/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/loops-crafted-1/in-de62.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 22:22:36,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 22:22:36,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 22:22:36,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 22:22:36,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 22:22:36,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 22:22:36,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 22:22:36,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 22:22:36,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 22:22:36,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 22:22:36,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 22:22:36,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 22:22:36,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 22:22:36,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 22:22:36,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 22:22:36,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 22:22:36,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 22:22:36,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 22:22:36,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 22:22:36,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 22:22:36,211 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 22:22:36,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 22:22:36,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 22:22:36,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 22:22:36,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 22:22:36,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 22:22:36,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 22:22:36,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 22:22:36,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 22:22:36,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 22:22:36,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 22:22:36,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 22:22:36,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 22:22:36,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 22:22:36,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 22:22:36,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 22:22:36,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 22:22:36,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 22:22:36,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 22:22:36,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 22:22:36,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 22:22:36,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 22:22:36,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 22:22:36,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 22:22:36,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 22:22:36,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 22:22:36,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 22:22:36,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 22:22:36,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 22:22:36,261 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 22:22:36,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 22:22:36,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 22:22:36,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 22:22:36,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 22:22:36,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 22:22:36,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 22:22:36,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:22:36,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 22:22:36,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 22:22:36,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 22:22:36,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 22:22:36,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 22:22:36,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 22:22:36,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 22:22:36,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 22:22:36,265 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 22:22:36,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 22:22:36,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 22:22:36,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 22:22:36,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 22:22:36,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 22:22:36,511 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 22:22:36,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-03-18 22:22:36,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d6d14a2/0634fb23188d4e4ab4728458631f6ec1/FLAGb43b0a93d [2022-03-18 22:22:36,932 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 22:22:36,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-03-18 22:22:36,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d6d14a2/0634fb23188d4e4ab4728458631f6ec1/FLAGb43b0a93d [2022-03-18 22:22:36,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d6d14a2/0634fb23188d4e4ab4728458631f6ec1 [2022-03-18 22:22:36,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 22:22:36,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 22:22:36,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 22:22:36,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 22:22:36,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 22:22:36,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:22:36" (1/1) ... [2022-03-18 22:22:36,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589ac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:36, skipping insertion in model container [2022-03-18 22:22:36,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:22:36" (1/1) ... [2022-03-18 22:22:36,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 22:22:36,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 22:22:37,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de62.c[368,381] [2022-03-18 22:22:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:22:37,133 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 22:22:37,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de62.c[368,381] [2022-03-18 22:22:37,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:22:37,159 INFO L208 MainTranslator]: Completed translation [2022-03-18 22:22:37,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37 WrapperNode [2022-03-18 22:22:37,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 22:22:37,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 22:22:37,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 22:22:37,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 22:22:37,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 22:22:37,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 22:22:37,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 22:22:37,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 22:22:37,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:37,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:22:37,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:22:37,224 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) [2022-03-18 22:22:37,226 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 [2022-03-18 22:22:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 22:22:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 22:22:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 22:22:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 22:22:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 22:22:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 22:22:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 22:22:37,300 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 22:22:37,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 22:22:37,425 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 22:22:37,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 22:22:37,430 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-03-18 22:22:37,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:22:37 BoogieIcfgContainer [2022-03-18 22:22:37,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 22:22:37,432 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 22:22:37,432 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 22:22:37,433 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 22:22:37,436 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:22:37" (1/1) ... [2022-03-18 22:22:48,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:22:48 BasicIcfg [2022-03-18 22:22:48,151 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 22:22:48,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 22:22:48,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 22:22:48,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 22:22:48,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 10:22:36" (1/4) ... [2022-03-18 22:22:48,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f356a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:22:48, skipping insertion in model container [2022-03-18 22:22:48,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:22:37" (2/4) ... [2022-03-18 22:22:48,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f356a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:22:48, skipping insertion in model container [2022-03-18 22:22:48,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:22:37" (3/4) ... [2022-03-18 22:22:48,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f356a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 10:22:48, skipping insertion in model container [2022-03-18 22:22:48,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:22:48" (4/4) ... [2022-03-18 22:22:48,158 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de62.cqvasr [2022-03-18 22:22:48,163 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 22:22:48,163 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 22:22:48,202 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 22:22:48,208 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 [2022-03-18 22:22:48,209 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 22:22:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 22:22:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 22:22:48,224 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:22:48,225 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:22:48,225 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:22:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:22:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 430051023, now seen corresponding path program 1 times [2022-03-18 22:22:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:22:48,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683367556] [2022-03-18 22:22:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:22:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:22:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:22:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:22:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:22:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683367556] [2022-03-18 22:22:48,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683367556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:22:48,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:22:48,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 22:22:48,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690199018] [2022-03-18 22:22:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:22:48,396 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 22:22:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:22:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 22:22:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:22:48,427 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:22:48,470 INFO L93 Difference]: Finished difference Result 43 states and 66 transitions. [2022-03-18 22:22:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 22:22:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 22:22:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:22:48,478 INFO L225 Difference]: With dead ends: 43 [2022-03-18 22:22:48,478 INFO L226 Difference]: Without dead ends: 18 [2022-03-18 22:22:48,481 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:22:48,486 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:22:48,488 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:22:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-18 22:22:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-18 22:22:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-03-18 22:22:48,517 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 17 [2022-03-18 22:22:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:22:48,518 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-03-18 22:22:48,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-03-18 22:22:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 22:22:48,520 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:22:48,520 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:22:48,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 22:22:48,520 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:22:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:22:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash -514488111, now seen corresponding path program 1 times [2022-03-18 22:22:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:22:48,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464630558] [2022-03-18 22:22:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:22:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:22:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:22:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:22:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:22:48,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464630558] [2022-03-18 22:22:48,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464630558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:22:48,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:22:48,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 22:22:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330220162] [2022-03-18 22:22:48,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:22:48,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 22:22:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:22:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 22:22:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 22:22:48,632 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:22:48,725 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2022-03-18 22:22:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 22:22:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 22:22:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:22:48,727 INFO L225 Difference]: With dead ends: 28 [2022-03-18 22:22:48,727 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 22:22:48,727 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-18 22:22:48,729 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 22:22:48,729 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 22:22:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 22:22:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-03-18 22:22:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-03-18 22:22:48,734 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 17 [2022-03-18 22:22:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:22:48,738 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-03-18 22:22:48,738 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:22:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-03-18 22:22:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 22:22:48,739 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:22:48,739 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:22:48,740 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 22:22:48,740 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:22:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:22:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2030445491, now seen corresponding path program 1 times [2022-03-18 22:22:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:22:48,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708306046] [2022-03-18 22:22:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:22:48,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:22:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:22:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:22:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:22:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708306046] [2022-03-18 22:22:48,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708306046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:22:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012348326] [2022-03-18 22:22:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:22:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:22:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:22:48,971 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) [2022-03-18 22:22:48,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 22:22:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:22:49,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 22:22:49,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:22:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:22:49,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:23:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:23:04,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012348326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:23:04,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:23:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2022-03-18 22:23:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232691952] [2022-03-18 22:23:04,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:23:04,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 22:23:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:23:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 22:23:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 22:23:04,836 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:23:05,886 INFO L93 Difference]: Finished difference Result 54 states and 80 transitions. [2022-03-18 22:23:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 22:23:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 22:23:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:23:05,889 INFO L225 Difference]: With dead ends: 54 [2022-03-18 22:23:05,889 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 22:23:05,890 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2022-03-18 22:23:05,893 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 22:23:05,894 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 52 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 22:23:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 22:23:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2022-03-18 22:23:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-03-18 22:23:05,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 18 [2022-03-18 22:23:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:23:05,901 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-03-18 22:23:05,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-03-18 22:23:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-18 22:23:05,902 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:23:05,904 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:23:05,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 22:23:06,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:23:06,128 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:23:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:23:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash -869752682, now seen corresponding path program 1 times [2022-03-18 22:23:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:23:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006319149] [2022-03-18 22:23:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:23:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:23:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:23:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:23:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:23:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:23:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:23:06,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006319149] [2022-03-18 22:23:06,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006319149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:23:06,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602028011] [2022-03-18 22:23:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:23:06,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:23:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:23:06,404 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) [2022-03-18 22:23:06,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 22:23:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:23:06,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 22:23:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:23:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 22:23:06,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:23:08,758 WARN L833 $PredicateComparison]: unable to prove that (forall ((aux_mod_v_main_~z~0_19_65 Int)) (or (< 0 (mod (+ (* aux_mod_v_main_~z~0_19_65 4294967295) c_main_~x~0 c_main_~z~0) 4294967296)) (<= aux_mod_v_main_~z~0_19_65 0) (<= 4294967296 aux_mod_v_main_~z~0_19_65))) is different from false [2022-03-18 22:23:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-03-18 22:23:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602028011] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:23:08,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:23:08,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2022-03-18 22:23:08,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689031462] [2022-03-18 22:23:08,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:23:08,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 22:23:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:23:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 22:23:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2022-03-18 22:23:08,901 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:21,392 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (<= c_main_~x~0 (* (div c_main_~x~0 4294967296) 4294967296)) (let ((.cse0 (+ c_main_~x~0 c_main_~z~0))) (<= .cse0 (* (div .cse0 4294967296) 4294967296))) (<= (div (+ (- 4294967296) (* (- 4294967295) c_main_~z~0)) (- 4294967296)) (+ (div (* 4294967295 c_main_~z~0) 4294967296) 1)) (forall ((aux_mod_v_main_~z~0_19_65 Int)) (or (< 0 (mod (+ (* aux_mod_v_main_~z~0_19_65 4294967295) c_main_~x~0 c_main_~z~0) 4294967296)) (<= aux_mod_v_main_~z~0_19_65 0) (<= 4294967296 aux_mod_v_main_~z~0_19_65))) (<= (div (+ (* (- 4294967295) c_main_~y~0) (- 4294967296)) (- 4294967296)) (+ (div (* 4294967295 c_main_~y~0) 4294967296) 1)) (= |c_#NULL.offset| |c_old(#NULL.offset)|)) is different from false [2022-03-18 22:23:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:23:22,343 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2022-03-18 22:23:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 22:23:22,344 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-03-18 22:23:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:23:22,345 INFO L225 Difference]: With dead ends: 49 [2022-03-18 22:23:22,345 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 22:23:22,346 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=215, Invalid=847, Unknown=2, NotChecked=126, Total=1190 [2022-03-18 22:23:22,346 INFO L912 BasicCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 22:23:22,347 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 65 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 183 Invalid, 0 Unknown, 34 Unchecked, 0.5s Time] [2022-03-18 22:23:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 22:23:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2022-03-18 22:23:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-03-18 22:23:22,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 19 [2022-03-18 22:23:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:23:22,353 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-03-18 22:23:22,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2022-03-18 22:23:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 22:23:22,354 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:23:22,354 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:23:22,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 22:23:22,567 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,SelfDestructingSolverStorable3 [2022-03-18 22:23:22,568 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:23:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:23:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash -392821618, now seen corresponding path program 2 times [2022-03-18 22:23:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:23:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454206942] [2022-03-18 22:23:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:23:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:23:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:23:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:23:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:23:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:23:22,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:23:22,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454206942] [2022-03-18 22:23:22,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454206942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:23:22,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782168031] [2022-03-18 22:23:22,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 22:23:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:23:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:23:22,864 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) [2022-03-18 22:23:22,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 22:23:22,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 22:23:22,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 22:23:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 22:23:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:23:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 22:23:23,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:23:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 22:23:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782168031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:23:30,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:23:30,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 19 [2022-03-18 22:23:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845270208] [2022-03-18 22:23:30,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:23:30,571 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 22:23:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:23:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 22:23:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=278, Unknown=3, NotChecked=0, Total=342 [2022-03-18 22:23:30,572 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:33,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-18 22:23:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:23:36,059 INFO L93 Difference]: Finished difference Result 48 states and 70 transitions. [2022-03-18 22:23:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 22:23:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-18 22:23:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:23:36,060 INFO L225 Difference]: With dead ends: 48 [2022-03-18 22:23:36,060 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 22:23:36,061 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=268, Invalid=1061, Unknown=3, NotChecked=0, Total=1332 [2022-03-18 22:23:36,062 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 79 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:23:36,062 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 69 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 193 Invalid, 1 Unknown, 32 Unchecked, 3.0s Time] [2022-03-18 22:23:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 22:23:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 22:23:36,063 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) [2022-03-18 22:23:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 22:23:36,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-03-18 22:23:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:23:36,064 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 22:23:36,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:23:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 22:23:36,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 22:23:36,066 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 22:23:36,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 22:23:36,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:23:36,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 22:23:36,414 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|)) [2022-03-18 22:23:36,414 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 22:23:36,414 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 22:23:36,414 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 22:23:36,414 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 12 55) the Hoare annotation is: true [2022-03-18 22:23:36,415 INFO L885 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: true [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L885 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: true [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point L29-1(lines 13 55) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point L35-1(lines 13 55) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point L41-1(lines 13 55) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L882 garLoopResultBuilder]: For program point L47-1(lines 13 55) no Hoare annotation was computed. [2022-03-18 22:23:36,415 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: (= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))) [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 12 55) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 12 55) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-03-18 22:23:36,416 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2022-03-18 22:23:36,419 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-03-18 22:23:36,420 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 22:23:36,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 10:23:36 BasicIcfg [2022-03-18 22:23:36,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 22:23:36,428 INFO L158 Benchmark]: Toolchain (without parser) took 59478.38ms. Allocated memory was 176.2MB in the beginning and 248.5MB in the end (delta: 72.4MB). Free memory was 149.6MB in the beginning and 135.6MB in the end (delta: 14.0MB). Peak memory consumption was 86.8MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,428 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 22:23:36,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.96ms. Allocated memory was 176.2MB in the beginning and 248.5MB in the end (delta: 72.4MB). Free memory was 149.4MB in the beginning and 220.7MB in the end (delta: -71.3MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,428 INFO L158 Benchmark]: Boogie Preprocessor took 37.39ms. Allocated memory is still 248.5MB. Free memory was 220.7MB in the beginning and 219.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,429 INFO L158 Benchmark]: RCFGBuilder took 233.39ms. Allocated memory is still 248.5MB. Free memory was 219.1MB in the beginning and 207.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,429 INFO L158 Benchmark]: IcfgTransformer took 10718.81ms. Allocated memory is still 248.5MB. Free memory was 207.1MB in the beginning and 156.8MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,429 INFO L158 Benchmark]: TraceAbstraction took 48274.84ms. Allocated memory is still 248.5MB. Free memory was 156.2MB in the beginning and 135.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.6MB. Max. memory is 8.0GB. [2022-03-18 22:23:36,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.96ms. Allocated memory was 176.2MB in the beginning and 248.5MB in the end (delta: 72.4MB). Free memory was 149.4MB in the beginning and 220.7MB in the end (delta: -71.3MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.39ms. Allocated memory is still 248.5MB. Free memory was 220.7MB in the beginning and 219.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 233.39ms. Allocated memory is still 248.5MB. Free memory was 219.1MB in the beginning and 207.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 10718.81ms. Allocated memory is still 248.5MB. Free memory was 207.1MB in the beginning and 156.8MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 48274.84ms. Allocated memory is still 248.5MB. Free memory was 156.2MB in the beginning and 135.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.6MB. 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: 7]: 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 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 244 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 170 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 648 IncrementalHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 74 mSDtfsCounter, 648 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 96 SyntacticMatches, 17 SemanticMatches, 104 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 68, 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, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 20 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 450 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 194 ConstructedInterpolants, 4 QuantifiedInterpolants, 1199 SizeOfPredicates, 11 NumberOfNonLiveVariables, 234 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 7/21 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-03-18 22:23:36,586 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...