/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/lcm2_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:40:53,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:40:53,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:40:53,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:40:53,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:40:53,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:40:53,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:40:53,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:40:53,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:40:53,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:40:53,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:40:53,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:40:53,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:40:53,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:40:53,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:40:53,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:40:53,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:40:53,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:40:53,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:40:53,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:40:53,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:40:53,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:40:53,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:40:53,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:40:53,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:40:53,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:40:53,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:40:53,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:40:53,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:40:53,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:40:53,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:40:53,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:40:53,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:40:53,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:40:53,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:40:53,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:40:53,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:40:53,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:40:53,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:40:53,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:40:53,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:40:53,149 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 02:40:53,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:40:53,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:40:53,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:40:53,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:40:53,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:40:53,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:40:53,174 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:40:53,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:40:53,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:40:53,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:40:53,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:40:53,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:40:53,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:40:53,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:40:53,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:40:53,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:40:53,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:40:53,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:40:53,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:40:53,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:40:53,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:40:53,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:40:53,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:40:53,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:40:53,444 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:40:53,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound1.c [2022-01-11 02:40:53,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1aa4585c/7cc2644a1c7d4a86a7d92c794266c0ac/FLAGde681a716 [2022-01-11 02:40:53,905 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:40:53,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound1.c [2022-01-11 02:40:53,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1aa4585c/7cc2644a1c7d4a86a7d92c794266c0ac/FLAGde681a716 [2022-01-11 02:40:53,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1aa4585c/7cc2644a1c7d4a86a7d92c794266c0ac [2022-01-11 02:40:53,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:40:53,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:40:53,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:40:53,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:40:53,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:40:53,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:40:53" (1/1) ... [2022-01-11 02:40:53,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54885ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:53, skipping insertion in model container [2022-01-11 02:40:53,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:40:53" (1/1) ... [2022-01-11 02:40:53,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:40:53,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:40:54,166 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/lcm2_unwindbound1.c[537,550] [2022-01-11 02:40:54,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:40:54,198 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:40:54,213 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/lcm2_unwindbound1.c[537,550] [2022-01-11 02:40:54,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:40:54,241 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:40:54,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54 WrapperNode [2022-01-11 02:40:54,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:40:54,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:40:54,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:40:54,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:40:54,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,280 INFO L137 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2022-01-11 02:40:54,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:40:54,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:40:54,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:40:54,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:40:54,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:40:54,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:40:54,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:40:54,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:40:54,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:40:54,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:40:54,347 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 02:40:54,371 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 02:40:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:40:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:40:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:40:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:40:54,448 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:40:54,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:40:54,746 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:40:54,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:40:54,750 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 02:40:54,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:54 BoogieIcfgContainer [2022-01-11 02:40:54,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:40:54,752 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:40:54,752 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:40:54,754 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:40:54,756 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:54" (1/1) ... [2022-01-11 02:40:54,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:40:54 BasicIcfg [2022-01-11 02:40:54,824 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:40:54,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:40:54,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:40:54,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:40:54,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:40:53" (1/4) ... [2022-01-11 02:40:54,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d938642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:40:54, skipping insertion in model container [2022-01-11 02:40:54,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:54" (2/4) ... [2022-01-11 02:40:54,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d938642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:40:54, skipping insertion in model container [2022-01-11 02:40:54,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:54" (3/4) ... [2022-01-11 02:40:54,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d938642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:40:54, skipping insertion in model container [2022-01-11 02:40:54,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:40:54" (4/4) ... [2022-01-11 02:40:54,830 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound1.cTransformedIcfg [2022-01-11 02:40:54,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:40:54,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 02:40:54,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:40:54,871 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 02:40:54,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 02:40:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 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 02:40:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:40:54,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:40:54,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:40:54,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:40:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:40:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1154370638, now seen corresponding path program 1 times [2022-01-11 02:40:54,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:40:54,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827090376] [2022-01-11 02:40:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:54,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:40:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:40:55,047 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 02:40:55,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:40:55,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827090376] [2022-01-11 02:40:55,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827090376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:40:55,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:40:55,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:40:55,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008016349] [2022-01-11 02:40:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:40:55,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:40:55,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:40:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:40:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:40:55,082 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 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 7.0) internal successors, (14), 2 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 02:40:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:40:55,096 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2022-01-11 02:40:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:40:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 02:40:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:40:55,104 INFO L225 Difference]: With dead ends: 49 [2022-01-11 02:40:55,104 INFO L226 Difference]: Without dead ends: 22 [2022-01-11 02:40:55,107 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 02:40:55,111 INFO L933 BasicCegarLoop]: 28 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, 28 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 02:40:55,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:40:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-11 02:40:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-11 02:40:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 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 02:40:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-11 02:40:55,141 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2022-01-11 02:40:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:40:55,142 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-11 02:40:55,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 02:40:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-11 02:40:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:40:55,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:40:55,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:40:55,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:40:55,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:40:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:40:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 549638062, now seen corresponding path program 1 times [2022-01-11 02:40:55,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:40:55,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532597597] [2022-01-11 02:40:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:55,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:40:55,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:40:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617223510] [2022-01-11 02:40:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:55,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:40:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:40:55,208 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 02:40:55,210 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 02:40:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:40:55,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:40:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:40:55,542 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 02:40:55,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:40:55,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:40:55,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532597597] [2022-01-11 02:40:55,543 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:40:55,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617223510] [2022-01-11 02:40:55,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617223510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:40:55,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:40:55,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:40:55,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336396382] [2022-01-11 02:40:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:40:55,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:40:55,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:40:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:40:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:40:55,551 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 02:40:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:40:55,655 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-11 02:40:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:40:55,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 02:40:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:40:55,658 INFO L225 Difference]: With dead ends: 35 [2022-01-11 02:40:55,658 INFO L226 Difference]: Without dead ends: 28 [2022-01-11 02:40:55,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:40:55,659 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:40:55,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:40:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-11 02:40:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-01-11 02:40:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 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 02:40:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-11 02:40:55,664 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2022-01-11 02:40:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:40:55,664 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-11 02:40:55,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 02:40:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-11 02:40:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:40:55,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:40:55,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:40:55,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 02:40:55,866 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 02:40:55,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:40:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:40:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1125656167, now seen corresponding path program 1 times [2022-01-11 02:40:55,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:40:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532763585] [2022-01-11 02:40:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:55,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:40:55,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:40:55,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050369758] [2022-01-11 02:40:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:55,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:40:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:40:55,903 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 02:40:55,905 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 02:40:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:40:56,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:40:56,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:40:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:40:56,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:40:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:40:56,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:40:56,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532763585] [2022-01-11 02:40:56,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:40:56,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050369758] [2022-01-11 02:40:56,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050369758] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:40:56,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:40:56,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-11 02:40:56,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421808543] [2022-01-11 02:40:56,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:40:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:40:56,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:40:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:40:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:40:56,562 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 02:40:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:40:56,674 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-01-11 02:40:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:40:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 02:40:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:40:56,674 INFO L225 Difference]: With dead ends: 34 [2022-01-11 02:40:56,675 INFO L226 Difference]: Without dead ends: 22 [2022-01-11 02:40:56,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:40:56,676 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:40:56,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:40:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-11 02:40:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-11 02:40:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:40:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-01-11 02:40:56,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2022-01-11 02:40:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:40:56,680 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-01-11 02:40:56,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 02:40:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-01-11 02:40:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:40:56,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:40:56,681 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:40:56,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 02:40:56,882 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 02:40:56,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:40:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:40:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -535637518, now seen corresponding path program 1 times [2022-01-11 02:40:56,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:40:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819514791] [2022-01-11 02:40:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:56,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:40:56,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:40:56,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011621768] [2022-01-11 02:40:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:40:56,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:40:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:40:56,921 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 02:40:56,923 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 02:40:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:40:58,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-11 02:40:58,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:40:59,061 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 02:40:59,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:41:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:41:00,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:41:00,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819514791] [2022-01-11 02:41:00,752 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:41:00,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011621768] [2022-01-11 02:41:00,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011621768] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 02:41:00,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:41:00,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-01-11 02:41:00,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579351408] [2022-01-11 02:41:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:41:00,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:41:00,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:41:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:41:00,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:41:00,754 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 02:41:03,058 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 02:41:05,080 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 02:41:05,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:41:05,096 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2022-01-11 02:41:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:41:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-11 02:41:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:41:05,097 INFO L225 Difference]: With dead ends: 28 [2022-01-11 02:41:05,097 INFO L226 Difference]: Without dead ends: 22 [2022-01-11 02:41:05,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:41:05,098 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 02:41:05,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 02:41:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-11 02:41:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-11 02:41:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 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 02:41:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2022-01-11 02:41:05,102 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 21 [2022-01-11 02:41:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:41:05,102 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2022-01-11 02:41:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 02:41:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2022-01-11 02:41:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:41:05,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:41:05,103 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:41:05,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 02:41:05,303 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 02:41:05,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:41:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:41:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -507008367, now seen corresponding path program 1 times [2022-01-11 02:41:05,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:41:05,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873242171] [2022-01-11 02:41:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:41:05,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:41:05,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:41:05,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513284209] [2022-01-11 02:41:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:41:05,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:41:05,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:41:05,323 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 02:41:05,333 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 02:41:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:41:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-11 02:41:07,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:41:08,240 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 02:41:08,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:41:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:41:12,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:41:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873242171] [2022-01-11 02:41:12,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:41:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513284209] [2022-01-11 02:41:12,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513284209] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 02:41:12,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:41:12,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2022-01-11 02:41:12,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259657238] [2022-01-11 02:41:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:41:12,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:41:12,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:41:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:41:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:41:12,348 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 02:41:14,441 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 02:41:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:41:14,450 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-01-11 02:41:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:41:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-11 02:41:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:41:14,451 INFO L225 Difference]: With dead ends: 22 [2022-01-11 02:41:14,451 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 02:41:14,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-01-11 02:41:14,452 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:41:14,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-01-11 02:41:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 02:41:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 02:41:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 02:41:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 02:41:14,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-01-11 02:41:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:41:14,454 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 02:41:14,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 02:41:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 02:41:14,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 02:41:14,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 02:41:14,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 02:41:14,467 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 02:41:14,664 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 02:41:14,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 02:41:15,461 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2022-01-11 02:41:15,462 INFO L858 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L9-6(line 9) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L854 garLoopResultBuilder]: At program point L42-2(lines 36 49) the Hoare annotation is: (let ((.cse0 (<= 0 ~counter~0Int))) (or (and .cse0 (< ~counter~0Int 4294967296) (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|) (<= (div (+ (- 1) ~counter~0Int) (- 4294967296)) (div (+ (* (- 1) ~counter~0Int) 1) 4294967296)) (= (mod (+ (mod (* |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 4294967296) (mod (* |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int|) 4294967296)) 4294967296) (mod (* (mod (* 2 |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (and .cse0 (= |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) (<= ~counter~0Int 0) (= |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|)))) [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L36-3(lines 36 49) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 36 49) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2022-01-11 02:41:15,463 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-01-11 02:41:15,464 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2022-01-11 02:41:15,464 INFO L861 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2022-01-11 02:41:15,464 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-01-11 02:41:15,464 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 0 ~counter~0Int) (= |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) (< ~counter~0Int 4294967296) (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|) (<= (div (+ (- 1) ~counter~0Int) (- 4294967296)) (div (+ (* (- 1) ~counter~0Int) 1) 4294967296)) (= |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|)) [2022-01-11 02:41:15,464 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-11 02:41:15,464 INFO L861 garLoopResultBuilder]: At program point L55(lines 20 56) the Hoare annotation is: true [2022-01-11 02:41:15,464 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-11 02:41:15,465 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2022-01-11 02:41:15,465 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-11 02:41:15,465 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 48) no Hoare annotation was computed. [2022-01-11 02:41:15,465 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-11 02:41:15,470 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-11 02:41:15,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 02:41:15,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:41:15 BasicIcfg [2022-01-11 02:41:15,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 02:41:15,512 INFO L158 Benchmark]: Toolchain (without parser) took 21575.21ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 120.7MB in the beginning and 104.4MB in the end (delta: 16.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,512 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 02:41:15,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 147.5MB in the end (delta: -27.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.49ms. Allocated memory is still 172.0MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,513 INFO L158 Benchmark]: Boogie Preprocessor took 31.97ms. Allocated memory is still 172.0MB. Free memory was 145.9MB in the beginning and 144.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,513 INFO L158 Benchmark]: RCFGBuilder took 437.92ms. Allocated memory is still 172.0MB. Free memory was 144.3MB in the beginning and 133.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,513 INFO L158 Benchmark]: IcfgTransformer took 72.09ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 128.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,514 INFO L158 Benchmark]: TraceAbstraction took 20685.44ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 128.1MB in the beginning and 104.4MB in the end (delta: 23.7MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2022-01-11 02:41:15,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 147.5MB in the end (delta: -27.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.49ms. Allocated memory is still 172.0MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.97ms. Allocated memory is still 172.0MB. Free memory was 145.9MB in the beginning and 144.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 437.92ms. Allocated memory is still 172.0MB. Free memory was 144.3MB in the beginning and 133.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 72.09ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 128.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 20685.44ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 128.1MB in the beginning and 104.4MB in the end (delta: 23.7MB). Peak memory consumption was 68.8MB. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 20.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 97 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 103 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1768 SizeOfPredicates, 32 NumberOfNonLiveVariables, 845 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/14 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((~bvule32(1bv32, cond) && ~bvsle33((if !(0bv33 == ~bvurem33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) then (if ~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter))[32:32] == 1bv1 then ~bvadd16(~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33), 1bv33) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)), ~bvadd16(~sign_extendFrom8To32(~bvmul32(18446744073709551615bv64, ~zero_extendFrom32To64(counter))), 1bv65)[64:32])) && x == a) && v == a) && u == b) && ~bvule32(0bv32, counter)) && y == b) && ~bvult64(~zero_extendFrom32To33(counter), 4294967296bv33) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((x == a && v == a) && u == b) && ~bvule32(0bv32, counter)) && ~bvule32(counter, 0bv32)) && y == b) || ((((~bvule32(1bv32, cond) && ~bvsle33((if !(0bv33 == ~bvurem33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) then (if ~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter))[32:32] == 1bv1 then ~bvadd16(~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33), 1bv33) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)), ~bvadd16(~sign_extendFrom8To32(~bvmul32(18446744073709551615bv64, ~zero_extendFrom32To64(counter))), 1bv65)[64:32])) && ~bvule32(0bv32, counter)) && ~bvadd16(~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(x), ~zero_extendFrom32To64(u))[31:0]), ~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(v), ~zero_extendFrom32To64(y))[31:0]))[31:0] == ~bvmul32(~zero_extendFrom32To64(~bvmul32(2bv33, ~zero_extendFrom32To33(a))[31:0]), ~zero_extendFrom32To64(b))[31:0]) && ~bvult64(~zero_extendFrom32To33(counter), 4294967296bv33)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-11 02:41:15,558 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...