/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-zilu/benchmark09_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:12:07,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:12:07,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:12:07,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:12:07,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:12:07,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:12:07,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:12:07,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:12:07,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:12:07,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:12:07,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:12:07,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:12:07,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:12:07,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:12:07,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:12:07,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:12:07,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:12:07,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:12:07,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:12:07,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:12:07,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:12:07,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:12:07,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:12:07,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:12:07,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:12:07,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:12:07,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:12:07,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:12:07,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:12:07,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:12:07,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:12:07,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:12:07,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:12:07,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:12:07,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:12:07,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:12:07,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:12:07,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:12:07,535 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:12:07,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:12:07,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:12:07,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:12:07,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:12:07,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:12:07,844 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:12:07,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2021-05-01 08:12:07,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e2a1fd7/a9bc5ef7a50b4b858d82ffec83064b55/FLAG49c06a752 [2021-05-01 08:12:08,235 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:12:08,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2021-05-01 08:12:08,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e2a1fd7/a9bc5ef7a50b4b858d82ffec83064b55/FLAG49c06a752 [2021-05-01 08:12:08,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e2a1fd7/a9bc5ef7a50b4b858d82ffec83064b55 [2021-05-01 08:12:08,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:12:08,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:12:08,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:12:08,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:12:08,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:12:08,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37435b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08, skipping insertion in model container [2021-05-01 08:12:08,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:12:08,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:12:08,763 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-zilu/benchmark09_conjunctive.i[873,886] [2021-05-01 08:12:08,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:12:08,790 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:12:08,800 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-zilu/benchmark09_conjunctive.i[873,886] [2021-05-01 08:12:08,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:12:08,816 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:12:08,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08 WrapperNode [2021-05-01 08:12:08,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:12:08,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:12:08,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:12:08,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:12:08,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (1/1) ... [2021-05-01 08:12:08,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:12:08,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:12:08,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:12:08,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:12:08,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (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 [2021-05-01 08:12:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:12:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:12:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:12:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:12:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:12:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:12:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 08:12:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 08:12:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:12:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:12:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:12:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:12:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:12:09,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:12:09,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:12:09,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:12:09 BoogieIcfgContainer [2021-05-01 08:12:09,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:12:09,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:12:09,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:12:09,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:12:09,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:12:08" (1/3) ... [2021-05-01 08:12:09,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e01ae43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:12:09, skipping insertion in model container [2021-05-01 08:12:09,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:12:08" (2/3) ... [2021-05-01 08:12:09,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e01ae43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:12:09, skipping insertion in model container [2021-05-01 08:12:09,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:12:09" (3/3) ... [2021-05-01 08:12:09,259 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2021-05-01 08:12:09,279 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:12:09,283 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:12:09,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:12:09,323 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:12:09,323 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:12:09,323 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:12:09,323 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:12:09,323 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:12:09,323 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:12:09,323 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:12:09,323 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:12:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-05-01 08:12:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 08:12:09,346 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:12:09,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:12:09,346 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:12:09,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:12:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2021-05-01 08:12:09,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:12:09,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069281137] [2021-05-01 08:12:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:12:09,405 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:12:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:09,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:09,492 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 08:12:09,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:12:09,511 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-05-01 08:12:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 08:12:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:12:09,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:12:09,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:12:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:09,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:12:09,579 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:12:09,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069281137] [2021-05-01 08:12:09,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2069281137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:12:09,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:12:09,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 08:12:09,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593608661] [2021-05-01 08:12:09,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 08:12:09,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:12:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 08:12:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-01 08:12:09,595 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2021-05-01 08:12:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:12:09,830 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-01 08:12:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 08:12:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 [2021-05-01 08:12:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:12:09,839 INFO L225 Difference]: With dead ends: 42 [2021-05-01 08:12:09,839 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 08:12:09,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-01 08:12:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 08:12:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 08:12:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-05-01 08:12:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-01 08:12:09,902 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-01 08:12:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:12:09,903 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-01 08:12:09,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2021-05-01 08:12:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-01 08:12:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 08:12:09,903 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:12:09,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:12:09,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:12:09,904 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:12:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:12:09,904 INFO L82 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2021-05-01 08:12:09,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:12:09,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385875171] [2021-05-01 08:12:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:12:09,907 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:12:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:09,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:09,962 INFO L142 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-05-01 08:12:09,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:12:09,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:12:09,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:09,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:12:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:12:10,046 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:12:10,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385875171] [2021-05-01 08:12:10,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [385875171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:12:10,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:12:10,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 08:12:10,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636484571] [2021-05-01 08:12:10,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 08:12:10,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:12:10,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 08:12:10,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 08:12:10,048 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2021-05-01 08:12:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:12:10,155 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-01 08:12:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 08:12:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2021-05-01 08:12:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:12:10,156 INFO L225 Difference]: With dead ends: 20 [2021-05-01 08:12:10,157 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 08:12:10,157 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-01 08:12:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 08:12:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 08:12:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-05-01 08:12:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-01 08:12:10,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-01 08:12:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:12:10,162 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-01 08:12:10,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2021-05-01 08:12:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-01 08:12:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 08:12:10,162 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:12:10,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:12:10,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:12:10,163 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:12:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:12:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2021-05-01 08:12:10,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:12:10,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300924389] [2021-05-01 08:12:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:12:10,240 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-05-01 08:12:10,269 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-05-01 08:12:10,269 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 1 v_main_~x~0_10) (not (= v_main_~x~0_10 0)) (<= 1 v_main_~y~0_11)) InVars {main_~x~0=v_main_~x~0_10, main_~y~0=v_main_~y~0_11} OutVars{main_~x~0=v_main_~x~0_10, main_~y~0=v_main_~y~0_11} AuxVars[] AssignedVars[] [2021-05-01 08:12:10,288 WARN L240 tifierPushTermWalker]: treesize reduction 32, result has 70.6 percent of original size [2021-05-01 08:12:10,309 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,317 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 08:12:10,327 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,340 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,349 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:12:10,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,359 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:12:10,361 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,362 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:12:10,369 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,372 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,373 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:12:10,390 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,392 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,399 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,402 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,404 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,426 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:12:10,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,452 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,453 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,457 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,461 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,463 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,467 WARN L245 tifierPushTermWalker]: treesize reduction 32, result has 70.6 percent of original size 77 [2021-05-01 08:12:10,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 08:12:10,498 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:12:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:10,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:10,657 INFO L142 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-05-01 08:12:10,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:12:10,694 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 08:12:10,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 08:12:10,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:12:10,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:12:10,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:12:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:12:10,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:12:10,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:10,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 08:12:10,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 08:12:10,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:12:10,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-05-01 08:12:10,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:12:10,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:12:10,877 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:12:10,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300924389] [2021-05-01 08:12:10,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [300924389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:12:10,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:12:10,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 08:12:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591224463] [2021-05-01 08:12:10,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 08:12:10,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:12:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 08:12:10,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-01 08:12:10,881 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2021-05-01 08:12:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:12:11,089 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-01 08:12:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 08:12:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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 [2021-05-01 08:12:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:12:11,090 INFO L225 Difference]: With dead ends: 15 [2021-05-01 08:12:11,090 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 08:12:11,091 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 264.3ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-01 08:12:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 08:12:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 08:12:11,091 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) [2021-05-01 08:12:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 08:12:11,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-01 08:12:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:12:11,092 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 08:12:11,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2021-05-01 08:12:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 08:12:11,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 08:12:11,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 08:12:11,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 08:12:11,303 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-01 08:12:11,303 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-01 08:12:11,303 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-01 08:12:11,303 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,303 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)|)) [2021-05-01 08:12:11,303 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,303 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L194 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~x~0 main_~y~0) (<= main_~y~0 main_~x~0) (< 0 (+ main_~x~0 1))) [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 19 30) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= main_~x~0 main_~y~0) (<= main_~y~0 main_~x~0) (< 0 (+ main_~x~0 1))) [2021-05-01 08:12:11,304 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) [2021-05-01 08:12:11,304 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 19 30) the Hoare annotation is: true [2021-05-01 08:12:11,304 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 08:12:11,305 INFO L194 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 08:12:11,305 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-01 08:12:11,305 INFO L194 CegarLoopUtils]: At program point L15-2(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 08:12:11,305 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-01 08:12:11,305 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-01 08:12:11,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:12:11 BoogieIcfgContainer [2021-05-01 08:12:11,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:12:11,318 INFO L168 Benchmark]: Toolchain (without parser) took 2691.93 ms. Allocated memory is still 205.5 MB. Free memory was 170.9 MB in the beginning and 80.7 MB in the end (delta: 90.2 MB). Peak memory consumption was 90.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:12:11,318 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 205.5 MB. Free memory was 187.2 MB in the beginning and 187.2 MB in the end (delta: 20.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:12:11,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.87 ms. Allocated memory is still 205.5 MB. Free memory was 170.7 MB in the beginning and 161.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 08:12:11,319 INFO L168 Benchmark]: Boogie Preprocessor took 57.39 ms. Allocated memory is still 205.5 MB. Free memory was 161.3 MB in the beginning and 189.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2021-05-01 08:12:11,319 INFO L168 Benchmark]: RCFGBuilder took 377.39 ms. Allocated memory is still 205.5 MB. Free memory was 189.5 MB in the beginning and 174.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 08:12:11,319 INFO L168 Benchmark]: TraceAbstraction took 2062.30 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 80.7 MB in the end (delta: 93.5 MB). Peak memory consumption was 94.1 MB. Max. memory is 8.0 GB. [2021-05-01 08:12:11,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 205.5 MB. Free memory was 187.2 MB in the beginning and 187.2 MB in the end (delta: 20.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 185.87 ms. Allocated memory is still 205.5 MB. Free memory was 170.7 MB in the beginning and 161.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.39 ms. Allocated memory is still 205.5 MB. Free memory was 161.3 MB in the beginning and 189.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 377.39 ms. Allocated memory is still 205.5 MB. Free memory was 189.5 MB in the beginning and 174.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2062.30 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 80.7 MB in the end (delta: 93.5 MB). Peak memory consumption was 94.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1771.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 591.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 209.7ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 48 SDslu, 59 SDs, 0 SdLazy, 103 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 551.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 39 PreInvPairs, 56 NumberOfFragments, 100 HoareAnnotationTreeSize, 39 FomulaSimplifications, 217 FormulaSimplificationTreeSizeReduction, 42.1ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 391 FormulaSimplificationTreeSizeReductionInter, 157.6ms 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: 23]: Loop Invariant Derived loop invariant: (x <= y && y <= x) && 0 < x + 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: 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...