/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_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:29:13,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:29:13,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:29:13,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:29:13,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:29:13,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:29:13,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:29:13,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:29:13,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:29:13,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:29:13,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:29:13,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:29:13,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:29:13,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:29:13,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:29:13,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:29:13,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:29:13,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:29:13,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:29:13,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:29:13,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:29:13,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:29:13,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:29:13,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:29:13,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:29:13,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:29:13,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:29:13,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:29:13,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:29:13,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:29:13,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:29:13,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:29:13,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:29:13,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:29:13,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:29:13,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:29:13,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:29:13,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:29:13,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:29:13,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:29:13,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:29:13,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:29:14,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:29:14,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:29:14,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:29:14,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:29:14,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:29:14,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:29:14,047 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:29:14,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:29:14,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:29:14,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:29:14,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:29:14,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:29:14,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:29:14,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:29:14,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:29:14,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:29:14,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:29:14,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:29:14,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:29:14,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:29:14,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:29:14,051 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:29:14,052 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:29:14,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:29:14,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:29:14,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:29:14,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:29:14,268 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:29:14,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-01-10 20:29:14,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66774b04e/e9a3bdc23e0644a48eef3d340a3dda9b/FLAG450b7abb9 [2022-01-10 20:29:14,676 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:29:14,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-01-10 20:29:14,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66774b04e/e9a3bdc23e0644a48eef3d340a3dda9b/FLAG450b7abb9 [2022-01-10 20:29:14,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66774b04e/e9a3bdc23e0644a48eef3d340a3dda9b [2022-01-10 20:29:14,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:29:14,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:29:14,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:29:14,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:29:14,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:29:14,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:14,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739f022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14, skipping insertion in model container [2022-01-10 20:29:14,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:14,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:29:14,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:29:14,886 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/bresenham-ll_unwindbound10.c[597,610] [2022-01-10 20:29:14,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:29:14,919 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:29:14,928 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/bresenham-ll_unwindbound10.c[597,610] [2022-01-10 20:29:14,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:29:14,962 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:29:14,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14 WrapperNode [2022-01-10 20:29:14,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:29:14,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:29:14,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:29:14,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:29:14,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:14,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:14,990 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-01-10 20:29:14,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:29:14,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:29:14,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:29:14,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:29:14,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:14,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:29:15,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:29:15,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:29:15,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:29:15,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (1/1) ... [2022-01-10 20:29:15,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:29:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:29:15,035 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 20:29:15,036 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 20:29:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:29:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:29:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:29:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:29:15,095 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:29:15,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:29:15,447 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:29:15,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:29:15,451 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:29:15,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:29:15 BoogieIcfgContainer [2022-01-10 20:29:15,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:29:15,453 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:29:15,453 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:29:15,454 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:29:15,455 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:29:15" (1/1) ... [2022-01-10 20:29:15,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:29:15 BasicIcfg [2022-01-10 20:29:15,536 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:29:15,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:29:15,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:29:15,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:29:15,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:29:14" (1/4) ... [2022-01-10 20:29:15,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636e4abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:29:15, skipping insertion in model container [2022-01-10 20:29:15,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:29:14" (2/4) ... [2022-01-10 20:29:15,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636e4abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:29:15, skipping insertion in model container [2022-01-10 20:29:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:29:15" (3/4) ... [2022-01-10 20:29:15,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636e4abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:29:15, skipping insertion in model container [2022-01-10 20:29:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:29:15" (4/4) ... [2022-01-10 20:29:15,541 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.cTransformedIcfg [2022-01-10 20:29:15,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:29:15,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 20:29:15,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:29:15,572 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 20:29:15,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 20:29:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5) internal successors, (24), 18 states have internal predecessors, (24), 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 20:29:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:29:15,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:29:15,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:29:15,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:29:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:29:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1808969816, now seen corresponding path program 1 times [2022-01-10 20:29:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:29:15,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783147899] [2022-01-10 20:29:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:29:15,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:29:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:29:15,702 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 20:29:15,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:29:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783147899] [2022-01-10 20:29:15,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783147899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:29:15,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:29:15,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:29:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858561607] [2022-01-10 20:29:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:29:15,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:29:15,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:29:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:29:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:29:15,725 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5) internal successors, (24), 18 states have internal predecessors, (24), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:29:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:29:15,738 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-01-10 20:29:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:29:15,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-10 20:29:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:29:15,745 INFO L225 Difference]: With dead ends: 36 [2022-01-10 20:29:15,745 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 20:29:15,747 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 20:29:15,750 INFO L933 BasicCegarLoop]: 21 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, 21 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 20:29:15,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:29:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 20:29:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-10 20:29:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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 20:29:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-10 20:29:15,773 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2022-01-10 20:29:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:29:15,773 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-10 20:29:15,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:29:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-10 20:29:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:29:15,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:29:15,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:29:15,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:29:15,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:29:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:29:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1808938038, now seen corresponding path program 1 times [2022-01-10 20:29:15,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:29:15,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118199778] [2022-01-10 20:29:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:29:15,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:29:15,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:29:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646982677] [2022-01-10 20:29:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:29:15,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:29:15,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:29:15,832 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 20:29:15,834 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 20:29:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:29:15,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:29:15,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:29:16,802 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 20:29:16,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:29:16,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:29:16,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118199778] [2022-01-10 20:29:16,803 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:29:16,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646982677] [2022-01-10 20:29:16,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646982677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:29:16,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:29:16,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:29:16,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531574347] [2022-01-10 20:29:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:29:16,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:29:16,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:29:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:29:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:29:16,809 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 20:29:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:29:17,014 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-01-10 20:29:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:29:17,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-01-10 20:29:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:29:17,016 INFO L225 Difference]: With dead ends: 28 [2022-01-10 20:29:17,016 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 20:29:17,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:29:17,018 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:29:17,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:29:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 20:29:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-01-10 20:29:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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 20:29:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-10 20:29:17,025 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2022-01-10 20:29:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:29:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-10 20:29:17,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 20:29:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-10 20:29:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:29:17,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:29:17,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:29:17,034 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 20:29:17,226 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 20:29:17,226 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:29:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:29:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1400260072, now seen corresponding path program 1 times [2022-01-10 20:29:17,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:29:17,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744033520] [2022-01-10 20:29:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:29:17,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:29:17,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:29:17,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820978526] [2022-01-10 20:29:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:29:17,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:29:17,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:29:17,267 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 20:29:17,305 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 20:29:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:29:18,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 20:29:18,493 INFO L286 TraceCheckSpWp]: Computing forward predicates...