelfDestructingSolverStorable2 [2022-01-11 02:42:07,759 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2030540867, now seen corresponding path program 1 times [2022-01-11 02:42:07,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806877531] [2022-01-11 02:42:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:07,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:07,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:07,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291676060] [2022-01-11 02:42:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:07,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:07,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:07,795 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) [2022-01-11 02:42:07,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:42:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:07,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 02:42:07,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:08,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:42:08,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806877531] [2022-01-11 02:42:08,278 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291676060] [2022-01-11 02:42:08,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291676060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:42:08,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:42:08,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:42:08,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64409142] [2022-01-11 02:42:08,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:08,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:42:08,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:42:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:42:08,283 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:08,435 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-01-11 02:42:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:42:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-11 02:42:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:08,436 INFO L225 Difference]: With dead ends: 28 [2022-01-11 02:42:08,436 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 02:42:08,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:42:08,437 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:08,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 68 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:42:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 02:42:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-11 02:42:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-11 02:42:08,441 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-01-11 02:42:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:08,441 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-11 02:42:08,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-11 02:42:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:42:08,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:08,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:08,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:08,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:08,651 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1478828471, now seen corresponding path program 1 times [2022-01-11 02:42:08,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105545049] [2022-01-11 02:42:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:08,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:08,668 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:08,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594206091] [2022-01-11 02:42:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:08,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:08,670 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) [2022-01-11 02:42:08,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:42:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:08,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-11 02:42:08,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:09,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:42:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:14,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:14,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105545049] [2022-01-11 02:42:14,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594206091] [2022-01-11 02:42:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594206091] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:42:14,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:42:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-01-11 02:42:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526619274] [2022-01-11 02:42:14,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:42:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 02:42:14,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 02:42:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2022-01-11 02:42:14,454 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:15,122 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-01-11 02:42:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 02:42:15,124 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 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 16 [2022-01-11 02:42:15,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:15,125 INFO L225 Difference]: With dead ends: 66 [2022-01-11 02:42:15,125 INFO L226 Difference]: Without dead ends: 54 [2022-01-11 02:42:15,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2022-01-11 02:42:15,126 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:15,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 116 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 115 Invalid, 0 Unknown, 40 Unchecked, 0.3s Time] [2022-01-11 02:42:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-11 02:42:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2022-01-11 02:42:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-01-11 02:42:15,132 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 16 [2022-01-11 02:42:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:15,132 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-01-11 02:42:15,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-01-11 02:42:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:42:15,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:15,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:15,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:15,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:15,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1479751992, now seen corresponding path program 1 times [2022-01-11 02:42:15,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:15,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358893402] [2022-01-11 02:42:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:15,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:15,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:15,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257060638] [2022-01-11 02:42:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:15,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:15,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:15,376 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) [2022-01-11 02:42:15,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:42:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:15,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 02:42:15,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:15,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:42:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:15,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:15,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358893402] [2022-01-11 02:42:15,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257060638] [2022-01-11 02:42:15,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257060638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:42:15,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:42:15,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2022-01-11 02:42:15,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734186606] [2022-01-11 02:42:15,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:42:15,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:42:15,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:42:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:42:15,934 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:18,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:42:20,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:42:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:20,545 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-01-11 02:42:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:42:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 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 16 [2022-01-11 02:42:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:20,546 INFO L225 Difference]: With dead ends: 58 [2022-01-11 02:42:20,546 INFO L226 Difference]: Without dead ends: 56 [2022-01-11 02:42:20,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:42:20,547 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:20,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 41 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-11 02:42:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-11 02:42:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2022-01-11 02:42:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 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) [2022-01-11 02:42:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-01-11 02:42:20,554 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 16 [2022-01-11 02:42:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:20,554 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-01-11 02:42:20,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-01-11 02:42:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 02:42:20,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:20,555 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:20,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:20,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:20,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1400992384, now seen corresponding path program 1 times [2022-01-11 02:42:20,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:20,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448689519] [2022-01-11 02:42:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:20,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:20,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:20,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5878733] [2022-01-11 02:42:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:20,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:20,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:20,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:42:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-11 02:42:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:21,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:42:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:21,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448689519] [2022-01-11 02:42:21,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5878733] [2022-01-11 02:42:21,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5878733] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:42:21,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:42:21,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-11 02:42:21,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883168149] [2022-01-11 02:42:21,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:42:21,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-11 02:42:21,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-11 02:42:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-11 02:42:21,396 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:22,049 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-01-11 02:42:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 02:42:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-11 02:42:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:22,051 INFO L225 Difference]: With dead ends: 66 [2022-01-11 02:42:22,051 INFO L226 Difference]: Without dead ends: 62 [2022-01-11 02:42:22,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-01-11 02:42:22,052 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:22,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 136 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 02:42:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-11 02:42:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2022-01-11 02:42:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 52 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2022-01-11 02:42:22,066 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 17 [2022-01-11 02:42:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:22,066 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2022-01-11 02:42:22,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2022-01-11 02:42:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:42:22,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:22,067 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:22,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:22,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:22,282 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1699021138, now seen corresponding path program 1 times [2022-01-11 02:42:22,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:22,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918593706] [2022-01-11 02:42:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:22,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:22,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:22,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731774803] [2022-01-11 02:42:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:22,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:22,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:22,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:42:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:22,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:42:22,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:23,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:42:23,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:23,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918593706] [2022-01-11 02:42:23,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:23,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731774803] [2022-01-11 02:42:23,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731774803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:42:23,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:42:23,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:42:23,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733286934] [2022-01-11 02:42:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:23,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:42:23,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:42:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:42:23,082 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-01-11 02:42:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:24,047 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2022-01-11 02:42:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:42:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2022-01-11 02:42:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:24,049 INFO L225 Difference]: With dead ends: 73 [2022-01-11 02:42:24,049 INFO L226 Difference]: Without dead ends: 67 [2022-01-11 02:42:24,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:42:24,051 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:24,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 62 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 02:42:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-11 02:42:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2022-01-11 02:42:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 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) [2022-01-11 02:42:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-01-11 02:42:24,070 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 20 [2022-01-11 02:42:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:24,070 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-01-11 02:42:24,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-01-11 02:42:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-01-11 02:42:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:42:24,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:24,071 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:24,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:24,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:24,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash 788491695, now seen corresponding path program 1 times [2022-01-11 02:42:24,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962349692] [2022-01-11 02:42:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:24,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:24,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904676295] [2022-01-11 02:42:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:24,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:24,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:24,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 02:42:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:42:24,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 02:42:24,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:42:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:27,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:42:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:42:28,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:42:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962349692] [2022-01-11 02:42:28,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:42:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904676295] [2022-01-11 02:42:28,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904676295] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 02:42:28,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:42:28,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2022-01-11 02:42:28,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437259946] [2022-01-11 02:42:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:42:28,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:42:28,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:42:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:42:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-11 02:42:28,197 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-01-11 02:42:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:42:28,417 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-01-11 02:42:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:42:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2022-01-11 02:42:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:42:28,418 INFO L225 Difference]: With dead ends: 57 [2022-01-11 02:42:28,418 INFO L226 Difference]: Without dead ends: 53 [2022-01-11 02:42:28,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-01-11 02:42:28,419 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:42:28,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:42:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-11 02:42:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-01-11 02:42:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.196078431372549) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:42:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2022-01-11 02:42:28,431 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 20 [2022-01-11 02:42:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:42:28,431 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2022-01-11 02:42:28,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-01-11 02:42:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2022-01-11 02:42:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 02:42:28,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:42:28,432 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:28,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:28,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-11 02:42:28,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:42:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:42:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2021264181, now seen corresponding path program 2 times [2022-01-11 02:42:28,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:42:28,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633252335] [2022-01-11 02:42:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:42:28,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:42:28,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:42:28,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299400566] [2022-01-11 02:42:28,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:42:28,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:42:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:42:28,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:42:28,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 02:42:28,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:42:28,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-01-11 02:42:28,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 02:42:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 02:42:28,842 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 02:42:28,842 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 02:42:28,843 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 02:42:28,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 02:42:28,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-11 02:42:29,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-11 02:42:29,048 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:42:29,051 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 02:42:29,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:42:29 BasicIcfg [2022-01-11 02:42:29,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 02:42:29,087 INFO L158 Benchmark]: Toolchain (without parser) took 23793.28ms. Allocated memory was 189.8MB in the beginning and 286.3MB in the end (delta: 96.5MB). Free memory was 134.4MB in the beginning and 197.4MB in the end (delta: -63.1MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,087 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 02:42:29,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.16ms. Allocated memory was 189.8MB in the beginning and 238.0MB in the end (delta: 48.2MB). Free memory was 134.2MB in the beginning and 209.9MB in the end (delta: -75.8MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.54ms. Allocated memory is still 238.0MB. Free memory was 209.9MB in the beginning and 208.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,088 INFO L158 Benchmark]: Boogie Preprocessor took 37.31ms. Allocated memory is still 238.0MB. Free memory was 208.7MB in the beginning and 207.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,088 INFO L158 Benchmark]: RCFGBuilder took 258.52ms. Allocated memory is still 238.0MB. Free memory was 207.3MB in the beginning and 196.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,088 INFO L158 Benchmark]: IcfgTransformer took 57.57ms. Allocated memory is still 238.0MB. Free memory was 196.9MB in the beginning and 193.7MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,088 INFO L158 Benchmark]: TraceAbstraction took 23161.98ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 193.1MB in the beginning and 197.4MB in the end (delta: -4.3MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2022-01-11 02:42:29,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.16ms. Allocated memory was 189.8MB in the beginning and 238.0MB in the end (delta: 48.2MB). Free memory was 134.2MB in the beginning and 209.9MB in the end (delta: -75.8MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.54ms. Allocated memory is still 238.0MB. Free memory was 209.9MB in the beginning and 208.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.31ms. Allocated memory is still 238.0MB. Free memory was 208.7MB in the beginning and 207.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 258.52ms. Allocated memory is still 238.0MB. Free memory was 207.3MB in the beginning and 196.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 57.57ms. Allocated memory is still 238.0MB. Free memory was 196.9MB in the beginning and 193.7MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 23161.98ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 193.1MB in the beginning and 197.4MB in the end (delta: -4.3MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) [L30] CALL assume_abort_if_not(x2 != 0) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=-1, x2=-1, y1=0, y2=0, y3=-1] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=-1, x2=-1, y1=0, y2=0, y3=-1] [L36] COND TRUE counter++<2 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=-1, x2=-1, y1=0, y2=0, y3=-1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=-1, x2=-1, y1=-1, y2=0, y3=-2] [L36] EXPR counter++ VAL [counter=2, counter++=-1, x1=-1, x2=-1, y1=-1, y2=0, y3=-2] [L36] COND TRUE counter++<2 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=-1, x2=-1, y1=-1, y2=0, y3=-2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=-1, x2=-1, y1=-2, y2=0, y3=-3] [L36] EXPR counter++ VAL [counter=3, counter++=-2, x1=-1, x2=-1, y1=-2, y2=0, y3=-3] [L36] COND FALSE !(counter++<2) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 23.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 328 mSDsluCounter, 561 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 40 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 149 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=7, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 64 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 190 ConstructedInterpolants, 4 QuantifiedInterpolants, 2703 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1290 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 16/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-11 02:42:29,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...