/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_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:23:28,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:23:28,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:23:28,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:23:28,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:23:28,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:23:28,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:23:28,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:23:28,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:23:28,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:23:28,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:23:28,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:23:28,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:23:28,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:23:28,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:23:28,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:23:28,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:23:28,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:23:28,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:23:28,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:23:28,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:23:28,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:23:28,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:23:28,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:23:28,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:23:28,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:23:28,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:23:28,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:23:28,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:23:28,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:23:28,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:23:28,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:23:28,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:23:28,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:23:28,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:23:28,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:23:28,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:23:28,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:23:28,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:23:28,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:23:28,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:23:28,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:23:28,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:23:28,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:23:28,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:23:28,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:23:28,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:23:28,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:23:28,299 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:23:28,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:23:28,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:23:28,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:23:28,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:23:28,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:23:28,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:23:28,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:23:28,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:23:28,302 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:23:28,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:23:28,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:23:28,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:23:28,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:23:28,303 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:23:28,304 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:23:28,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:23:28,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:23:28,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:23:28,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:23:28,528 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:23:28,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2022-01-10 09:23:28,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea356821c/79a2a5bebdc74abf8ce7e36209a829eb/FLAG8665feef0 [2022-01-10 09:23:28,895 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:23:28,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2022-01-10 09:23:28,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea356821c/79a2a5bebdc74abf8ce7e36209a829eb/FLAG8665feef0 [2022-01-10 09:23:29,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea356821c/79a2a5bebdc74abf8ce7e36209a829eb [2022-01-10 09:23:29,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:23:29,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:23:29,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:23:29,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:23:29,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:23:29,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55577791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29, skipping insertion in model container [2022-01-10 09:23:29,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:23:29,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:23:29,436 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/sqrt1-ll_valuebound50.c[520,533] [2022-01-10 09:23:29,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:23:29,472 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:23:29,481 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/sqrt1-ll_valuebound50.c[520,533] [2022-01-10 09:23:29,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:23:29,496 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:23:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29 WrapperNode [2022-01-10 09:23:29,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:23:29,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:23:29,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:23:29,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:23:29,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,520 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 70 [2022-01-10 09:23:29,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:23:29,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:23:29,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:23:29,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:23:29,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:23:29,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:23:29,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:23:29,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:23:29,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (1/1) ... [2022-01-10 09:23:29,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:23:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:23:29,568 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) [2022-01-10 09:23:29,570 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 [2022-01-10 09:23:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:23:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:23:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:23:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:23:29,632 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:23:29,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:23:30,065 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:23:30,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:23:30,069 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 09:23:30,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:23:30 BoogieIcfgContainer [2022-01-10 09:23:30,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:23:30,071 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:23:30,071 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:23:30,072 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:23:30,073 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:23:30" (1/1) ... [2022-01-10 09:23:30,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:23:30 BasicIcfg [2022-01-10 09:23:30,145 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:23:30,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:23:30,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:23:30,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:23:30,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:23:29" (1/4) ... [2022-01-10 09:23:30,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d67678d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:23:30, skipping insertion in model container [2022-01-10 09:23:30,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:23:29" (2/4) ... [2022-01-10 09:23:30,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d67678d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:23:30, skipping insertion in model container [2022-01-10 09:23:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:23:30" (3/4) ... [2022-01-10 09:23:30,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d67678d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:23:30, skipping insertion in model container [2022-01-10 09:23:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:23:30" (4/4) ... [2022-01-10 09:23:30,156 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound50.cTransformedIcfg [2022-01-10 09:23:30,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:23:30,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 09:23:30,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:23:30,206 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 [2022-01-10 09:23:30,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 09:23:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 33 states have internal predecessors, (43), 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) [2022-01-10 09:23:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 09:23:30,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:23:30,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:23:30,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:23:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:23:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash 536551784, now seen corresponding path program 1 times [2022-01-10 09:23:30,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:23:30,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190142700] [2022-01-10 09:23:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:30,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:23:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:23:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:30,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:23:30,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190142700] [2022-01-10 09:23:30,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190142700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:23:30,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:23:30,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:23:30,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554488951] [2022-01-10 09:23:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:23:30,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:23:30,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:23:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:23:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:23:30,370 INFO L87 Difference]: Start difference. First operand has 34 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 33 states have internal predecessors, (43), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-01-10 09:23:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:23:30,386 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2022-01-10 09:23:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:23:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-01-10 09:23:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:23:30,395 INFO L225 Difference]: With dead ends: 65 [2022-01-10 09:23:30,395 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 09:23:30,400 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 [2022-01-10 09:23:30,402 INFO L933 BasicCegarLoop]: 34 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, 34 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 [2022-01-10 09:23:30,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:23:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 09:23:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 09:23:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 29 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) [2022-01-10 09:23:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-01-10 09:23:30,429 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 7 [2022-01-10 09:23:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:23:30,429 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-01-10 09:23:30,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-01-10 09:23:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-01-10 09:23:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 09:23:30,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:23:30,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:23:30,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:23:30,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:23:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:23:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 537475305, now seen corresponding path program 1 times [2022-01-10 09:23:30,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:23:30,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374266214] [2022-01-10 09:23:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:30,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:23:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:23:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:30,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:23:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374266214] [2022-01-10 09:23:30,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374266214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:23:30,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:23:30,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:23:30,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53169969] [2022-01-10 09:23:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:23:30,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:23:30,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:23:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:23:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:23:30,587 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-10 09:23:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:23:30,788 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-01-10 09:23:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:23:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-01-10 09:23:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:23:30,789 INFO L225 Difference]: With dead ends: 31 [2022-01-10 09:23:30,789 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 09:23:30,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:23:30,790 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:23:30,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 09:23:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 09:23:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-01-10 09:23:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 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) [2022-01-10 09:23:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-01-10 09:23:30,797 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2022-01-10 09:23:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:23:30,797 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-01-10 09:23:30,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-10 09:23:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-01-10 09:23:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 09:23:30,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:23:30,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:23:30,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 09:23:30,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:23:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:23:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1117728014, now seen corresponding path program 1 times [2022-01-10 09:23:30,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:23:30,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693743045] [2022-01-10 09:23:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:30,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:23:30,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:23:30,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048918594] [2022-01-10 09:23:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:30,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:23:30,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:23:30,824 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) [2022-01-10 09:23:30,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 09:23:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:23:30,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:23:30,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:23:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:30,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:23:30,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:23:30,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693743045] [2022-01-10 09:23:30,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:23:30,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048918594] [2022-01-10 09:23:30,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048918594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:23:30,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:23:30,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:23:30,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476686372] [2022-01-10 09:23:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:23:30,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:23:30,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:23:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:23:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:23:30,937 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 09:23:32,986 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 [] [2022-01-10 09:23:35,454 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 [] [2022-01-10 09:23:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:23:35,478 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-01-10 09:23:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:23:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-01-10 09:23:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:23:35,479 INFO L225 Difference]: With dead ends: 48 [2022-01-10 09:23:35,479 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 09:23:35,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:23:35,480 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-10 09:23:35,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 41 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-01-10 09:23:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 09:23:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-01-10 09:23:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 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) [2022-01-10 09:23:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-01-10 09:23:35,490 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 9 [2022-01-10 09:23:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:23:35,490 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-01-10 09:23:35,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 09:23:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-01-10 09:23:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 09:23:35,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:23:35,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:23:35,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:23:35,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:23:35,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:23:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:23:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 394833203, now seen corresponding path program 1 times [2022-01-10 09:23:35,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:23:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375376587] [2022-01-10 09:23:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:35,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:23:35,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:23:35,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184131319] [2022-01-10 09:23:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:35,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:23:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:23:35,719 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) [2022-01-10 09:23:35,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:23:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:23:35,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:23:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:23:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:35,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:23:35,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:23:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375376587] [2022-01-10 09:23:35,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:23:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184131319] [2022-01-10 09:23:35,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184131319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:23:35,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:23:35,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:23:35,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225699654] [2022-01-10 09:23:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:23:35,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:23:35,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:23:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:23:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:23:35,803 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-01-10 09:23:37,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:23:39,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:23:41,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:23:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:23:41,234 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-01-10 09:23:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:23:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2022-01-10 09:23:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:23:41,235 INFO L225 Difference]: With dead ends: 44 [2022-01-10 09:23:41,235 INFO L226 Difference]: Without dead ends: 34 [2022-01-10 09:23:41,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:23:41,236 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:23:41,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 09:23:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-10 09:23:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-10 09:23:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 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) [2022-01-10 09:23:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-01-10 09:23:41,247 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 11 [2022-01-10 09:23:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:23:41,247 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-01-10 09:23:41,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-01-10 09:23:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-01-10 09:23:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 09:23:41,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:23:41,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:23:41,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 09:23:41,459 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,SelfDestructingSolverStorable3 [2022-01-10 09:23:41,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:23:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:23:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 852635260, now seen corresponding path program 1 times [2022-01-10 09:23:41,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:23:41,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85166526] [2022-01-10 09:23:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:41,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:23:41,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:23:41,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534054361] [2022-01-10 09:23:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:23:41,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:23:41,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:23:41,484 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) [2022-01-10 09:23:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 09:23:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:23:41,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 09:23:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:23:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:41,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:23:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:23:58,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:23:58,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85166526] [2022-01-10 09:23:58,884 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:23:58,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534054361] [2022-01-10 09:23:58,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534054361] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:23:58,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:23:58,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2022-01-10 09:23:58,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563192108] [2022-01-10 09:23:58,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:23:58,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 09:23:58,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:23:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 09:23:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 09:23:58,886 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:01,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:05,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:07,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:09,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:18,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:20,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:20,518 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-01-10 09:24:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 09:24:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 09:24:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:20,519 INFO L225 Difference]: With dead ends: 54 [2022-01-10 09:24:20,519 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 09:24:20,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=109, Invalid=196, Unknown=1, NotChecked=0, Total=306 [2022-01-10 09:24:20,520 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 98 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 90 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:20,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 37 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 12.7s Time] [2022-01-10 09:24:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 09:24:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-01-10 09:24:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-01-10 09:24:20,534 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 17 [2022-01-10 09:24:20,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:20,534 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-01-10 09:24:20,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-01-10 09:24:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 09:24:20,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:20,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:20,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:20,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:20,741 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 09:24:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash 845912847, now seen corresponding path program 1 times [2022-01-10 09:24:20,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:20,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002480251] [2022-01-10 09:24:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:20,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:20,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:24:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263790343] [2022-01-10 09:24:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:20,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:20,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:20,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:20,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:24:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-10 09:24:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:21,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:24:29,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:29,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002480251] [2022-01-10 09:24:29,138 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:24:29,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263790343] [2022-01-10 09:24:29,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263790343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:29,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:24:29,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-01-10 09:24:29,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051172838] [2022-01-10 09:24:29,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:29,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 09:24:29,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 09:24:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:24:29,139 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2022-01-10 09:24:32,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:34,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:24:36,644 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 [] [2022-01-10 09:24:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:36,682 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-01-10 09:24:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 09:24:36,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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 27 [2022-01-10 09:24:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:36,682 INFO L225 Difference]: With dead ends: 52 [2022-01-10 09:24:36,682 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 09:24:36,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2022-01-10 09:24:36,683 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 101 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:36,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 34 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 09:24:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 09:24:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 09:24:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 09:24:36,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-01-10 09:24:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:36,684 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 09:24:36,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2022-01-10 09:24:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 09:24:36,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 09:24:36,686 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 09:24:36,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 09:24:36,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 09:24:36,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 09:24:36,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 09:24:36,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 09:24:36,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:36,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:36,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 09:24:49,087 WARN L228 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 81 DAG size of output: 52 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)