/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:34:04,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:34:04,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:34:04,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:34:04,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:34:04,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:34:04,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:34:04,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:34:04,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:34:04,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:34:04,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:34:04,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:34:04,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:34:04,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:34:04,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:34:04,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:34:04,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:34:04,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:34:04,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:34:04,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:34:04,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:34:04,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:34:04,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:34:04,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:34:04,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:34:04,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:34:04,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:34:04,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:34:04,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:34:04,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:34:04,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:34:04,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:34:04,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:34:04,672 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:34:04,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:34:04,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:34:04,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:34:04,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:34:04,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:34:04,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:34:04,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:34:05,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:34:05,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:34:05,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:34:05,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:34:05,079 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:34:05,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2021-02-21 21:34:05,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5b256/867ff310b29a468280456e58768d504e/FLAGeef566f90 [2021-02-21 21:34:05,725 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:34:05,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2021-02-21 21:34:05,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5b256/867ff310b29a468280456e58768d504e/FLAGeef566f90 [2021-02-21 21:34:06,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5b256/867ff310b29a468280456e58768d504e [2021-02-21 21:34:06,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:34:06,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:34:06,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:34:06,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:34:06,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:34:06,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bba1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06, skipping insertion in model container [2021-02-21 21:34:06,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:34:06,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:34:06,356 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-invariants/eq1.c[364,377] [2021-02-21 21:34:06,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:34:06,383 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:34:06,398 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-invariants/eq1.c[364,377] [2021-02-21 21:34:06,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:34:06,419 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:34:06,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06 WrapperNode [2021-02-21 21:34:06,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:34:06,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:34:06,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:34:06,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:34:06,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (1/1) ... [2021-02-21 21:34:06,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:34:06,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:34:06,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:34:06,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:34:06,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (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 [2021-02-21 21:34:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:34:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:34:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:34:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:34:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:34:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:34:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:34:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:34:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:34:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 21:34:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:34:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:34:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:34:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:34:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:34:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:34:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:34:06,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:34:06,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:34:06,973 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:34:06,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:34:06 BoogieIcfgContainer [2021-02-21 21:34:06,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:34:06,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:34:06,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:34:06,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:34:06,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:34:06" (1/3) ... [2021-02-21 21:34:06,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee260ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:34:06, skipping insertion in model container [2021-02-21 21:34:06,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:06" (2/3) ... [2021-02-21 21:34:06,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee260ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:34:06, skipping insertion in model container [2021-02-21 21:34:06,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:34:06" (3/3) ... [2021-02-21 21:34:06,988 INFO L111 eAbstractionObserver]: Analyzing ICFG eq1.c [2021-02-21 21:34:06,993 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:34:06,996 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:34:07,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:34:07,034 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:34:07,034 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:34:07,034 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:34:07,035 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:34:07,035 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:34:07,035 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:34:07,035 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:34:07,035 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:34:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-21 21:34:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-21 21:34:07,057 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:07,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:07,059 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash -713805134, now seen corresponding path program 1 times [2021-02-21 21:34:07,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:07,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735049380] [2021-02-21 21:34:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:07,150 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:07,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:07,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:07,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735049380] [2021-02-21 21:34:07,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:07,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:34:07,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159551772] [2021-02-21 21:34:07,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:34:07,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:07,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:34:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:34:07,416 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2021-02-21 21:34:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:07,586 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-02-21 21:34:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:34:07,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-02-21 21:34:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:07,595 INFO L225 Difference]: With dead ends: 67 [2021-02-21 21:34:07,596 INFO L226 Difference]: Without dead ends: 47 [2021-02-21 21:34:07,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:34:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-21 21:34:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-02-21 21:34:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-21 21:34:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-02-21 21:34:07,653 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 29 [2021-02-21 21:34:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:07,654 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-02-21 21:34:07,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:34:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-02-21 21:34:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 21:34:07,655 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:07,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:07,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:34:07,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:07,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1452537245, now seen corresponding path program 1 times [2021-02-21 21:34:07,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:07,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390723011] [2021-02-21 21:34:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:07,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:07,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:34:07,879 WARN L141 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-02-21 21:34:07,880 WARN L147 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-02-21 21:34:07,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:07,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:07,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:07,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:07,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:07,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390723011] [2021-02-21 21:34:07,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:07,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:34:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559122264] [2021-02-21 21:34:07,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:34:07,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:34:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:34:07,957 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 7 states. [2021-02-21 21:34:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:08,364 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-02-21 21:34:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:34:08,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-02-21 21:34:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:08,368 INFO L225 Difference]: With dead ends: 77 [2021-02-21 21:34:08,368 INFO L226 Difference]: Without dead ends: 71 [2021-02-21 21:34:08,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:34:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-21 21:34:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2021-02-21 21:34:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-21 21:34:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-21 21:34:08,386 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 30 [2021-02-21 21:34:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:08,387 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-21 21:34:08,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:34:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-21 21:34:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 21:34:08,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:08,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:08,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:34:08,389 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 253640520, now seen corresponding path program 1 times [2021-02-21 21:34:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:08,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340249517] [2021-02-21 21:34:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:08,675 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-02-21 21:34:08,688 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:34:08,690 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:08,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:08,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:08,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:08,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:34:08,858 WARN L141 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-02-21 21:34:08,860 WARN L147 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-02-21 21:34:08,867 WARN L141 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-02-21 21:34:08,868 WARN L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-02-21 21:34:08,891 WARN L141 QuantifierPusher]: treesize reduction 23, result has 79.1 percent of original size [2021-02-21 21:34:08,900 WARN L147 QuantifierPusher]: treesize reduction 23, result has 79.1 percent of original size 87 [2021-02-21 21:34:08,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:08,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:08,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:08,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:08,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:08,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:09,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:09,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:09,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340249517] [2021-02-21 21:34:09,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:09,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:34:09,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760897251] [2021-02-21 21:34:09,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:34:09,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:34:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:34:09,031 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 9 states. [2021-02-21 21:34:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:09,346 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-02-21 21:34:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:34:09,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2021-02-21 21:34:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:09,348 INFO L225 Difference]: With dead ends: 82 [2021-02-21 21:34:09,348 INFO L226 Difference]: Without dead ends: 76 [2021-02-21 21:34:09,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:34:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-21 21:34:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2021-02-21 21:34:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:34:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-21 21:34:09,369 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 40 [2021-02-21 21:34:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:09,371 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-21 21:34:09,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:34:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-21 21:34:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 21:34:09,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:09,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:09,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:34:09,374 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:09,375 INFO L82 PathProgramCache]: Analyzing trace with hash 869151688, now seen corresponding path program 1 times [2021-02-21 21:34:09,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:09,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026306309] [2021-02-21 21:34:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:09,801 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-02-21 21:34:09,804 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:34:09,806 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:09,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:09,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:09,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:09,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:34:09,924 WARN L141 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-02-21 21:34:09,925 WARN L147 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-02-21 21:34:09,931 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-21 21:34:09,933 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-21 21:34:09,956 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.5 percent of original size [2021-02-21 21:34:09,960 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.5 percent of original size 111 [2021-02-21 21:34:10,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:10,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:10,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:10,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:10,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:10,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:10,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:10,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:10,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026306309] [2021-02-21 21:34:10,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:10,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:34:10,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498041329] [2021-02-21 21:34:10,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:34:10,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:10,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:34:10,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:34:10,088 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 9 states. [2021-02-21 21:34:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:10,388 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-02-21 21:34:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:34:10,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2021-02-21 21:34:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:10,395 INFO L225 Difference]: With dead ends: 82 [2021-02-21 21:34:10,395 INFO L226 Difference]: Without dead ends: 76 [2021-02-21 21:34:10,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:34:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-21 21:34:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2021-02-21 21:34:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-21 21:34:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-02-21 21:34:10,430 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 40 [2021-02-21 21:34:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:10,432 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-02-21 21:34:10,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:34:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-02-21 21:34:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-21 21:34:10,437 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:10,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:10,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:34:10,439 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1206079085, now seen corresponding path program 1 times [2021-02-21 21:34:10,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:10,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139350549] [2021-02-21 21:34:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:10,691 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-02-21 21:34:11,087 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-02-21 21:34:11,342 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-02-21 21:34:11,343 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:34:11,346 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:11,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:11,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:34:11,505 WARN L141 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-02-21 21:34:11,505 WARN L147 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-02-21 21:34:11,511 WARN L141 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-02-21 21:34:11,512 WARN L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-02-21 21:34:11,524 WARN L141 QuantifierPusher]: treesize reduction 8, result has 92.7 percent of original size [2021-02-21 21:34:11,527 WARN L147 QuantifierPusher]: treesize reduction 8, result has 92.7 percent of original size 102 [2021-02-21 21:34:11,576 WARN L141 QuantifierPusher]: treesize reduction 4, result has 96.5 percent of original size [2021-02-21 21:34:11,586 WARN L147 QuantifierPusher]: treesize reduction 4, result has 96.5 percent of original size 109 [2021-02-21 21:34:11,648 WARN L141 QuantifierPusher]: treesize reduction 8, result has 96.1 percent of original size [2021-02-21 21:34:11,653 WARN L147 QuantifierPusher]: treesize reduction 8, result has 96.1 percent of original size 199 [2021-02-21 21:34:11,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:11,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:11,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:11,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:11,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:11,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139350549] [2021-02-21 21:34:11,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:11,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:34:11,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966608085] [2021-02-21 21:34:11,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:34:11,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:11,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:34:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:34:11,827 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 11 states. [2021-02-21 21:34:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:12,154 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-02-21 21:34:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:34:12,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2021-02-21 21:34:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:12,156 INFO L225 Difference]: With dead ends: 70 [2021-02-21 21:34:12,156 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:34:12,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:34:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:34:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:34:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:34:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:34:12,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-02-21 21:34:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:12,159 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:34:12,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:34:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:34:12,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:34:12,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:34:12,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:34:12,769 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:34:12,770 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:34:12,770 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:34:12,770 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,770 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,770 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,770 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,770 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-6(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-7(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-8(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-9(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L192 CegarLoopUtils]: At program point L3-10(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,771 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:34:12,772 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 11 25) the Hoare annotation is: true [2021-02-21 21:34:12,773 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-21 21:34:12,773 INFO L185 CegarLoopUtils]: At program point L17(lines 17 21) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,773 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,773 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 main_~w~0) [2021-02-21 21:34:12,773 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,773 INFO L192 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: true [2021-02-21 21:34:12,773 INFO L185 CegarLoopUtils]: At program point L17-4(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,774 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 11 25) the Hoare annotation is: true [2021-02-21 21:34:12,774 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 25) the Hoare annotation is: true [2021-02-21 21:34:12,774 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,774 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,774 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,774 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (= main_~x~0 main_~w~0) (<= .cse0 main_~z~0) (<= main_~z~0 .cse0))) [2021-02-21 21:34:12,774 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L20-3(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (= main_~x~0 main_~w~0) (<= .cse0 main_~z~0) (<= main_~z~0 .cse0))) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 1))) (and (<= main_~w~0 .cse0) (<= .cse0 main_~w~0) (= main_~z~0 main_~y~0))) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L20-4(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (= main_~x~0 main_~w~0) (<= .cse0 main_~z~0) (<= main_~z~0 .cse0))) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 1))) (and (<= main_~w~0 .cse0) (<= .cse0 main_~w~0) (= main_~z~0 main_~y~0))) [2021-02-21 21:34:12,775 INFO L185 CegarLoopUtils]: At program point L20-5(line 20) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 main_~w~0) [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L18-4(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 1))) (and (<= main_~w~0 .cse0) (<= .cse0 main_~w~0) (= main_~z~0 main_~y~0))) [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L14-1(line 14) the Hoare annotation is: (= main_~x~0 main_~w~0) [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L18-5(line 18) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,776 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:34:12,776 INFO L185 CegarLoopUtils]: At program point L16-4(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2021-02-21 21:34:12,777 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 21:34:12,777 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-21 21:34:12,777 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:12,777 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:34:12,777 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:12,777 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-21 21:34:12,777 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:12,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:34:12 BoogieIcfgContainer [2021-02-21 21:34:12,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:34:12,796 INFO L168 Benchmark]: Toolchain (without parser) took 6648.63 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 136.6 MB in the beginning and 166.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 130.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:12,797 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory was 132.6 MB in the beginning and 132.4 MB in the end (delta: 212.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:34:12,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.18 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 126.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:12,798 INFO L168 Benchmark]: Boogie Preprocessor took 37.29 ms. Allocated memory is still 160.4 MB. Free memory was 126.0 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:12,799 INFO L168 Benchmark]: RCFGBuilder took 515.57 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 142.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:12,800 INFO L168 Benchmark]: TraceAbstraction took 5817.56 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 142.3 MB in the beginning and 166.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:12,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory was 132.6 MB in the beginning and 132.4 MB in the end (delta: 212.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.18 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 126.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.29 ms. Allocated memory is still 160.4 MB. Free memory was 126.0 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.57 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 142.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5817.56 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 142.3 MB in the beginning and 166.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == w && z == y - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 329 SDslu, 354 SDs, 0 SdLazy, 605 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 83 PreInvPairs, 107 NumberOfFragments, 260 HoareAnnotationTreeSize, 83 FomulaSimplifications, 6198 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 55 FomulaSimplificationsInter, 984 FormulaSimplificationTreeSizeReductionInter, 0.3s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...