/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:03:24,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:03:24,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:03:24,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:03:24,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:03:24,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:03:24,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:03:24,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:03:24,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:03:24,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:03:24,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:03:24,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:03:24,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:03:24,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:03:24,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:03:24,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:03:24,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:03:24,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:03:24,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:03:24,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:03:24,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:03:24,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:03:24,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:03:24,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:03:24,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:03:24,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:03:24,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:03:24,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:03:24,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:03:24,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:03:24,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:03:24,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:03:24,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:03:24,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:03:24,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:03:24,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:03:24,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:03:24,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:03:24,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:03:24,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:03:24,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:03:24,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:03:24,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:03:24,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:03:24,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:03:24,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:03:24,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:03:24,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:03:24,121 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:03:24,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:03:24,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:03:24,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:03:24,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:03:24,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:03:24,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:03:24,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:03:24,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:03:24,123 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:03:24,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:03:24,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:03:24,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:03:24,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:03:24,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:03:24,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:03:24,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:03:24,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:03:24,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:03:24,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:03:24,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:03:24,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:03:24,126 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:03:24,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:03:24,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:03:24,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:03:24,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:03:24,324 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:03:24,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound2.c [2022-01-10 15:03:24,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463eb9861/fbbd41a92dfe4802a75d8f16fce7077e/FLAG1d151bd76 [2022-01-10 15:03:24,697 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:03:24,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound2.c [2022-01-10 15:03:24,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463eb9861/fbbd41a92dfe4802a75d8f16fce7077e/FLAG1d151bd76 [2022-01-10 15:03:24,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463eb9861/fbbd41a92dfe4802a75d8f16fce7077e [2022-01-10 15:03:24,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:03:24,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:03:24,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:03:24,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:03:24,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:03:24,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e67631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24, skipping insertion in model container [2022-01-10 15:03:24,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:03:24,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:03:24,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound2.c[537,550] [2022-01-10 15:03:24,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:03:24,865 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:03:24,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_unwindbound2.c[537,550] [2022-01-10 15:03:24,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:03:24,886 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:03:24,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24 WrapperNode [2022-01-10 15:03:24,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:03:24,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:03:24,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:03:24,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:03:24,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,907 INFO L137 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2022-01-10 15:03:24,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:03:24,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:03:24,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:03:24,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:03:24,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:03:24,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:03:24,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:03:24,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:03:24,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (1/1) ... [2022-01-10 15:03:24,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:03:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:24,960 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 15:03:24,966 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 15:03:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:03:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:03:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:03:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:03:25,028 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:03:25,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:03:25,205 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:03:25,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:03:25,209 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:03:25,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:25 BoogieIcfgContainer [2022-01-10 15:03:25,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:03:25,211 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:03:25,211 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:03:25,212 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:03:25,213 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:25" (1/1) ... [2022-01-10 15:03:25,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:03:25 BasicIcfg [2022-01-10 15:03:25,311 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:03:25,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:03:25,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:03:25,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:03:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:03:24" (1/4) ... [2022-01-10 15:03:25,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4157ce90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:03:25, skipping insertion in model container [2022-01-10 15:03:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:24" (2/4) ... [2022-01-10 15:03:25,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4157ce90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:03:25, skipping insertion in model container [2022-01-10 15:03:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:25" (3/4) ... [2022-01-10 15:03:25,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4157ce90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:03:25, skipping insertion in model container [2022-01-10 15:03:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:03:25" (4/4) ... [2022-01-10 15:03:25,316 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound2.cTransformedIcfg [2022-01-10 15:03:25,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:03:25,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 15:03:25,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:03:25,374 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 15:03:25,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 15:03:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 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 15:03:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:03:25,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:25,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:25,387 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1154370638, now seen corresponding path program 1 times [2022-01-10 15:03:25,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:25,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262052745] [2022-01-10 15:03:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:25,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:25,494 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 15:03:25,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:03:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262052745] [2022-01-10 15:03:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262052745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:03:25,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:03:25,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:03:25,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565705352] [2022-01-10 15:03:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:03:25,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:03:25,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:03:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:03:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:03:25,517 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 15:03:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:03:25,526 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2022-01-10 15:03:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:03:25,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) Word has length 14 [2022-01-10 15:03:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:03:25,531 INFO L225 Difference]: With dead ends: 49 [2022-01-10 15:03:25,532 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 15:03:25,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:03:25,535 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:03:25,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:03:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 15:03:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-10 15:03:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 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 15:03:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-10 15:03:25,554 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2022-01-10 15:03:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:03:25,555 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-10 15:03:25,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 15:03:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-10 15:03:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:03:25,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:25,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:25,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:03:25,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 549638062, now seen corresponding path program 1 times [2022-01-10 15:03:25,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:25,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338118325] [2022-01-10 15:03:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:25,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:25,581 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:03:25,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067535482] [2022-01-10 15:03:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:25,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:03:25,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:25,583 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 15:03:25,619 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 15:03:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:25,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 15:03:25,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:03:26,228 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 15:03:26,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:03:26,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:03:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338118325] [2022-01-10 15:03:26,230 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:03:26,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067535482] [2022-01-10 15:03:26,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067535482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:03:26,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:03:26,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 15:03:26,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113923718] [2022-01-10 15:03:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:03:26,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 15:03:26,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:03:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 15:03:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 15:03:26,237 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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 15:03:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:03:26,491 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-10 15:03:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 15:03:26,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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) Word has length 14 [2022-01-10 15:03:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:03:26,493 INFO L225 Difference]: With dead ends: 35 [2022-01-10 15:03:26,493 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 15:03:26,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-01-10 15:03:26,495 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 114 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:03:26,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 33 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:03:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 15:03:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-01-10 15:03:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:03:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-10 15:03:26,498 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2022-01-10 15:03:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:03:26,499 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-10 15:03:26,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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 15:03:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-10 15:03:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 15:03:26,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:26,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:26,510 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 15:03:26,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:03:26,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1125656167, now seen corresponding path program 1 times [2022-01-10 15:03:26,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:26,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501003385] [2022-01-10 15:03:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:26,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:26,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:03:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313438943] [2022-01-10 15:03:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:26,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:03:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:26,742 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 15:03:26,747 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 15:03:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:30,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 15:03:30,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:03:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:03:31,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:03:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:03:33,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:03:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501003385] [2022-01-10 15:03:33,663 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:03:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313438943] [2022-01-10 15:03:33,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313438943] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:03:33,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:03:33,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2022-01-10 15:03:33,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659206425] [2022-01-10 15:03:33,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:03:33,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 15:03:33,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:03:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 15:03:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-10 15:03:33,665 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:03:37,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:40,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:42,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:44,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:46,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:48,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:50,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:03:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:03:50,396 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-01-10 15:03:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 15:03:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-10 15:03:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:03:50,399 INFO L225 Difference]: With dead ends: 57 [2022-01-10 15:03:50,399 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 15:03:50,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2022-01-10 15:03:50,401 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 81 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 52 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-01-10 15:03:50,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 47 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 127 Invalid, 7 Unknown, 0 Unchecked, 15.7s Time] [2022-01-10 15:03:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 15:03:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2022-01-10 15:03:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:03:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-10 15:03:50,405 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 20 [2022-01-10 15:03:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:03:50,406 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-10 15:03:50,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:03:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-10 15:03:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 15:03:50,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:50,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:50,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:03:50,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 15:03:50,607 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1124732646, now seen corresponding path program 1 times [2022-01-10 15:03:50,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473517095] [2022-01-10 15:03:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:50,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:50,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:03:50,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710961959] [2022-01-10 15:03:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:50,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:03:50,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:50,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:03:50,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 15:03:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:54,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-10 15:03:54,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:03:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:03:54,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:03:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:03:59,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:03:59,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473517095] [2022-01-10 15:03:59,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:03:59,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710961959] [2022-01-10 15:03:59,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710961959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:03:59,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:03:59,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-01-10 15:03:59,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462269988] [2022-01-10 15:03:59,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:03:59,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 15:03:59,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:03:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 15:03:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-01-10 15:03:59,509 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:02,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:04,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:07,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:09,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:12,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:14,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:16,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:18,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:18,686 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-01-10 15:04:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 15:04:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-10 15:04:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:18,690 INFO L225 Difference]: With dead ends: 55 [2022-01-10 15:04:18,690 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 15:04:18,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-01-10 15:04:18,693 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 30 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:18,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 31 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 156 Invalid, 8 Unknown, 0 Unchecked, 17.7s Time] [2022-01-10 15:04:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 15:04:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 15:04:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 15:04:18,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-01-10 15:04:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:18,695 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 15:04:18,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 15:04:18,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 15:04:18,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 15:04:18,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 15:04:18,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:18,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:18,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 15:04:21,540 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 15:04:21,540 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 15:04:21,540 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-01-10 15:04:21,540 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2022-01-10 15:04:21,540 INFO L858 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L9-6(line 9) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L854 garLoopResultBuilder]: At program point L42-2(lines 36 49) the Hoare annotation is: (let ((.cse3 (<= 0 ~counter~0Int)) (.cse0 (<= |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int| 65535)) (.cse1 (<= 1 |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|)) (.cse2 (<= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 65535))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|) .cse2 (or (not .cse3) (= (mod (+ (mod (* |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 4294967296) (mod (* |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int|) 4294967296)) 4294967296) (mod (* (mod (* 2 |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)))) (and .cse3 .cse0 .cse1 (= |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) (<= 1 |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) (<= ~counter~0Int 0) (= |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) .cse2 (= |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) (= |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|)))) [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L36-3(lines 36 49) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 36 49) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2022-01-10 15:04:21,541 INFO L861 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2022-01-10 15:04:21,541 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int| 65535) (<= 1 |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 65535) (= (mod (+ (mod (* |ULTIMATE.start_ULTIMATE.start_main_~u~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 4294967296) (mod (* |ULTIMATE.start_ULTIMATE.start_main_~v~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int|) 4294967296)) 4294967296) (mod (* (mod (* 2 |ULTIMATE.start_ULTIMATE.start_main_~a~0#1Int|) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L861 garLoopResultBuilder]: At program point L55(lines 20 56) the Hoare annotation is: true [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 48) no Hoare annotation was computed. [2022-01-10 15:04:21,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 15:04:21,544 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 15:04:21,545 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 15:04:21,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:04:21 BasicIcfg [2022-01-10 15:04:21,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 15:04:21,562 INFO L158 Benchmark]: Toolchain (without parser) took 56849.05ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 169.7MB in the beginning and 246.4MB in the end (delta: -76.7MB). Peak memory consumption was 134.5MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,562 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 185.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 15:04:21,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.81ms. Allocated memory is still 218.1MB. Free memory was 169.5MB in the beginning and 194.6MB in the end (delta: -25.1MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.94ms. Allocated memory is still 218.1MB. Free memory was 194.6MB in the beginning and 193.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,563 INFO L158 Benchmark]: Boogie Preprocessor took 23.18ms. Allocated memory is still 218.1MB. Free memory was 193.0MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,563 INFO L158 Benchmark]: RCFGBuilder took 278.59ms. Allocated memory is still 218.1MB. Free memory was 191.4MB in the beginning and 180.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,563 INFO L158 Benchmark]: IcfgTransformer took 100.26ms. Allocated memory is still 218.1MB. Free memory was 180.9MB in the beginning and 175.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,564 INFO L158 Benchmark]: TraceAbstraction took 56249.35ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 175.7MB in the beginning and 246.4MB in the end (delta: -70.8MB). Peak memory consumption was 140.5MB. Max. memory is 8.0GB. [2022-01-10 15:04:21,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 185.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.81ms. Allocated memory is still 218.1MB. Free memory was 169.5MB in the beginning and 194.6MB in the end (delta: -25.1MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.94ms. Allocated memory is still 218.1MB. Free memory was 194.6MB in the beginning and 193.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.18ms. Allocated memory is still 218.1MB. Free memory was 193.0MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 278.59ms. Allocated memory is still 218.1MB. Free memory was 191.4MB in the beginning and 180.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 100.26ms. Allocated memory is still 218.1MB. Free memory was 180.9MB in the beginning and 175.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 56249.35ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 175.7MB in the beginning and 246.4MB in the end (delta: -70.8MB). Peak memory consumption was 140.5MB. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 56.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 251 SdHoareTripleChecker+Valid, 33.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 251 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 33.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 330 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 58 mSDtfsCounter, 330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 19 NumberOfFragments, 126 HoareAnnotationTreeSize, 4 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 879 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 SizeOfPredicates, 45 NumberOfNonLiveVariables, 619 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((~bvule32(1bv32, cond) && ~bvule32(1bv32, a)) && ~bvule32(0bv32, cond)) && ~bvadd16(~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(x), ~zero_extendFrom32To64(u))[31:0]), ~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(v), ~zero_extendFrom32To64(y))[31:0]))[31:0] == ~bvmul32(~zero_extendFrom32To64(~bvmul32(2bv33, ~zero_extendFrom32To33(a))[31:0]), ~zero_extendFrom32To64(b))[31:0]) && ~bvule32(b, 65535bv32)) && ~bvule32(a, 65535bv32)) && ~bvule32(cond, 1bv32) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((~bvule32(1bv32, cond) && ~bvule32(1bv32, a)) && ~bvule32(0bv32, cond)) && ~bvule32(b, 65535bv32)) && ~bvule32(a, 65535bv32)) && ~bvule32(cond, 1bv32)) && (!~bvule32(0bv32, counter) || ~bvadd16(~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(x), ~zero_extendFrom32To64(u))[31:0]), ~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(v), ~zero_extendFrom32To64(y))[31:0]))[31:0] == ~bvmul32(~zero_extendFrom32To64(~bvmul32(2bv33, ~zero_extendFrom32To33(a))[31:0]), ~zero_extendFrom32To64(b))[31:0])) || ((((((((((x == a && v == a) && u == b) && ~bvule32(0bv32, counter)) && ~bvule32(1bv32, a)) && ~bvule32(counter, 0bv32)) && y == b) && ~bvule32(b, 65535bv32)) && ~bvule32(1bv32, b)) && ~bvule32(a, 65535bv32)) && cond == 1bv32) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-10 15:04:21,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...