/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/gcd_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:14:34,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:14:34,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:14:34,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:14:34,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:14:34,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:14:34,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:14:34,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:14:34,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:14:34,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:14:34,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:14:34,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:14:34,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:14:34,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:14:34,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:14:34,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:14:34,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:14:34,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:14:34,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:14:34,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:14:34,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:14:34,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:14:34,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:14:34,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:14:34,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:14:34,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:14:34,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:14:34,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:14:34,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:14:34,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:14:34,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:14:34,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:14:34,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:14:34,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:14:34,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:14:34,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:14:34,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:14:34,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:14:34,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:14:34,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:14:35,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:14:35,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:14:35,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:14:35,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:14:35,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:14:35,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:14:35,076 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:14:35,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:14:35,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:14:35,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:14:35,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:14:35,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:14:35,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:14:35,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:14:35,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:14:35,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:14:35,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:14:35,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:14:35,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:14:35,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:14:35,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:14:35,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:14:35,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:14:35,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:35,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:14:35,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:14:35,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:14:35,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:14:35,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:14:35,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:14:35,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:14:35,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:14:35,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:14:35,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:14:35,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:14:35,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:14:35,578 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:14:35,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_2.c [2020-10-29 04:14:35,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86a3e0bb1/d75d2cd41f024496b4c424f9f72aa233/FLAGbc71b21d6 [2020-10-29 04:14:36,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:14:36,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/gcd_2.c [2020-10-29 04:14:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86a3e0bb1/d75d2cd41f024496b4c424f9f72aa233/FLAGbc71b21d6 [2020-10-29 04:14:36,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86a3e0bb1/d75d2cd41f024496b4c424f9f72aa233 [2020-10-29 04:14:36,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:14:36,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:14:36,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:36,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:14:36,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:14:36,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:36,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aecc711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36, skipping insertion in model container [2020-10-29 04:14:36,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:36,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:14:36,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:14:36,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:36,930 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:14:36,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:36,970 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:14:36,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36 WrapperNode [2020-10-29 04:14:36,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:36,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:14:36,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:14:36,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:14:36,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:36,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:36,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:36,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:37,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:37,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:37,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... [2020-10-29 04:14:37,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:14:37,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:14:37,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:14:37,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:14:37,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:14:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:14:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:14:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:14:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-10-29 04:14:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:14:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:14:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:14:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:14:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:14:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:14:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:14:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:14:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:14:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:14:37,474 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:14:37,474 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:14:37,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:37 BoogieIcfgContainer [2020-10-29 04:14:37,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:14:37,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:14:37,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:14:37,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:14:37,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:14:36" (1/3) ... [2020-10-29 04:14:37,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b064185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:37, skipping insertion in model container [2020-10-29 04:14:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:36" (2/3) ... [2020-10-29 04:14:37,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b064185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:37, skipping insertion in model container [2020-10-29 04:14:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:37" (3/3) ... [2020-10-29 04:14:37,488 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2020-10-29 04:14:37,502 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:14:37,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:14:37,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:14:37,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:14:37,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:14:37,554 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:14:37,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:14:37,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:14:37,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:14:37,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:14:37,555 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:14:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 04:14:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 04:14:37,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:37,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:37,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:37,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:37,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1472819457, now seen corresponding path program 1 times [2020-10-29 04:14:37,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:37,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500899255] [2020-10-29 04:14:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:14:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-29 04:14:38,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:38,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:14:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:14:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:14:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:38,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:14:38,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:38,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:14:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:14:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:38,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:14:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:38,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500899255] [2020-10-29 04:14:38,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:14:38,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:14:38,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7034059] [2020-10-29 04:14:38,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:14:38,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:14:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:14:38,926 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-29 04:14:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:39,527 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2020-10-29 04:14:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:14:39,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 04:14:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:39,539 INFO L225 Difference]: With dead ends: 64 [2020-10-29 04:14:39,539 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 04:14:39,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:14:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 04:14:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-10-29 04:14:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 04:14:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-29 04:14:39,589 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 21 [2020-10-29 04:14:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:39,590 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-29 04:14:39,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:14:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-29 04:14:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 04:14:39,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:39,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:39,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:14:39,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1730984895, now seen corresponding path program 1 times [2020-10-29 04:14:39,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:39,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415985001] [2020-10-29 04:14:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:14:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 04:14:39,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:14:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:14:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:14:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:39,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:39,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:14:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:14:39,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:14:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:14:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:14:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:39,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415985001] [2020-10-29 04:14:39,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:14:39,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:14:39,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876583740] [2020-10-29 04:14:39,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:14:39,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:39,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:14:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:14:39,899 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-10-29 04:14:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:40,485 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-29 04:14:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:14:40,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 04:14:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:40,487 INFO L225 Difference]: With dead ends: 34 [2020-10-29 04:14:40,487 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 04:14:40,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:14:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 04:14:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 04:14:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 04:14:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-29 04:14:40,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-29 04:14:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:40,498 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-29 04:14:40,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:14:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-29 04:14:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 04:14:40,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:40,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:40,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:14:40,500 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2119722574, now seen corresponding path program 1 times [2020-10-29 04:14:40,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:40,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720076022] [2020-10-29 04:14:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:40,515 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-29 04:14:40,515 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-29 04:14:40,515 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 04:14:40,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:14:40,537 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 04:14:40,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:14:40 BoogieIcfgContainer [2020-10-29 04:14:40,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 04:14:40,541 INFO L168 Benchmark]: Toolchain (without parser) took 3856.28 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 109.2 MB in the beginning and 142.0 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:14:40,542 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:14:40,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.81 ms. Allocated memory is still 151.0 MB. Free memory was 108.6 MB in the beginning and 125.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-10-29 04:14:40,544 INFO L168 Benchmark]: Boogie Preprocessor took 46.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 135.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2020-10-29 04:14:40,545 INFO L168 Benchmark]: RCFGBuilder took 457.36 ms. Allocated memory is still 151.0 MB. Free memory was 135.9 MB in the beginning and 121.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 04:14:40,546 INFO L168 Benchmark]: TraceAbstraction took 3059.36 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.7 MB in the beginning and 142.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2020-10-29 04:14:40,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.81 ms. Allocated memory is still 151.0 MB. Free memory was 108.6 MB in the beginning and 125.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 135.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 457.36 ms. Allocated memory is still 151.0 MB. Free memory was 135.9 MB in the beginning and 121.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3059.36 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.7 MB in the beginning and 142.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L30] signed char x = __VERIFIER_nondet_char(); [L31] signed char y = __VERIFIER_nondet_char(); [L32] signed char g; [L34] CALL, EXPR gcd_test(x, y) [L14] signed char t; [L16] COND TRUE a < (signed char)0 [L16] a = -a [L17] COND FALSE !(b < (signed char)0) [L19] COND TRUE b != (signed char)0 [L20] t = b [L21] b = a % b [L22] a = t [L19] COND FALSE !(b != (signed char)0) [L24] return a; [L34] RET, EXPR gcd_test(x, y) [L34] g = gcd_test(x, y) [L36] COND TRUE y > (signed char)0 [L37] CALL __VERIFIER_assert(y >= g) [L7] COND TRUE !(cond) [L8] CALL reach_error() [L3] __assert_fail("0", "gcd_2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 65 SDslu, 49 SDs, 0 SdLazy, 127 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...