/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:12:46,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:12:46,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:12:46,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 07:12:46,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:12:46,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:12:46,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:12:46,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:12:46,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:12:46,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:12:46,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:12:46,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:12:46,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:12:46,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:12:46,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:12:46,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:12:46,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:12:46,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:12:46,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:12:46,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:12:46,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:12:46,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:12:46,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:12:46,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:12:46,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:12:46,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:12:46,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:12:46,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:12:46,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:12:46,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:12:46,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:12:46,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:12:46,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:12:46,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:12:46,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:12:46,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:12:46,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:12:46,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:12:46,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:12:46,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:12:46,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:12:46,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:12:46,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:12:46,639 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:12:46,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:12:46,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:12:46,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:12:46,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:12:46,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:12:47,000 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:12:47,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2021-04-16 07:12:47,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873ed635/f5274d08fc7a43ccbe5d35eb59f2c12e/FLAG2a1b9cb1e [2021-04-16 07:12:47,488 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:12:47,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2021-04-16 07:12:47,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873ed635/f5274d08fc7a43ccbe5d35eb59f2c12e/FLAG2a1b9cb1e [2021-04-16 07:12:47,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873ed635/f5274d08fc7a43ccbe5d35eb59f2c12e [2021-04-16 07:12:47,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:12:47,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:12:47,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:12:47,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:12:47,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:12:47,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:12:47" (1/1) ... [2021-04-16 07:12:47,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e891dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:47, skipping insertion in model container [2021-04-16 07:12:47,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:12:47" (1/1) ... [2021-04-16 07:12:47,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:12:47,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:12:48,105 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2021-04-16 07:12:48,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:12:48,133 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:12:48,147 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2021-04-16 07:12:48,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:12:48,174 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:12:48,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48 WrapperNode [2021-04-16 07:12:48,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:12:48,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:12:48,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:12:48,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:12:48,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (1/1) ... [2021-04-16 07:12:48,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:12:48,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:12:48,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:12:48,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:12:48,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (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 [2021-04-16 07:12:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:12:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:12:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:12:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 07:12:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:12:48,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:12:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 07:12:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:12:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 07:12:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 07:12:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:12:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:12:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 07:12:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:12:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:12:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:12:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:12:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:12:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:12:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:12:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:12:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:12:48,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:12:48,760 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-04-16 07:12:48,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:12:48 BoogieIcfgContainer [2021-04-16 07:12:48,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:12:48,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:12:48,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:12:48,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:12:48,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:12:47" (1/3) ... [2021-04-16 07:12:48,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a67d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:12:48, skipping insertion in model container [2021-04-16 07:12:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:12:48" (2/3) ... [2021-04-16 07:12:48,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a67d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:12:48, skipping insertion in model container [2021-04-16 07:12:48,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:12:48" (3/3) ... [2021-04-16 07:12:48,772 INFO L111 eAbstractionObserver]: Analyzing ICFG down.i [2021-04-16 07:12:48,778 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:12:48,783 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:12:48,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:12:48,858 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:12:48,858 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:12:48,858 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:12:48,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:12:48,859 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:12:48,859 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:12:48,859 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:12:48,859 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:12:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-04-16 07:12:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 07:12:48,891 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:12:48,892 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:12:48,893 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:12:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:12:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 1 times [2021-04-16 07:12:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:12:48,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719437500] [2021-04-16 07:12:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:12:48,991 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:12:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:12:49,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:49,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:49,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:49,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:49,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:12:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:12:49,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:12:49,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719437500] [2021-04-16 07:12:49,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:12:49,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 07:12:49,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169479421] [2021-04-16 07:12:49,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 07:12:49,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:12:49,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 07:12:49,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 07:12:49,410 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-04-16 07:12:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:12:49,701 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-04-16 07:12:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 07:12:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2021-04-16 07:12:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:12:49,710 INFO L225 Difference]: With dead ends: 43 [2021-04-16 07:12:49,710 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 07:12:49,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 240.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-04-16 07:12:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 07:12:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-04-16 07:12:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 07:12:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-04-16 07:12:49,756 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-04-16 07:12:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:12:49,756 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-04-16 07:12:49,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-04-16 07:12:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-04-16 07:12:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:12:49,757 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:12:49,758 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:12:49,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:12:49,758 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:12:49,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:12:49,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1458852147, now seen corresponding path program 1 times [2021-04-16 07:12:49,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:12:49,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920672176] [2021-04-16 07:12:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:12:49,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:49,815 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_6 v_main_~n~0_7) InVars {main_~i~0=v_main_~i~0_6, main_~n~0=v_main_~n~0_7} OutVars{main_~i~0=v_main_~i~0_6, main_~n~0=v_main_~n~0_7} AuxVars[] AssignedVars[] [2021-04-16 07:12:49,831 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 85.3 percent of original size [2021-04-16 07:12:49,836 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,857 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:12:49,862 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,865 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 07:12:49,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,880 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,885 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:12:49,891 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,897 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,905 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,909 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,920 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 85.3 percent of original size 50 [2021-04-16 07:12:49,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:49,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 07:12:49,949 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:12:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:12:50,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:50,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:12:50,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:12:50,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:12:50,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:12:50,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:50,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:12:50,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:12:50,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:12:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:12:50,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:12:50,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:12:50,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 07:12:50,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:12:50,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:12:50,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:12:50,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:12:50,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:12:50,388 INFO L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-04-16 07:12:50,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:12:50,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:12:50,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920672176] [2021-04-16 07:12:50,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:12:50,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 07:12:50,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91921411] [2021-04-16 07:12:50,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 07:12:50,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:12:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 07:12:50,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-04-16 07:12:50,448 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-04-16 07:12:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:12:51,108 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-04-16 07:12:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 07:12:51,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 14 [2021-04-16 07:12:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:12:51,109 INFO L225 Difference]: With dead ends: 21 [2021-04-16 07:12:51,109 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 07:12:51,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 695.3ms TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-04-16 07:12:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 07:12:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 07:12:51,112 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) [2021-04-16 07:12:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 07:12:51,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-04-16 07:12:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:12:51,112 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 07:12:51,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-04-16 07:12:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 07:12:51,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 07:12:51,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:12:51,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 07:12:51,677 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-04-16 07:12:51,677 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-04-16 07:12:51,677 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 07:12:51,678 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-04-16 07:12:51,678 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-04-16 07:12:51,679 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-04-16 07:12:51,679 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (and (or (and (= main_~k~0 1) (= main_~i~0 1)) (and (= main_~i~0 main_~k~0) (exists ((v_main_~n~0_10 Int)) (and (< main_~k~0 (+ v_main_~n~0_10 2)) (< 0 v_main_~n~0_10) (<= (+ v_main_~n~0_10 1) main_~k~0))))) (< main_~i~0 (+ main_~n~0 1))) (and (= main_~i~0 0) (= main_~k~0 0))) [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point L29-3(lines 29 32) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (or (and (= main_~k~0 1) (= main_~i~0 1)) (and (= main_~i~0 main_~k~0) (exists ((v_main_~n~0_10 Int)) (and (< main_~k~0 (+ v_main_~n~0_10 2)) (< 0 v_main_~n~0_10) (<= (+ v_main_~n~0_10 1) main_~k~0))))) (< main_~i~0 (+ main_~n~0 1)) (<= main_~n~0 main_~k~0))) [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 24 40) the Hoare annotation is: (<= main_~j~0 0) [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 24 40) the Hoare annotation is: (<= main_~j~0 0) [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point L34-2(lines 34 38) the Hoare annotation is: (or (<= main_~j~0 0) (<= main_~j~0 main_~k~0)) [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point L34-3(lines 34 38) the Hoare annotation is: (<= main_~j~0 0) [2021-04-16 07:12:51,679 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 40) the Hoare annotation is: true [2021-04-16 07:12:51,679 INFO L194 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~k~0) (<= main_~j~0 main_~k~0)) [2021-04-16 07:12:51,680 INFO L194 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~k~0) (<= main_~j~0 main_~k~0)) [2021-04-16 07:12:51,680 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 07:12:51,680 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-04-16 07:12:51,680 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 07:12:51,680 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 07:12:51,681 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 07:12:51,681 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 07:12:51,694 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,705 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,706 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,706 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:12:51 BoogieIcfgContainer [2021-04-16 07:12:51,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:12:51,715 INFO L168 Benchmark]: Toolchain (without parser) took 3802.17 ms. Allocated memory is still 174.1 MB. Free memory was 140.0 MB in the beginning and 91.2 MB in the end (delta: 48.8 MB). Peak memory consumption was 83.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:12:51,716 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 174.1 MB. Free memory is still 156.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:12:51,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.79 ms. Allocated memory is still 174.1 MB. Free memory was 139.8 MB in the beginning and 130.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:12:51,721 INFO L168 Benchmark]: Boogie Preprocessor took 85.02 ms. Allocated memory is still 174.1 MB. Free memory was 130.2 MB in the beginning and 158.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:12:51,722 INFO L168 Benchmark]: RCFGBuilder took 500.69 ms. Allocated memory is still 174.1 MB. Free memory was 158.8 MB in the beginning and 143.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-04-16 07:12:51,722 INFO L168 Benchmark]: TraceAbstraction took 2949.28 ms. Allocated memory is still 174.1 MB. Free memory was 143.0 MB in the beginning and 91.2 MB in the end (delta: 51.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 8.0 GB. [2021-04-16 07:12:51,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 174.1 MB. Free memory is still 156.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.79 ms. Allocated memory is still 174.1 MB. Free memory was 139.8 MB in the beginning and 130.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.02 ms. Allocated memory is still 174.1 MB. Free memory was 130.2 MB in the beginning and 158.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 500.69 ms. Allocated memory is still 174.1 MB. Free memory was 158.8 MB in the beginning and 143.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2949.28 ms. Allocated memory is still 174.1 MB. Free memory was 143.0 MB in the beginning and 91.2 MB in the end (delta: 51.8 MB). Peak memory consumption was 85.9 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_~n~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2274.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 20.9ms, AutomataDifference: 989.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 563.2ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 56 SDslu, 55 SDs, 0 SdLazy, 116 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 935.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 34 PreInvPairs, 56 NumberOfFragments, 178 HoareAnnotationTreeSize, 34 FomulaSimplifications, 213 FormulaSimplificationTreeSizeReduction, 134.4ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 563 FormulaSimplificationTreeSizeReductionInter, 397.0ms 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: 29]: Loop Invariant [2021-04-16 07:12:51,744 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,744 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,745 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,745 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,745 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] [2021-04-16 07:12:51,745 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_10,QUANTIFIED] Derived loop invariant: (((k == 1 && i == 1) || (i == k && (\exists v_main_~n~0_10 : int :: (k < v_main_~n~0_10 + 2 && 0 < v_main_~n~0_10) && v_main_~n~0_10 + 1 <= k))) && i < n + 1) || (i == 0 && k == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: j <= 0 || j <= k - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: j <= 0 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...