/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/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:09:47,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:09:47,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:09:47,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:09:47,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:09:47,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:09:47,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:09:47,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:09:47,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:09:47,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:09:47,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:09:47,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:09:47,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:09:47,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:09:47,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:09:47,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:09:47,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:09:47,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:09:47,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:09:47,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:09:47,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:09:47,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:09:47,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:09:47,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:09:47,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:09:47,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:09:47,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:09:47,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:09:47,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:09:47,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:09:47,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:09:47,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:09:47,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:09:47,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:09:47,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:09:47,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:09:47,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:09:47,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:09:47,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:09:47,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:09:47,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:09:47,140 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 20:09:47,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:09:47,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:09:47,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:09:47,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:09:47,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:09:47,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:09:47,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:09:47,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:09:47,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:09:47,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:09:47,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:09:47,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:09:47,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:09:47,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:09:47,179 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:09:47,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:09:47,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:09:47,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:09:47,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:09:47,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:09:47,386 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:09:47,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2022-01-10 20:09:47,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ac2243d/fde92b640ee84a23b0034284414573d3/FLAGdb53bee69 [2022-01-10 20:09:47,809 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:09:47,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2022-01-10 20:09:47,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ac2243d/fde92b640ee84a23b0034284414573d3/FLAGdb53bee69 [2022-01-10 20:09:47,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ac2243d/fde92b640ee84a23b0034284414573d3 [2022-01-10 20:09:47,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:09:47,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:09:47,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:09:47,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:09:47,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:09:47,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:09:47" (1/1) ... [2022-01-10 20:09:47,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498f9c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:47, skipping insertion in model container [2022-01-10 20:09:47,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:09:47" (1/1) ... [2022-01-10 20:09:47,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:09:47,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:09:48,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c[416,429] [2022-01-10 20:09:48,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:09:48,031 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:09:48,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c[416,429] [2022-01-10 20:09:48,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:09:48,077 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:09:48,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48 WrapperNode [2022-01-10 20:09:48,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:09:48,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:09:48,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:09:48,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:09:48,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,110 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2022-01-10 20:09:48,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:09:48,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:09:48,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:09:48,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:09:48,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:09:48,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:09:48,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:09:48,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:09:48,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:09:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:09:48,174 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 20:09:48,176 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 20:09:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:09:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:09:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:09:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:09:48,256 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:09:48,258 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:09:48,421 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:09:48,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:09:48,425 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:09:48,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:09:48 BoogieIcfgContainer [2022-01-10 20:09:48,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:09:48,428 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:09:48,428 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:09:48,429 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:09:48,431 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:09:48" (1/1) ... [2022-01-10 20:09:48,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:09:48 BasicIcfg [2022-01-10 20:09:48,517 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:09:48,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:09:48,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:09:48,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:09:48,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:09:47" (1/4) ... [2022-01-10 20:09:48,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8b4971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:09:48, skipping insertion in model container [2022-01-10 20:09:48,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:09:48" (2/4) ... [2022-01-10 20:09:48,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8b4971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:09:48, skipping insertion in model container [2022-01-10 20:09:48,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:09:48" (3/4) ... [2022-01-10 20:09:48,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8b4971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:09:48, skipping insertion in model container [2022-01-10 20:09:48,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:09:48" (4/4) ... [2022-01-10 20:09:48,532 INFO L111 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.cTransformedIcfg [2022-01-10 20:09:48,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:09:48,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 20:09:48,588 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:09:48,596 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 20:09:48,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 20:09:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:09:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:09:48,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:09:48,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:09:48,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:09:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:09:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1542685942, now seen corresponding path program 1 times [2022-01-10 20:09:48,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:09:48,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052396468] [2022-01-10 20:09:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:09:48,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:09:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:09:48,904 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 20:09:48,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:09:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052396468] [2022-01-10 20:09:48,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052396468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:09:48,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:09:48,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:09:48,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135820444] [2022-01-10 20:09:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:09:48,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:09:48,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:09:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:09:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:09:48,943 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 20:09:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:09:49,018 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-01-10 20:09:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:09:49,020 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 20:09:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:09:49,027 INFO L225 Difference]: With dead ends: 53 [2022-01-10 20:09:49,027 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 20:09:49,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:09:49,033 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:09:49,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:09:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 20:09:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-01-10 20:09:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.1764705882352942) 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 20:09:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-10 20:09:49,066 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 6 [2022-01-10 20:09:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:09:49,066 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-10 20:09:49,067 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 20:09:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-10 20:09:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:09:49,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:09:49,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:09:49,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:09:49,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:09:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:09:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2005764373, now seen corresponding path program 1 times [2022-01-10 20:09:49,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:09:49,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850435114] [2022-01-10 20:09:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:09:49,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:09:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:09:49,280 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 20:09:49,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:09:49,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850435114] [2022-01-10 20:09:49,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850435114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:09:49,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:09:49,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:09:49,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687800600] [2022-01-10 20:09:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:09:49,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:09:49,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:09:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:09:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:09:49,284 INFO L87 Difference]: Start difference. First operand 20 states and 20 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 20:09:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:09:49,368 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-01-10 20:09:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:09:49,369 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 20:09:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:09:49,370 INFO L225 Difference]: With dead ends: 20 [2022-01-10 20:09:49,370 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 20:09:49,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:09:49,375 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:09:49,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:09:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 20:09:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-10 20:09:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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 20:09:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-01-10 20:09:49,383 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2022-01-10 20:09:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:09:49,384 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-01-10 20:09:49,384 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 20:09:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-01-10 20:09:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:09:49,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:09:49,385 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:09:49,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:09:49,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:09:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:09:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1926100388, now seen corresponding path program 1 times [2022-01-10 20:09:49,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:09:49,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916141871] [2022-01-10 20:09:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:09:49,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:09:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:09:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:09:49,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:09:49,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916141871] [2022-01-10 20:09:49,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916141871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:09:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895045081] [2022-01-10 20:09:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:09:49,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:09:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:09:49,490 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 20:09:49,500 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 20:09:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:09:49,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 20:09:49,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:09:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:09:49,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:09:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:09:54,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895045081] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:09:54,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:09:54,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-10 20:09:54,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56822570] [2022-01-10 20:09:54,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:09:54,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:09:54,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:09:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:09:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=63, Unknown=2, NotChecked=0, Total=90 [2022-01-10 20:09:54,217 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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 20:09:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:09:54,276 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-01-10 20:09:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:09:54,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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) Word has length 13 [2022-01-10 20:09:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:09:54,277 INFO L225 Difference]: With dead ends: 18 [2022-01-10 20:09:54,277 INFO L226 Difference]: Without dead ends: 16 [2022-01-10 20:09:54,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=38, Invalid=92, Unknown=2, NotChecked=0, Total=132 [2022-01-10 20:09:54,278 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:09:54,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-01-10 20:09:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-10 20:09:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-01-10 20:09:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:09:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-01-10 20:09:54,282 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-01-10 20:09:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:09:54,282 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-01-10 20:09:54,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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 20:09:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-01-10 20:09:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:09:54,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:09:54,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:09:54,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 20:09:54,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:09:54,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:09:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:09:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash 420399382, now seen corresponding path program 1 times [2022-01-10 20:09:54,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:09:54,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6604382] [2022-01-10 20:09:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:09:54,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:09:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 20:09:54,513 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 20:09:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 20:09:54,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 20:09:54,558 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 20:09:54,559 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 20:09:54,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 20:09:54,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 20:09:54,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:09:54,568 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 20:09:54,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 20:09:54,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:09:54 BasicIcfg [2022-01-10 20:09:54,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 20:09:54,604 INFO L158 Benchmark]: Toolchain (without parser) took 6764.22ms. Allocated memory was 181.4MB in the beginning and 268.4MB in the end (delta: 87.0MB). Free memory was 123.6MB in the beginning and 102.4MB in the end (delta: 21.2MB). Peak memory consumption was 107.6MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,604 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:09:54,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.47ms. Allocated memory was 181.4MB in the beginning and 268.4MB in the end (delta: 87.0MB). Free memory was 123.5MB in the beginning and 241.3MB in the end (delta: -117.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.09ms. Allocated memory is still 268.4MB. Free memory was 240.8MB in the beginning and 239.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,605 INFO L158 Benchmark]: Boogie Preprocessor took 33.81ms. Allocated memory is still 268.4MB. Free memory was 239.8MB in the beginning and 238.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,605 INFO L158 Benchmark]: RCFGBuilder took 281.49ms. Allocated memory is still 268.4MB. Free memory was 238.2MB in the beginning and 227.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,606 INFO L158 Benchmark]: IcfgTransformer took 89.31ms. Allocated memory is still 268.4MB. Free memory was 227.7MB in the beginning and 224.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,606 INFO L158 Benchmark]: TraceAbstraction took 6085.39ms. Allocated memory is still 268.4MB. Free memory was 224.0MB in the beginning and 102.4MB in the end (delta: 121.6MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. [2022-01-10 20:09:54,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.47ms. Allocated memory was 181.4MB in the beginning and 268.4MB in the end (delta: 87.0MB). Free memory was 123.5MB in the beginning and 241.3MB in the end (delta: -117.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.09ms. Allocated memory is still 268.4MB. Free memory was 240.8MB in the beginning and 239.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.81ms. Allocated memory is still 268.4MB. Free memory was 239.8MB in the beginning and 238.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 281.49ms. Allocated memory is still 268.4MB. Free memory was 238.2MB in the beginning and 227.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 89.31ms. Allocated memory is still 268.4MB. Free memory was 227.7MB in the beginning and 224.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 6085.39ms. Allocated memory is still 268.4MB. Free memory was 224.0MB in the beginning and 102.4MB in the end (delta: 121.6MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int i=0, x=0, y=0; [L20] int n=__VERIFIER_nondet_int(); [L21] COND FALSE !(!(n>0)) [L22] i=0 VAL [i=0, n=1, x=0, y=0] [L22] COND TRUE i