/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 02:45:00,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 02:45:00,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 02:45:00,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 02:45:00,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 02:45:00,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 02:45:00,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 02:45:00,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 02:45:00,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 02:45:00,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 02:45:00,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 02:45:00,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 02:45:00,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 02:45:00,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 02:45:00,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 02:45:00,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 02:45:00,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 02:45:00,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 02:45:00,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 02:45:00,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 02:45:00,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 02:45:00,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 02:45:00,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 02:45:00,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 02:45:00,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 02:45:00,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 02:45:00,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 02:45:00,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 02:45:00,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 02:45:00,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 02:45:00,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 02:45:00,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 02:45:00,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 02:45:00,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 02:45:00,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 02:45:00,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 02:45:00,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 02:45:00,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 02:45:00,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 02:45:00,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 02:45:00,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 02:45:00,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 02:45:00,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 02:45:00,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 02:45:00,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 02:45:00,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 02:45:00,736 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 02:45:00,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 02:45:00,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 02:45:00,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 02:45:00,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 02:45:00,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 02:45:00,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 02:45:00,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 02:45:00,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 02:45:00,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 02:45:00,739 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 02:45:00,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 02:45:00,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 02:45:00,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 02:45:00,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 02:45:00,972 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 02:45:00,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound5.c [2021-05-06 02:45:01,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0509a6252/b03ac238ca244e36b83d19bae5f5325d/FLAG4dced7ee9 [2021-05-06 02:45:01,368 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 02:45:01,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound5.c [2021-05-06 02:45:01,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0509a6252/b03ac238ca244e36b83d19bae5f5325d/FLAG4dced7ee9 [2021-05-06 02:45:01,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0509a6252/b03ac238ca244e36b83d19bae5f5325d [2021-05-06 02:45:01,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 02:45:01,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 02:45:01,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 02:45:01,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 02:45:01,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 02:45:01,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40da3213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01, skipping insertion in model container [2021-05-06 02:45:01,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 02:45:01,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 02:45:01,513 WARN L224 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/geo1-u_valuebound5.c[563,576] [2021-05-06 02:45:01,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:45:01,532 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 02:45:01,581 WARN L224 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/geo1-u_valuebound5.c[563,576] [2021-05-06 02:45:01,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:45:01,604 INFO L208 MainTranslator]: Completed translation [2021-05-06 02:45:01,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01 WrapperNode [2021-05-06 02:45:01,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 02:45:01,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 02:45:01,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 02:45:01,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 02:45:01,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... [2021-05-06 02:45:01,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 02:45:01,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 02:45:01,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 02:45:01,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 02:45:01,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 02:45:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-06 02:45:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 02:45:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 02:45:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 02:45:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 02:45:01,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 02:45:01,942 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 02:45:01,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:45:01 BoogieIcfgContainer [2021-05-06 02:45:01,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 02:45:01,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 02:45:01,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 02:45:01,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 02:45:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 02:45:01" (1/3) ... [2021-05-06 02:45:01,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777c6f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:45:01, skipping insertion in model container [2021-05-06 02:45:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:45:01" (2/3) ... [2021-05-06 02:45:01,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777c6f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:45:01, skipping insertion in model container [2021-05-06 02:45:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:45:01" (3/3) ... [2021-05-06 02:45:01,947 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound5.c [2021-05-06 02:45:01,950 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 02:45:01,952 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 02:45:01,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 02:45:01,992 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 02:45:01,992 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 02:45:01,992 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 02:45:01,992 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 02:45:01,992 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 02:45:02,008 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 02:45:02,008 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 02:45:02,009 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 02:45:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 02:45:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 02:45:02,026 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:45:02,027 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:45:02,027 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:45:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:45:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 1 times [2021-05-06 02:45:02,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:45:02,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327292887] [2021-05-06 02:45:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:45:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:45:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 02:45:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:45:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 02:45:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:45:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 02:45:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:45:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 02:45:02,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:45:02,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327292887] [2021-05-06 02:45:02,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327292887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:45:02,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:45:02,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 02:45:02,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744000014] [2021-05-06 02:45:02,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 02:45:02,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:45:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 02:45:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:45:02,333 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:45:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:45:02,415 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-05-06 02:45:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 02:45:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 02:45:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:45:02,421 INFO L225 Difference]: With dead ends: 53 [2021-05-06 02:45:02,421 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 02:45:02,423 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:45:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 02:45:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-06 02:45:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 02:45:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-06 02:45:02,455 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2021-05-06 02:45:02,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:45:02,455 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-06 02:45:02,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 02:45:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-06 02:45:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 02:45:02,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:45:02,457 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:45:02,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 02:45:02,457 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:45:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:45:02,458 INFO L82 PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 1 times [2021-05-06 02:45:02,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:45:02,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542326716] [2021-05-06 02:45:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:45:02,487 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:45:02,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646926604] [2021-05-06 02:45:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:45:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:45:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 02:45:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:45:02,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:45:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 02:45:02,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:45:02,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542326716] [2021-05-06 02:45:02,815 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:45:02,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646926604] [2021-05-06 02:45:02,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646926604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:45:02,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:45:02,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 02:45:02,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015954958] [2021-05-06 02:45:02,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 02:45:02,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:45:02,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 02:45:02,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 02:45:02,819 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 02:45:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:45:02,862 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-05-06 02:45:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 02:45:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 02:45:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:45:02,865 INFO L225 Difference]: With dead ends: 35 [2021-05-06 02:45:02,865 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 02:45:02,865 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 02:45:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 02:45:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-05-06 02:45:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 02:45:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-05-06 02:45:02,878 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-05-06 02:45:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:45:02,881 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-05-06 02:45:02,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 02:45:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-05-06 02:45:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-06 02:45:02,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:45:02,883 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:45:03,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 02:45:03,097 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:45:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:45:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 1 times [2021-05-06 02:45:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:45:03,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111104919] [2021-05-06 02:45:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:45:03,122 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:45:03,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276413543] [2021-05-06 02:45:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:45:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 02:45:03,227 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 02:45:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 02:45:03,241 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 02:45:03,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 02:45:03,263 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 02:45:03,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:45:03,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 02:45:03 BoogieIcfgContainer [2021-05-06 02:45:03,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 02:45:03,499 INFO L168 Benchmark]: Toolchain (without parser) took 2112.11 ms. Allocated memory is still 186.6 MB. Free memory was 152.0 MB in the beginning and 132.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-05-06 02:45:03,500 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 02:45:03,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.92 ms. Allocated memory is still 186.6 MB. Free memory was 151.8 MB in the beginning and 169.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 02:45:03,500 INFO L168 Benchmark]: Boogie Preprocessor took 29.58 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 167.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 02:45:03,500 INFO L168 Benchmark]: RCFGBuilder took 307.23 ms. Allocated memory is still 186.6 MB. Free memory was 167.8 MB in the beginning and 153.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 02:45:03,500 INFO L168 Benchmark]: TraceAbstraction took 1555.29 ms. Allocated memory is still 186.6 MB. Free memory was 153.1 MB in the beginning and 132.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-05-06 02:45:03,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 214.92 ms. Allocated memory is still 186.6 MB. Free memory was 151.8 MB in the beginning and 169.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.58 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 167.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 307.23 ms. Allocated memory is still 186.6 MB. Free memory was 167.8 MB in the beginning and 153.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1555.29 ms. Allocated memory is still 186.6 MB. Free memory was 153.1 MB in the beginning and 132.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L26] CALL assume_abort_if_not(z>=0 && z<=5) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L26] RET assume_abort_if_not(z>=0 && z<=5) VAL [z=0] [L27] k = __VERIFIER_nondet_unsigned_int() [L28] CALL assume_abort_if_not(k>=0 && k<=5) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(k>=0 && k<=5) VAL [k=0, z=0] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=0, x=1, y=0, z=0] [L34] COND TRUE 1 VAL [c=1, k=0, x=1, y=0, z=0] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=0, x=1, y=0, z=0] [L37] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L46] x = x * (z - 1) VAL [c=1, k=0, x=4294967295, y=0, z=0] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1486.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.4ms, AutomataDifference: 146.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 50 SDtfs, 23 SDslu, 68 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.3ms SsaConstructionTime, 128.5ms SatisfiabilityAnalysisTime, 246.3ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 1 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 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 proved your program to be incorrect! Received shutdown request...