/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_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:55:01,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:55:01,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:55:01,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:55:01,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:55:01,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:55:01,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:55:01,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:55:01,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:55:01,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:55:01,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:55:01,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:55:01,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:55:01,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:55:01,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:55:01,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:55:01,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:55:01,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:55:01,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:55:01,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:55:01,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:55:01,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:55:01,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:55:01,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:55:01,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:55:01,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:55:01,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:55:01,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:55:01,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:55:01,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:55:01,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:55:01,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:55:01,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:55:01,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:55:01,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:55:01,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:55:01,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:55:01,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:55:01,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:55:01,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:55:01,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:55:01,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:55:01,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:55:01,444 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:55:01,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:55:01,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:55:01,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:55:01,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:55:01,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:55:01,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:55:01,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:55:01,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:55:01,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:55:01,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:55:01,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:55:01,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:55:01,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:55:01,448 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:55:01,448 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:55:01,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:55:01,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:55:01,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:55:01,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:55:01,674 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:55:01,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound20.c [2022-01-10 14:55:01,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11280c08c/0f7babb2b5374fccadfd0100f9a003ef/FLAGf12443a1b [2022-01-10 14:55:02,086 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:55:02,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound20.c [2022-01-10 14:55:02,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11280c08c/0f7babb2b5374fccadfd0100f9a003ef/FLAGf12443a1b [2022-01-10 14:55:02,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11280c08c/0f7babb2b5374fccadfd0100f9a003ef [2022-01-10 14:55:02,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:55:02,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:55:02,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:55:02,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:55:02,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:55:02,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f39987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02, skipping insertion in model container [2022-01-10 14:55:02,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:55:02,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:55:02,267 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/geo2-ll_valuebound20.c[525,538] [2022-01-10 14:55:02,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:55:02,292 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:55:02,301 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/geo2-ll_valuebound20.c[525,538] [2022-01-10 14:55:02,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:55:02,320 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:55:02,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02 WrapperNode [2022-01-10 14:55:02,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:55:02,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:55:02,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:55:02,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:55:02,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,360 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 53 [2022-01-10 14:55:02,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:55:02,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:55:02,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:55:02,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:55:02,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:55:02,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:55:02,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:55:02,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:55:02,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:02,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:55:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:55:02,424 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 14:55:02,427 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 14:55:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:55:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:55:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:55:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:55:02,501 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:55:02,502 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:55:02,949 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:55:02,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:55:02,955 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:55:02,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:55:02 BoogieIcfgContainer [2022-01-10 14:55:02,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:55:02,957 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:55:02,957 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:55:02,968 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:55:02,970 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:55:02" (1/1) ... [2022-01-10 14:55:03,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:55:03 BasicIcfg [2022-01-10 14:55:03,053 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:55:03,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:55:03,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:55:03,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:55:03,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:55:02" (1/4) ... [2022-01-10 14:55:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c762586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:55:03, skipping insertion in model container [2022-01-10 14:55:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:55:02" (2/4) ... [2022-01-10 14:55:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c762586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:55:03, skipping insertion in model container [2022-01-10 14:55:03,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:55:02" (3/4) ... [2022-01-10 14:55:03,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c762586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:55:03, skipping insertion in model container [2022-01-10 14:55:03,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:55:03" (4/4) ... [2022-01-10 14:55:03,060 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound20.cTransformedIcfg [2022-01-10 14:55:03,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:55:03,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 14:55:03,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:55:03,111 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 14:55:03,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 14:55:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 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 14:55:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 14:55:03,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:55:03,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:55:03,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:55:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:55:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1247337372, now seen corresponding path program 1 times [2022-01-10 14:55:03,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:55:03,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034053826] [2022-01-10 14:55:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:55:03,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:55:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:55:03,333 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 14:55:03,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:55:03,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034053826] [2022-01-10 14:55:03,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034053826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:55:03,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:55:03,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:55:03,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885468885] [2022-01-10 14:55:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:55:03,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:55:03,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:55:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:55:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:55:03,377 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 14:55:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:55:03,390 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-01-10 14:55:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:55:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 14:55:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:55:03,402 INFO L225 Difference]: With dead ends: 37 [2022-01-10 14:55:03,403 INFO L226 Difference]: Without dead ends: 16 [2022-01-10 14:55:03,405 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 14:55:03,408 INFO L933 BasicCegarLoop]: 20 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, 20 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 14:55:03,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:55:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-10 14:55:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-10 14:55:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 14:55:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-01-10 14:55:03,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2022-01-10 14:55:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:55:03,433 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-01-10 14:55:03,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 14:55:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-01-10 14:55:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 14:55:03,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:55:03,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:55:03,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:55:03,437 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:55:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:55:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash -358910170, now seen corresponding path program 1 times [2022-01-10 14:55:03,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:55:03,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896439608] [2022-01-10 14:55:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:55:03,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:55:03,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:55:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563492539] [2022-01-10 14:55:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:55:03,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:55:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:55:03,504 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 14:55:03,505 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 14:55:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:55:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 14:55:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:55:04,246 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 14:55:04,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:55:04,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:55:04,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896439608] [2022-01-10 14:55:04,248 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:55:04,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563492539] [2022-01-10 14:55:04,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563492539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:55:04,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:55:04,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:55:04,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870721156] [2022-01-10 14:55:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:55:04,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:55:04,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:55:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:55:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:55:04,257 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 14:55:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:55:04,611 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-01-10 14:55:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:55:04,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 14:55:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:55:04,613 INFO L225 Difference]: With dead ends: 26 [2022-01-10 14:55:04,613 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 14:55:04,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:55:04,615 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:55:04,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 27 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:55:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 14:55:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 14:55:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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 14:55:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-10 14:55:04,621 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2022-01-10 14:55:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:55:04,621 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-10 14:55:04,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 14:55:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-10 14:55:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:55:04,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:55:04,622 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:55:04,650 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 14:55:04,823 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 [2022-01-10 14:55:04,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:55:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:55:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1239988642, now seen corresponding path program 1 times [2022-01-10 14:55:04,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:55:04,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5823817] [2022-01-10 14:55:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:55:04,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:55:04,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:55:04,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84668278] [2022-01-10 14:55:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:55:04,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:55:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:55:04,874 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 14:55:04,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:55:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:55:05,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 14:55:05,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:55:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:55:06,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:55:17,646 WARN L838 $PredicateComparison]: unable to prove that (= (mod (let ((.cse1 (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int|))) (let ((.cse0 (mod (+ (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| .cse1) 18446744073709551616) 1) 18446744073709551616))) (+ (mod (* .cse0 .cse1) 18446744073709551616) (mod (* (mod (* (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| .cse1) 18446744073709551616) .cse1) 18446744073709551616) 18446744073709551615) 18446744073709551616) (mod (* 18446744073709551615 .cse0) 18446744073709551616) 1))) 18446744073709551616) 0) is different from false [2022-01-10 14:55:47,009 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int|))) (let ((.cse3 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| .cse1) 18446744073709551616)) (.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| .cse1) 18446744073709551616))) (or (= (mod (let ((.cse0 (mod (+ .cse3 1) 18446744073709551616))) (+ (mod (* .cse0 .cse1) 18446744073709551616) (mod (* (mod (* .cse2 .cse1) 18446744073709551616) 18446744073709551615) 18446744073709551616) (mod (* 18446744073709551615 .cse0) 18446744073709551616) 1)) 18446744073709551616) 0) (not (= (mod (+ .cse3 (mod (* 18446744073709551615 |c_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 18446744073709551616) (mod (* 18446744073709551615 .cse2) 18446744073709551616) 1) 18446744073709551616) 0))))) is different from true [2022-01-10 14:55:53,055 WARN L860 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int|))) (let ((.cse1 (mod .cse0 18446744073709551616))) (let ((.cse2 (mod (+ 1 .cse1) 18446744073709551616))) (+ (mod (* 18446744073709551615 (mod (* .cse0 .cse1) 18446744073709551616)) 18446744073709551616) (mod (* 18446744073709551615 .cse2) 18446744073709551616) (mod (* .cse0 .cse2) 18446744073709551616) 1)))) 18446744073709551616) 0) is different from true [2022-01-10 14:56:01,071 WARN L860 $PredicateComparison]: unable to prove that (or (= (mod (let ((.cse0 (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int|))) (let ((.cse1 (mod .cse0 18446744073709551616))) (let ((.cse2 (mod (+ 1 .cse1) 18446744073709551616))) (+ (mod (* 18446744073709551615 (mod (* .cse0 .cse1) 18446744073709551616)) 18446744073709551616) (mod (* 18446744073709551615 .cse2) 18446744073709551616) (mod (* .cse0 .cse2) 18446744073709551616) 1)))) 18446744073709551616) 0) (= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0)) is different from true [2022-01-10 14:56:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 14:56:11,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:56:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5823817] [2022-01-10 14:56:11,457 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:56:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84668278] [2022-01-10 14:56:11,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84668278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:56:11,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:56:11,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-10 14:56:11,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989496693] [2022-01-10 14:56:11,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:56:11,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 14:56:11,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:56:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 14:56:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=79, Unknown=8, NotChecked=84, Total=210 [2022-01-10 14:56:11,459 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 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)