/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/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:18:35,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:18:35,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:18:35,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:18:35,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:18:35,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:18:35,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:18:35,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:18:35,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:18:35,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:18:35,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:18:35,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:18:35,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:18:35,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:18:35,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:18:35,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:18:35,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:18:35,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:18:35,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:18:35,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:18:35,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:18:35,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:18:35,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:18:35,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:18:35,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:18:35,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:18:35,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:18:35,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:18:35,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:18:35,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:18:35,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:18:35,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:18:35,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:18:35,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:18:35,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:18:35,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:18:35,957 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 20:18:35,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:18:35,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:18:35,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:18:35,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:18:35,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:18:35,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:18:35,990 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:18:35,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:18:35,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:18:35,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:18:35,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:18:35,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:18:35,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:18:35,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:18:35,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:18:35,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:18:35,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:18:35,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:18:35,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:18:35,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:18:35,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:18:35,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:18:35,996 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:18:35,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:18:36,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:18:36,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:18:36,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:18:36,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:18:36,265 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:18:36,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2022-01-10 20:18:36,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f3c32ae/2b9a71ca32cc4ba29bfbf1e1247a9b09/FLAGe56047446 [2022-01-10 20:18:36,704 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:18:36,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2022-01-10 20:18:36,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f3c32ae/2b9a71ca32cc4ba29bfbf1e1247a9b09/FLAGe56047446 [2022-01-10 20:18:36,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f3c32ae/2b9a71ca32cc4ba29bfbf1e1247a9b09 [2022-01-10 20:18:36,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:18:36,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:18:36,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:18:36,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:18:36,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:18:36,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:18:36" (1/1) ... [2022-01-10 20:18:36,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388464d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:36, skipping insertion in model container [2022-01-10 20:18:36,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:18:36" (1/1) ... [2022-01-10 20:18:36,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:18:36,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:18:36,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2022-01-10 20:18:36,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:18:37,006 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:18:37,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2022-01-10 20:18:37,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:18:37,051 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:18:37,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37 WrapperNode [2022-01-10 20:18:37,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:18:37,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:18:37,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:18:37,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:18:37,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,084 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2022-01-10 20:18:37,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:18:37,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:18:37,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:18:37,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:18:37,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:18:37,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:18:37,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:18:37,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:18:37,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:18:37,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:18:37,144 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 20:18:37,174 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 20:18:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:18:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:18:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:18:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:18:37,243 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:18:37,245 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:18:37,406 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:18:37,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:18:37,411 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 20:18:37,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:18:37 BoogieIcfgContainer [2022-01-10 20:18:37,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:18:37,413 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:18:37,413 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:18:37,426 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:18:37,429 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:18:37" (1/1) ... [2022-01-10 20:18:37,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:18:37 BasicIcfg [2022-01-10 20:18:37,506 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:18:37,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:18:37,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:18:37,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:18:37,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:18:36" (1/4) ... [2022-01-10 20:18:37,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8e8d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:18:37, skipping insertion in model container [2022-01-10 20:18:37,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:37" (2/4) ... [2022-01-10 20:18:37,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8e8d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:18:37, skipping insertion in model container [2022-01-10 20:18:37,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:18:37" (3/4) ... [2022-01-10 20:18:37,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8e8d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:18:37, skipping insertion in model container [2022-01-10 20:18:37,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:18:37" (4/4) ... [2022-01-10 20:18:37,529 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.cTransformedIcfg [2022-01-10 20:18:37,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:18:37,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 20:18:37,588 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:18:37,596 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 20:18:37,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 20:18:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 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 20:18:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:18:37,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:18:37,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:18:37,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:18:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:18:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2045167890, now seen corresponding path program 1 times [2022-01-10 20:18:37,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:18:37,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798037628] [2022-01-10 20:18:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:18:37,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:18:37,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:18:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015745592] [2022-01-10 20:18:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:18:37,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:18:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:18:37,803 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 20:18:37,812 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 20:18:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:18:38,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-10 20:18:38,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:18:38,671 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 20:18:38,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:18:38,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:18:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798037628] [2022-01-10 20:18:38,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:18:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015745592] [2022-01-10 20:18:38,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015745592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:18:38,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:18:38,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 20:18:38,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634658766] [2022-01-10 20:18:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:18:38,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:18:38,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:18:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:18:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:18:38,709 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 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 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 20:18:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:18:38,898 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-01-10 20:18:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:18:38,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 12 [2022-01-10 20:18:38,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:18:38,908 INFO L225 Difference]: With dead ends: 44 [2022-01-10 20:18:38,908 INFO L226 Difference]: Without dead ends: 14 [2022-01-10 20:18:38,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:18:38,919 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:18:38,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 119 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:18:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-10 20:18:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-10 20:18:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 20:18:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-01-10 20:18:38,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-01-10 20:18:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:18:38,945 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-01-10 20:18:38,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 20:18:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-01-10 20:18:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:18:38,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:18:38,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:18:38,992 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 20:18:39,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-10 20:18:39,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:18:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:18:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1024274112, now seen corresponding path program 1 times [2022-01-10 20:18:39,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:18:39,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34885880] [2022-01-10 20:18:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:18:39,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:18:39,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:18:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404969418] [2022-01-10 20:18:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:18:39,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:18:39,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:18:39,183 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 20:18:39,211 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 20:18:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:18:39,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-10 20:18:39,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:18:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:18:39,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:19:09,807 WARN L228 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:19:30,994 WARN L228 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:19:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:19:50,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:19:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34885880] [2022-01-10 20:19:50,338 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:19:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404969418] [2022-01-10 20:19:50,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404969418] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:19:50,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:19:50,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 20:19:50,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756239246] [2022-01-10 20:19:50,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:19:50,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 20:19:50,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:19:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 20:19:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=215, Unknown=5, NotChecked=0, Total=306 [2022-01-10 20:19:50,341 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 20:19:53,072 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 []