/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:26:02,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:26:02,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:26:02,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:26:02,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:26:02,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:26:02,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:26:02,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:26:02,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:26:02,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:26:02,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:26:02,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:26:02,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:26:02,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:26:02,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:26:02,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:26:02,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:26:02,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:26:02,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:26:02,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:26:02,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:26:02,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:26:02,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:26:02,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:26:02,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:26:02,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:26:02,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:26:02,618 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:26:02,619 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:26:02,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:26:02,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:26:02,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:26:02,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:26:02,900 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:26:02,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2021-05-06 11:26:02,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1be80d54/9eea7d78a27244e6a7a899a68c3a0450/FLAG9e8811807 [2021-05-06 11:26:03,301 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:26:03,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2021-05-06 11:26:03,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1be80d54/9eea7d78a27244e6a7a899a68c3a0450/FLAG9e8811807 [2021-05-06 11:26:03,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1be80d54/9eea7d78a27244e6a7a899a68c3a0450 [2021-05-06 11:26:03,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:26:03,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:26:03,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:26:03,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:26:03,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:26:03,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181fa10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03, skipping insertion in model container [2021-05-06 11:26:03,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:26:03,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:26:03,483 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335] [2021-05-06 11:26:03,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:26:03,501 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:26:03,509 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335] [2021-05-06 11:26:03,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:26:03,521 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:26:03,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03 WrapperNode [2021-05-06 11:26:03,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:26:03,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:26:03,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:26:03,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:26:03,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (1/1) ... [2021-05-06 11:26:03,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:26:03,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:26:03,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:26:03,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:26:03,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (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 11:26:03,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:26:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:26:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:26:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:26:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:26:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:26:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:26:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:26:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:26:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:26:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:26:03,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:26:03,898 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:26:03,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:26:03 BoogieIcfgContainer [2021-05-06 11:26:03,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:26:03,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:26:03,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:26:03,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:26:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:26:03" (1/3) ... [2021-05-06 11:26:03,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259f2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:26:03, skipping insertion in model container [2021-05-06 11:26:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:26:03" (2/3) ... [2021-05-06 11:26:03,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259f2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:26:03, skipping insertion in model container [2021-05-06 11:26:03,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:26:03" (3/3) ... [2021-05-06 11:26:03,904 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2021-05-06 11:26:03,907 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:26:03,909 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:26:03,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:26:03,933 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:26:03,933 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:26:03,933 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:26:03,933 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:26:03,933 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:26:03,933 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:26:03,933 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:26:03,933 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:26:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:26:03,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:26:03,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:26:03,947 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:26:03,947 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:26:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:26:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2021-05-06 11:26:03,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:26:03,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798725982] [2021-05-06 11:26:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:26:03,994 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:26:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:26:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:26:04,102 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:26:04,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798725982] [2021-05-06 11:26:04,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1798725982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:26:04,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:26:04,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:26:04,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701500154] [2021-05-06 11:26:04,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:26:04,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:26:04,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:26:04,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:26:04,127 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:26:04,200 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-06 11:26:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:26:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 11:26:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:26:04,209 INFO L225 Difference]: With dead ends: 29 [2021-05-06 11:26:04,209 INFO L226 Difference]: Without dead ends: 12 [2021-05-06 11:26:04,211 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:26:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-06 11:26:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-06 11:26:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-06 11:26:04,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-06 11:26:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:26:04,248 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-06 11:26:04,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-06 11:26:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:26:04,248 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:26:04,248 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:26:04,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:26:04,249 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:26:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:26:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2021-05-06 11:26:04,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:26:04,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409062386] [2021-05-06 11:26:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:26:04,252 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:26:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:26:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:26:04,357 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:26:04,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409062386] [2021-05-06 11:26:04,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [409062386] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:26:04,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:26:04,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:26:04,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596995323] [2021-05-06 11:26:04,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:26:04,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:26:04,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:26:04,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:26:04,360 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:26:04,412 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-06 11:26:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:26:04,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 11:26:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:26:04,413 INFO L225 Difference]: With dead ends: 18 [2021-05-06 11:26:04,413 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 11:26:04,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:26:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 11:26:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 11:26:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 11:26:04,418 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-06 11:26:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:26:04,418 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 11:26:04,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 11:26:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 11:26:04,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:26:04,419 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:26:04,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:26:04,419 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:26:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:26:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2021-05-06 11:26:04,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:26:04,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730052773] [2021-05-06 11:26:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:26:04,447 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 94.2 percent of original size [2021-05-06 11:26:04,450 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:26:04,527 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-06 11:26:04,566 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 94.2 percent of original size 49 [2021-05-06 11:26:04,610 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:26:04,619 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:26:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:26:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:26:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:26:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:26:11,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:26:13,397 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:26:13,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730052773] [2021-05-06 11:26:13,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [730052773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:26:13,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:26:13,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 11:26:13,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960949360] [2021-05-06 11:26:13,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 11:26:13,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:26:13,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 11:26:13,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=61, Unknown=4, NotChecked=0, Total=90 [2021-05-06 11:26:13,399 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:21,887 WARN L205 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2021-05-06 11:26:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:26:24,170 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-05-06 11:26:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:26:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 11:26:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:26:24,171 INFO L225 Difference]: With dead ends: 13 [2021-05-06 11:26:24,171 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:26:24,172 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 15304.7ms TimeCoverageRelationStatistics Valid=49, Invalid=129, Unknown=4, NotChecked=0, Total=182 [2021-05-06 11:26:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:26:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:26:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 11:26:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:26:24,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-06 11:26:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:26:24,172 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:26:24,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:26:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:26:24,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:26:24,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:26:24,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:26:32,744 WARN L205 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-05-06 11:26:50,040 WARN L205 SmtUtils]: Spent 17.23 s on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2021-05-06 11:26:50,143 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-06 11:26:50,143 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-06 11:26:50,143 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:26:50,143 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2021-05-06 11:26:50,144 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 12 20) the Hoare annotation is: true [2021-05-06 11:26:50,144 INFO L194 CegarLoopUtils]: At program point L15-2(lines 15 17) the Hoare annotation is: (exists ((v_main_~x~0_9 Int)) (and (or (let ((.cse0 (* v_main_~x~0_9 (- 1)))) (let ((.cse1 (div (+ main_~x~0 .cse0) (- 2)))) (and (< 0 (mod v_main_~x~0_9 4294967296)) (= (mod (+ main_~x~0 v_main_~x~0_9) (- 2)) 0) (let ((.cse3 (div (+ (* v_main_~x~0_9 4294967293) (- 1)) (- 2))) (.cse2 (div (+ (* v_main_~x~0_9 (- 4294967293)) (- 1)) 2))) (or (< (div (+ .cse0 (* .cse1 (- 1)) .cse2 1) (- 2147483648)) (+ (div (+ v_main_~x~0_9 (* .cse3 (- 1)) 1) 2147483648) 2)) (< .cse3 (+ .cse2 2)))) (< 0 .cse1)))) (= v_main_~x~0_9 main_~x~0)) (<= 268435440 v_main_~x~0_9) (<= v_main_~x~0_9 268435440))) [2021-05-06 11:26:50,144 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 12 20) the Hoare annotation is: true [2021-05-06 11:26:50,144 INFO L194 CegarLoopUtils]: At program point L15-3(lines 15 17) the Hoare annotation is: (and (exists ((v_main_~x~0_9 Int)) (and (or (let ((.cse0 (* v_main_~x~0_9 (- 1)))) (let ((.cse1 (div (+ main_~x~0 .cse0 2) (- 2)))) (and (< 0 (mod v_main_~x~0_9 4294967296)) (= (mod (+ main_~x~0 v_main_~x~0_9) (- 2)) 0) (let ((.cse3 (div (+ (* v_main_~x~0_9 4294967293) (- 1)) (- 2))) (.cse2 (div (+ (* v_main_~x~0_9 (- 4294967293)) (- 1)) 2))) (or (< (div (+ .cse0 (* .cse1 (- 1)) .cse2 1) (- 2147483648)) (+ (div (+ v_main_~x~0_9 (* .cse3 (- 1)) 1) 2147483648) 2)) (< .cse3 (+ .cse2 2)))) (< 0 .cse1)))) (= v_main_~x~0_9 (+ main_~x~0 2))) (<= 268435440 v_main_~x~0_9) (<= v_main_~x~0_9 268435440))) (exists ((v_main_~x~0_9 Int)) (and (or (let ((.cse4 (* v_main_~x~0_9 (- 1)))) (let ((.cse5 (div (+ main_~x~0 .cse4) (- 2)))) (and (< 0 (mod v_main_~x~0_9 4294967296)) (= (mod (+ main_~x~0 v_main_~x~0_9) (- 2)) 0) (let ((.cse7 (div (+ (* v_main_~x~0_9 4294967293) (- 1)) (- 2))) (.cse6 (div (+ (* v_main_~x~0_9 (- 4294967293)) (- 1)) 2))) (or (< (div (+ .cse4 (* .cse5 (- 1)) .cse6 1) (- 2147483648)) (+ (div (+ v_main_~x~0_9 (* .cse7 (- 1)) 1) 2147483648) 2)) (< .cse7 (+ .cse6 2)))) (< 0 .cse5)))) (= v_main_~x~0_9 main_~x~0)) (<= 268435440 v_main_~x~0_9) (<= v_main_~x~0_9 268435440)))) [2021-05-06 11:26:50,144 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-06 11:26:50,144 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-06 11:26:50,144 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:26:50,144 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:26:50,144 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-06 11:26:50,145 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:26:50,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:26:50 BoogieIcfgContainer [2021-05-06 11:26:50,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:26:50,162 INFO L168 Benchmark]: Toolchain (without parser) took 46831.15 ms. Allocated memory is still 181.4 MB. Free memory was 146.0 MB in the beginning and 77.4 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:26:50,162 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 181.4 MB. Free memory is still 163.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:26:50,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.00 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 136.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:26:50,163 INFO L168 Benchmark]: Boogie Preprocessor took 53.84 ms. Allocated memory is still 181.4 MB. Free memory was 136.6 MB in the beginning and 165.1 MB in the end (delta: -28.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2021-05-06 11:26:50,163 INFO L168 Benchmark]: RCFGBuilder took 322.07 ms. Allocated memory is still 181.4 MB. Free memory was 165.1 MB in the beginning and 151.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:26:50,163 INFO L168 Benchmark]: TraceAbstraction took 46261.24 ms. Allocated memory is still 181.4 MB. Free memory was 151.5 MB in the beginning and 77.4 MB in the end (delta: 74.1 MB). Peak memory consumption was 74.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:26:50,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 181.4 MB. Free memory is still 163.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 189.00 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 136.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.84 ms. Allocated memory is still 181.4 MB. Free memory was 136.6 MB in the beginning and 165.1 MB in the end (delta: -28.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 322.07 ms. Allocated memory is still 181.4 MB. Free memory was 165.1 MB in the beginning and 151.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 46261.24 ms. Allocated memory is still 181.4 MB. Free memory was 151.5 MB in the beginning and 77.4 MB in the end (delta: 74.1 MB). Peak memory consumption was 74.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20241.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.8ms, AutomataDifference: 10928.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 25969.1ms, InitialAbstractionConstructionTime: 5.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 21 SDslu, 36 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4029.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 15396.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 30 PreInvPairs, 40 NumberOfFragments, 338 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 30.1ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 538 FormulaSimplificationTreeSizeReductionInter, 25930.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2021-05-06 11:26:50,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] [2021-05-06 11:26:50,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_9,QUANTIFIED] Derived loop invariant: (\exists v_main_~x~0_9 : int :: (((((0 < v_main_~x~0_9 % 4294967296 && (x + v_main_~x~0_9) % -2 == 0) && ((v_main_~x~0_9 * -1 + (x + v_main_~x~0_9 * -1) / -2 * -1 + (v_main_~x~0_9 * -4294967293 + -1) / 2 + 1) / -2147483648 < (v_main_~x~0_9 + (v_main_~x~0_9 * 4294967293 + -1) / -2 * -1 + 1) / 2147483648 + 2 || (v_main_~x~0_9 * 4294967293 + -1) / -2 < (v_main_~x~0_9 * -4294967293 + -1) / 2 + 2)) && 0 < (x + v_main_~x~0_9 * -1) / -2) || v_main_~x~0_9 == x) && 268435440 <= v_main_~x~0_9) && v_main_~x~0_9 <= 268435440) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...