/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:43:51,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:43:51,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:43:51,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:43:51,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:43:51,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:43:51,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:43:51,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:43:51,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:43:51,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:43:51,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:43:51,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:43:51,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:43:51,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:43:51,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:43:51,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:43:51,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:43:51,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:43:51,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:43:51,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:43:51,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:43:51,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:43:51,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:43:51,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:43:51,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:43:51,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:43:51,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:43:51,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:43:51,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:43:51,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:43:51,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:43:51,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:43:51,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:43:51,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:43:51,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:43:51,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:43:51,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:43:51,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:43:51,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:43:51,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:43:51,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:43:51,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:43:51,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:43:51,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:43:51,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:43:51,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:43:51,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:43:51,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:43:51,205 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:43:51,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:43:51,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:43:51,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:43:51,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:43:51,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:43:51,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:43:51,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:43:51,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:43:51,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:43:51,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:43:51,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:43:51,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:43:51,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:43:51,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:43:51,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:43:51,211 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:43:51,211 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:43:51,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:43:51,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:43:51,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:43:51,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:43:51,444 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:43:51,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound20.c [2022-01-11 02:43:51,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97d5a85/440b5dad1f3c47299d88430d3b88a39d/FLAGdef3f28c3 [2022-01-11 02:43:51,907 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:43:51,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound20.c [2022-01-11 02:43:51,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97d5a85/440b5dad1f3c47299d88430d3b88a39d/FLAGdef3f28c3 [2022-01-11 02:43:51,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97d5a85/440b5dad1f3c47299d88430d3b88a39d [2022-01-11 02:43:51,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:43:51,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:43:51,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:43:51,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:43:51,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:43:51,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:43:51" (1/1) ... [2022-01-11 02:43:51,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbcc4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:51, skipping insertion in model container [2022-01-11 02:43:51,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:43:51" (1/1) ... [2022-01-11 02:43:51,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:43:51,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:43:52,087 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/prod4br-ll_valuebound20.c[524,537] [2022-01-11 02:43:52,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:43:52,113 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:43:52,141 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/prod4br-ll_valuebound20.c[524,537] [2022-01-11 02:43:52,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:43:52,168 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:43:52,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52 WrapperNode [2022-01-11 02:43:52,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:43:52,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:43:52,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:43:52,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:43:52,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,194 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 75 [2022-01-11 02:43:52,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:43:52,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:43:52,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:43:52,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:43:52,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:43:52,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:43:52,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:43:52,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:43:52,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (1/1) ... [2022-01-11 02:43:52,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:43:52,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:43:52,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:43:52,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:43:52,341 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:43:52,343 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:43:53,276 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:43:53,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:43:53,282 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 02:43:53,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:43:53 BoogieIcfgContainer [2022-01-11 02:43:53,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:43:53,284 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:43:53,284 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:43:53,289 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:43:53,291 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:43:53" (1/1) ... [2022-01-11 02:43:53,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:43:53 BasicIcfg [2022-01-11 02:43:53,383 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:43:53,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:43:53,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:43:53,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:43:53,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:43:51" (1/4) ... [2022-01-11 02:43:53,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f69b9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:43:53, skipping insertion in model container [2022-01-11 02:43:53,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:43:52" (2/4) ... [2022-01-11 02:43:53,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f69b9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:43:53, skipping insertion in model container [2022-01-11 02:43:53,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:43:53" (3/4) ... [2022-01-11 02:43:53,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f69b9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:43:53, skipping insertion in model container [2022-01-11 02:43:53,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:43:53" (4/4) ... [2022-01-11 02:43:53,389 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound20.cTransformedIcfg [2022-01-11 02:43:53,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:43:53,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 02:43:53,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:43:53,429 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:43:53,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 02:43:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.6) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:43:53,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:43:53,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:43:53,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:43:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:43:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -537283417, now seen corresponding path program 1 times [2022-01-11 02:43:53,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:43:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90466887] [2022-01-11 02:43:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:43:53,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:43:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:43:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:43:53,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:43:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90466887] [2022-01-11 02:43:53,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90466887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:43:53,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:43:53,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:43:53,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512490717] [2022-01-11 02:43:53,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:43:53,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:43:53,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:43:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:43:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:43:53,666 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.6) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:43:53,687 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2022-01-11 02:43:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:43:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:43:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:43:53,697 INFO L225 Difference]: With dead ends: 55 [2022-01-11 02:43:53,697 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 02:43:53,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:43:53,705 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:43:53,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:43:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 02:43:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 02:43:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-11 02:43:53,737 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2022-01-11 02:43:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:43:53,738 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-11 02:43:53,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-11 02:43:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:43:53,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:43:53,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:43:53,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:43:53,741 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:43:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:43:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1456310678, now seen corresponding path program 1 times [2022-01-11 02:43:53,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:43:53,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058648125] [2022-01-11 02:43:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:43:53,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:43:53,800 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:43:53,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353369417] [2022-01-11 02:43:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:43:53,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:43:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:43:53,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:43:53,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:43:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:43:54,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-11 02:43:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:43:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:43:55,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:43:55,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:43:55,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058648125] [2022-01-11 02:43:55,183 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:43:55,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353369417] [2022-01-11 02:43:55,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353369417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:43:55,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:43:55,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 02:43:55,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250553432] [2022-01-11 02:43:55,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:43:55,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 02:43:55,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:43:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 02:43:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:43:55,191 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:43:56,033 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-01-11 02:43:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 02:43:56,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:43:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:43:56,037 INFO L225 Difference]: With dead ends: 42 [2022-01-11 02:43:56,037 INFO L226 Difference]: Without dead ends: 40 [2022-01-11 02:43:56,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-01-11 02:43:56,039 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 178 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:43:56,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 28 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 02:43:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-11 02:43:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2022-01-11 02:43:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-11 02:43:56,045 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2022-01-11 02:43:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:43:56,046 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-11 02:43:56,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:43:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-11 02:43:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:43:56,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:43:56,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:43:56,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 02:43:56,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:43:56,255 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:43:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:43:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1189475461, now seen corresponding path program 1 times [2022-01-11 02:43:56,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:43:56,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074794947] [2022-01-11 02:43:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:43:56,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:43:56,303 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:43:56,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105721989] [2022-01-11 02:43:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:43:56,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:43:56,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:43:56,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:43:56,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:43:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:43:56,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-11 02:43:56,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:43:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:43:59,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:43:59,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:43:59,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074794947] [2022-01-11 02:43:59,277 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:43:59,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105721989] [2022-01-11 02:43:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105721989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:43:59,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:43:59,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-11 02:43:59,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295888785] [2022-01-11 02:43:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:43:59,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 02:43:59,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:43:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 02:43:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:43:59,280 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:44:01,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:44:11,384 WARN L228 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 66 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:44:25,567 WARN L228 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 68 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:44:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:44:31,133 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-01-11 02:44:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 02:44:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:44:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:44:31,134 INFO L225 Difference]: With dead ends: 40 [2022-01-11 02:44:31,134 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 02:44:31,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-11 02:44:31,136 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 104 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-11 02:44:31,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 59 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-01-11 02:44:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 02:44:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-01-11 02:44:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:44:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-01-11 02:44:31,142 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2022-01-11 02:44:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:44:31,142 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-01-11 02:44:31,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:44:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-01-11 02:44:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:44:31,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:44:31,143 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:44:31,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:44:31,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-11 02:44:31,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:44:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:44:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1779599935, now seen corresponding path program 1 times [2022-01-11 02:44:31,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:44:31,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19720006] [2022-01-11 02:44:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:44:31,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:44:31,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:44:31,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272292014] [2022-01-11 02:44:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:44:31,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:44:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:44:31,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:44:31,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process