/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:35:21,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:35:21,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:35:21,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:35:21,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:35:21,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:35:21,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:35:21,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:35:21,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:35:21,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:35:21,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:35:21,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:35:21,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:35:21,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:35:21,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:35:21,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:35:21,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:35:21,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:35:21,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:35:21,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:35:21,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:35:21,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:35:21,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:35:21,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:35:21,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:35:21,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:35:21,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:35:21,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:35:21,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:35:21,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:35:21,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:35:21,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:35:21,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:35:21,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:35:21,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:35:21,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:35:21,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:35:21,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:35:21,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:35:21,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:35:21,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:35:21,580 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 [2020-10-28 09:35:21,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:35:21,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:35:21,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:35:21,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:35:21,610 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:35:21,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:35:21,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:35:21,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:35:21,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:35:21,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:35:21,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:35:21,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:35:21,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:35:21,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:35:21,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:35:21,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:35:21,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:35:21,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:35:21,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:35:21,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:35:21,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:35:21,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:35:21,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:35:21,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:35:21,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:35:21,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:35:21,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:35:21,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:35:21,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:35:21,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:35:21,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:35:22,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:35:22,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:35:22,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:35:22,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:35:22,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-28 09:35:22,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed8d9a60/179d00533f59413f918413fb34cd5768/FLAGdcfe894a6 [2020-10-28 09:35:22,669 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:35:22,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-28 09:35:22,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed8d9a60/179d00533f59413f918413fb34cd5768/FLAGdcfe894a6 [2020-10-28 09:35:23,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ed8d9a60/179d00533f59413f918413fb34cd5768 [2020-10-28 09:35:23,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:35:23,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:35:23,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:23,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:35:23,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:35:23,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b345ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23, skipping insertion in model container [2020-10-28 09:35:23,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:35:23,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:35:23,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:23,262 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:35:23,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:23,299 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:35:23,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23 WrapperNode [2020-10-28 09:35:23,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:23,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:35:23,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:35:23,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:35:23,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (1/1) ... [2020-10-28 09:35:23,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:35:23,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:35:23,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:35:23,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:35:23,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (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 [2020-10-28 09:35:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:35:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:35:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:35:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:35:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-10-28 09:35:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 09:35:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:35:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:35:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:35:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:35:23,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:35:23,749 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 09:35:23,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:23 BoogieIcfgContainer [2020-10-28 09:35:23,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:35:23,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:35:23,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:35:23,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:35:23,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:35:23" (1/3) ... [2020-10-28 09:35:23,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532521d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:23, skipping insertion in model container [2020-10-28 09:35:23,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23" (2/3) ... [2020-10-28 09:35:23,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532521d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:23, skipping insertion in model container [2020-10-28 09:35:23,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:23" (3/3) ... [2020-10-28 09:35:23,762 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3.c [2020-10-28 09:35:23,775 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:35:23,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:35:23,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:35:23,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:35:23,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:35:23,841 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:35:23,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:35:23,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:35:23,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:35:23,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:35:23,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:35:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-28 09:35:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:35:23,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:23,889 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] [2020-10-28 09:35:23,889 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1472819457, now seen corresponding path program 1 times [2020-10-28 09:35:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590104658] [2020-10-28 09:35:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:35:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-28 09:35:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:24,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:35:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:35:24,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:35:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:35:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:24,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:25,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 09:35:25,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 09:35:25,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:25,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:35:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:25,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590104658] [2020-10-28 09:35:25,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:25,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:35:25,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194792448] [2020-10-28 09:35:25,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:35:25,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:25,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:35:25,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:35:25,116 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-28 09:35:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:25,616 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-10-28 09:35:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:35:25,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-28 09:35:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:25,629 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:35:25,630 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 09:35:25,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:35:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 09:35:25,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-10-28 09:35:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 09:35:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-28 09:35:25,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 21 [2020-10-28 09:35:25,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:25,686 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-28 09:35:25,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:35:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-28 09:35:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:35:25,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:25,688 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] [2020-10-28 09:35:25,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:35:25,688 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:25,689 INFO L82 PathProgramCache]: Analyzing trace with hash 886013443, now seen corresponding path program 1 times [2020-10-28 09:35:25,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:25,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961658631] [2020-10-28 09:35:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:35:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-28 09:35:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:35:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:35:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:26,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:35:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 09:35:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 09:35:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:35:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:35:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:26,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961658631] [2020-10-28 09:35:26,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:26,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 09:35:26,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722461483] [2020-10-28 09:35:26,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:35:26,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:35:26,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:35:26,383 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-10-28 09:35:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:26,918 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-28 09:35:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:35:26,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-28 09:35:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:26,920 INFO L225 Difference]: With dead ends: 34 [2020-10-28 09:35:26,920 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 09:35:26,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:35:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 09:35:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 09:35:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 09:35:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-28 09:35:26,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-28 09:35:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:26,929 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-28 09:35:26,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:35:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-28 09:35:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:35:26,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:26,930 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] [2020-10-28 09:35:26,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:35:26,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:26,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1750933486, now seen corresponding path program 1 times [2020-10-28 09:35:26,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:26,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28859873] [2020-10-28 09:35:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:26,944 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:35:26,944 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:35:26,944 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:35:26,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:35:26,964 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:35:26,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:35:26 BoogieIcfgContainer [2020-10-28 09:35:26,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:35:26,968 INFO L168 Benchmark]: Toolchain (without parser) took 3919.81 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 126.7 MB in the beginning and 106.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:35:26,969 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:35:26,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.49 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:35:26,971 INFO L168 Benchmark]: Boogie Preprocessor took 37.65 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:35:26,971 INFO L168 Benchmark]: RCFGBuilder took 412.49 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 101.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:35:26,972 INFO L168 Benchmark]: TraceAbstraction took 3211.27 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 100.6 MB in the beginning and 106.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:35:26,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.49 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.65 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.49 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 101.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3211.27 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 100.6 MB in the beginning and 106.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 39.3 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 FALSE !(a < (signed char)0) [L17] COND TRUE b < (signed char)0 [L17] b = -b [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 x > (signed char)0 [L37] CALL __VERIFIER_assert(x >= g) [L7] COND TRUE !(cond) [L8] CALL reach_error() [L3] __assert_fail("0", "gcd_3.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: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 66 SDslu, 69 SDs, 0 SdLazy, 192 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 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, 1.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3040 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...