/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 12:50:39,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 12:50:39,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 12:50:39,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 12:50:39,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 12:50:39,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 12:50:39,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 12:50:39,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 12:50:39,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 12:50:39,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 12:50:39,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 12:50:39,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 12:50:39,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 12:50:39,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 12:50:39,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 12:50:39,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 12:50:39,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 12:50:39,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 12:50:39,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 12:50:39,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 12:50:39,195 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 12:50:39,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 12:50:39,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 12:50:39,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 12:50:39,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 12:50:39,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 12:50:39,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 12:50:39,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 12:50:39,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 12:50:39,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 12:50:39,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 12:50:39,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 12:50:39,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 12:50:39,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 12:50:39,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 12:50:39,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 12:50:39,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 12:50:39,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 12:50:39,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 12:50:39,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 12:50:39,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 12:50:39,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 12:50:39,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 12:50:39,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 12:50:39,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 12:50:39,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 12:50:39,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 12:50:39,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 12:50:39,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 12:50:39,228 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 12:50:39,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 12:50:39,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 12:50:39,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 12:50:39,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:50:39,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 12:50:39,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 12:50:39,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 12:50:39,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 12:50:39,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 12:50:39,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 12:50:39,232 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 12:50:39,233 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 12:50:39,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 12:50:39,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 12:50:39,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 12:50:39,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 12:50:39,450 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 12:50:39,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2022-04-06 12:50:39,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cafef5/a0995a77cd004d569427d032cdba5fa9/FLAGf372136b9 [2022-04-06 12:50:39,816 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 12:50:39,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2022-04-06 12:50:39,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cafef5/a0995a77cd004d569427d032cdba5fa9/FLAGf372136b9 [2022-04-06 12:50:40,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cafef5/a0995a77cd004d569427d032cdba5fa9 [2022-04-06 12:50:40,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 12:50:40,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 12:50:40,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 12:50:40,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 12:50:40,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 12:50:40,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc1ccb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40, skipping insertion in model container [2022-04-06 12:50:40,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 12:50:40,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 12:50:40,376 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_valuebound1.c[537,550] [2022-04-06 12:50:40,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:50:40,397 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 12:50:40,404 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_valuebound1.c[537,550] [2022-04-06 12:50:40,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:50:40,415 INFO L208 MainTranslator]: Completed translation [2022-04-06 12:50:40,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40 WrapperNode [2022-04-06 12:50:40,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 12:50:40,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 12:50:40,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 12:50:40,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 12:50:40,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 12:50:40,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 12:50:40,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 12:50:40,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 12:50:40,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:50:40,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:50:40,457 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) [2022-04-06 12:50:40,458 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 [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 12:50:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 12:50:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 12:50:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 12:50:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 12:50:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 12:50:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 12:50:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 12:50:40,529 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 12:50:40,530 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 12:50:40,629 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 12:50:40,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 12:50:40,634 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 12:50:40,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:50:40 BoogieIcfgContainer [2022-04-06 12:50:40,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 12:50:40,635 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 12:50:40,635 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 12:50:40,636 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 12:50:40,638 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:50:40" (1/1) ... [2022-04-06 12:50:40,639 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 12:50:40,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:50:40 BasicIcfg [2022-04-06 12:50:40,671 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 12:50:40,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 12:50:40,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 12:50:40,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 12:50:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 12:50:40" (1/4) ... [2022-04-06 12:50:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632d74aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:50:40, skipping insertion in model container [2022-04-06 12:50:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:50:40" (2/4) ... [2022-04-06 12:50:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632d74aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:50:40, skipping insertion in model container [2022-04-06 12:50:40,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:50:40" (3/4) ... [2022-04-06 12:50:40,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632d74aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:50:40, skipping insertion in model container [2022-04-06 12:50:40,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:50:40" (4/4) ... [2022-04-06 12:50:40,675 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.cqvasr [2022-04-06 12:50:40,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 12:50:40,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 12:50:40,705 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 12:50:40,709 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-06 12:50:40,709 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 12:50:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 12:50:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 12:50:40,722 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:50:40,723 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:50:40,723 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:50:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:50:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash -419271626, now seen corresponding path program 1 times [2022-04-06 12:50:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:50:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069802625] [2022-04-06 12:50:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:50:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 12:50:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 12:50:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 12:50:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 12:50:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 12:50:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 12:50:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 12:50:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 12:50:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:50:40,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069802625] [2022-04-06 12:50:40,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069802625] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:50:40,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:50:40,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 12:50:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668795669] [2022-04-06 12:50:40,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:50:40,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 12:50:40,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:50:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 12:50:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:50:40,908 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 12:50:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:50:40,961 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2022-04-06 12:50:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 12:50:40,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-06 12:50:40,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:50:40,967 INFO L225 Difference]: With dead ends: 61 [2022-04-06 12:50:40,967 INFO L226 Difference]: Without dead ends: 29 [2022-04-06 12:50:40,969 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:50:40,972 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:50:40,972 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:50:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-06 12:50:41,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-06 12:50:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 12:50:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-04-06 12:50:41,004 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 43 [2022-04-06 12:50:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:50:41,005 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-04-06 12:50:41,006 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 12:50:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-04-06 12:50:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 12:50:41,008 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:50:41,009 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:50:41,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 12:50:41,010 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:50:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:50:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1223303911, now seen corresponding path program 1 times [2022-04-06 12:50:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:50:41,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269856764] [2022-04-06 12:50:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:50:41,040 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:50:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691253981] [2022-04-06 12:50:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:50:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:50:41,051 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) [2022-04-06 12:50:41,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 12:50:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:41,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 12:50:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:50:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 12:50:41,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:50:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:50:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269856764] [2022-04-06 12:50:41,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:50:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691253981] [2022-04-06 12:50:41,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691253981] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:50:41,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:50:41,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 12:50:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900222488] [2022-04-06 12:50:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:50:41,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:50:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:50:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:50:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:50:41,463 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 12:50:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:50:41,541 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-04-06 12:50:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:50:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-04-06 12:50:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:50:41,545 INFO L225 Difference]: With dead ends: 40 [2022-04-06 12:50:41,545 INFO L226 Difference]: Without dead ends: 37 [2022-04-06 12:50:41,546 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:50:41,546 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:50:41,547 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:50:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-06 12:50:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-04-06 12:50:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 12:50:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-04-06 12:50:41,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 43 [2022-04-06 12:50:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:50:41,565 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-04-06 12:50:41,565 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 12:50:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-06 12:50:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 12:50:41,568 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:50:41,568 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:50:41,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 12:50:41,768 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:50:41,769 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:50:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:50:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1282076869, now seen corresponding path program 1 times [2022-04-06 12:50:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:50:41,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312000882] [2022-04-06 12:50:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:50:41,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:50:41,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135370791] [2022-04-06 12:50:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:41,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:50:41,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:50:41,795 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) [2022-04-06 12:50:41,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 12:50:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:41,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 12:50:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:50:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 12:50:42,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:50:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 12:50:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:50:42,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312000882] [2022-04-06 12:50:42,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:50:42,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135370791] [2022-04-06 12:50:42,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135370791] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 12:50:42,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 12:50:42,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-06 12:50:42,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592227192] [2022-04-06 12:50:42,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 12:50:42,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 12:50:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:50:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 12:50:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 12:50:42,335 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-04-06 12:50:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:50:42,443 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-04-06 12:50:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 12:50:42,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2022-04-06 12:50:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:50:42,444 INFO L225 Difference]: With dead ends: 50 [2022-04-06 12:50:42,444 INFO L226 Difference]: Without dead ends: 39 [2022-04-06 12:50:42,445 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 12:50:42,445 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:50:42,446 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 118 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:50:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-06 12:50:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-04-06 12:50:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 12:50:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-04-06 12:50:42,451 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 51 [2022-04-06 12:50:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:50:42,451 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-04-06 12:50:42,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-04-06 12:50:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-06 12:50:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 12:50:42,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:50:42,452 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:50:42,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 12:50:42,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 12:50:42,678 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:50:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:50:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1310706020, now seen corresponding path program 1 times [2022-04-06 12:50:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:50:42,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892553064] [2022-04-06 12:50:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:50:42,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:50:42,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430830543] [2022-04-06 12:50:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:50:42,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:50:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:50:42,697 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) [2022-04-06 12:50:42,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 12:50:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:50:42,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-06 12:50:42,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:50:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 12:50:42,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:50:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 12:50:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:50:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892553064] [2022-04-06 12:50:43,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:50:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430830543] [2022-04-06 12:50:43,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430830543] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 12:50:43,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 12:50:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-06 12:50:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218037031] [2022-04-06 12:50:43,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 12:50:43,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 12:50:43,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:50:43,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 12:50:43,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 12:50:43,406 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 12:50:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:50:43,519 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-04-06 12:50:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 12:50:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 51 [2022-04-06 12:50:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:50:43,524 INFO L225 Difference]: With dead ends: 39 [2022-04-06 12:50:43,524 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 12:50:43,525 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-06 12:50:43,526 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:50:43,527 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 122 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:50:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 12:50:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 12:50:43,529 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) [2022-04-06 12:50:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 12:50:43,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2022-04-06 12:50:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:50:43,529 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 12:50:43,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 12:50:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 12:50:43,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 12:50:43,531 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 12:50:43,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 12:50:43,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:50:43,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 12:50:43,831 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 12:50:43,831 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 12:50:43,832 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-04-06 12:50:43,832 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-04-06 12:50:43,833 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 57) the Hoare annotation is: true [2022-04-06 12:50:43,833 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-04-06 12:50:43,833 INFO L882 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-04-06 12:50:43,833 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= (mod main_~a~0 4294967296) 1) [2022-04-06 12:50:43,833 INFO L878 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= (mod main_~a~0 4294967296) 1) (<= (mod main_~b~0 4294967296) 1)) [2022-04-06 12:50:43,833 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296))) (and (<= .cse0 1) (<= 1 .cse0) (<= (mod main_~b~0 4294967296) 1))) [2022-04-06 12:50:43,833 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296)) (.cse1 (mod main_~b~0 4294967296))) (and (<= .cse0 1) (<= 1 .cse1) (<= 1 .cse0) (<= .cse1 1))) [2022-04-06 12:50:43,834 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296)) (.cse1 (mod main_~b~0 4294967296))) (and (<= .cse0 1) (<= 1 .cse1) (<= 1 .cse0) (<= .cse1 1))) [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L878 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (= main_~a~0 main_~v~0) (<= (mod main_~x~0 4294967296) 1) (<= 1 (mod main_~a~0 4294967296)) (= main_~b~0 main_~y~0) (= main_~b~0 main_~u~0) (<= (mod main_~b~0 4294967296) 1) (= main_~a~0 main_~x~0) (<= 1 (mod main_~y~0 4294967296))) [2022-04-06 12:50:43,834 INFO L878 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (and (= main_~a~0 main_~v~0) (= main_~b~0 main_~y~0) (= main_~b~0 main_~u~0) (= main_~a~0 main_~x~0)) [2022-04-06 12:50:43,834 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= main_~a~0 main_~v~0) (<= (mod main_~x~0 4294967296) 1) (<= 1 (mod main_~a~0 4294967296)) (= main_~b~0 main_~y~0) (= main_~b~0 main_~u~0) (<= (mod main_~b~0 4294967296) 1) (= main_~a~0 main_~x~0) (<= 1 (mod main_~y~0 4294967296))) [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 57) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 57) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-04-06 12:50:43,834 INFO L882 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-04-06 12:50:43,835 INFO L882 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-04-06 12:50:43,835 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-04-06 12:50:43,835 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-04-06 12:50:43,837 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-06 12:50:43,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 12:50:43,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:50:43 BasicIcfg [2022-04-06 12:50:43,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 12:50:43,849 INFO L158 Benchmark]: Toolchain (without parser) took 3594.59ms. Allocated memory was 200.3MB in the beginning and 257.9MB in the end (delta: 57.7MB). Free memory was 149.0MB in the beginning and 142.8MB in the end (delta: 6.2MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,849 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory was 165.1MB in the beginning and 165.0MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 12:50:43,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.83ms. Allocated memory is still 200.3MB. Free memory was 148.8MB in the beginning and 175.6MB in the end (delta: -26.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,849 INFO L158 Benchmark]: Boogie Preprocessor took 17.30ms. Allocated memory is still 200.3MB. Free memory was 175.6MB in the beginning and 174.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,850 INFO L158 Benchmark]: RCFGBuilder took 200.98ms. Allocated memory is still 200.3MB. Free memory was 174.1MB in the beginning and 163.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,850 INFO L158 Benchmark]: IcfgTransformer took 35.39ms. Allocated memory is still 200.3MB. Free memory was 163.6MB in the beginning and 162.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,850 INFO L158 Benchmark]: TraceAbstraction took 3176.62ms. Allocated memory was 200.3MB in the beginning and 257.9MB in the end (delta: 57.7MB). Free memory was 161.5MB in the beginning and 142.8MB in the end (delta: 18.7MB). Peak memory consumption was 76.6MB. Max. memory is 8.0GB. [2022-04-06 12:50:43,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory was 165.1MB in the beginning and 165.0MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.83ms. Allocated memory is still 200.3MB. Free memory was 148.8MB in the beginning and 175.6MB in the end (delta: -26.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.30ms. Allocated memory is still 200.3MB. Free memory was 175.6MB in the beginning and 174.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 200.98ms. Allocated memory is still 200.3MB. Free memory was 174.1MB in the beginning and 163.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 35.39ms. Allocated memory is still 200.3MB. Free memory was 163.6MB in the beginning and 162.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3176.62ms. Allocated memory was 200.3MB in the beginning and 257.9MB in the end (delta: 57.7MB). Free memory was 161.5MB in the beginning and 142.8MB in the end (delta: 18.7MB). Peak memory consumption was 76.6MB. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 381 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 111 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 242 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 32 PreInvPairs, 40 NumberOfFragments, 166 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 753 SizeOfPredicates, 21 NumberOfNonLiveVariables, 419 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 304/376 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 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((a == v && x % 4294967296 <= 1) && 1 <= a % 4294967296) && b == y) && b == u) && b % 4294967296 <= 1) && a == x) && 1 <= y % 4294967296 RESULT: Ultimate proved your program to be correct! [2022-04-06 12:50:43,881 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...