/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-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:58:17,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:58:17,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:58:17,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:58:17,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:58:17,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:58:17,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:58:17,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:58:17,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:58:17,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:58:17,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:58:17,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:58:17,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:58:17,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:58:17,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:58:17,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:58:17,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:58:17,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:58:17,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:58:17,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:58:17,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:58:17,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:58:17,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:58:17,539 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:58:17,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:58:17,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:58:17,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:58:17,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:58:17,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:58:17,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:58:17,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:58:18,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:58:18,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:58:18,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:58:18,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:58:18,117 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:58:18,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-02-23 18:58:18,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2607bf5b7/60800cf3d90b4716a7c0b0cff2703437/FLAG5574e88f3 [2021-02-23 18:58:19,131 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:58:19,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-02-23 18:58:19,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2607bf5b7/60800cf3d90b4716a7c0b0cff2703437/FLAG5574e88f3 [2021-02-23 18:58:19,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2607bf5b7/60800cf3d90b4716a7c0b0cff2703437 [2021-02-23 18:58:19,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:58:19,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:58:19,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:58:19,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:58:19,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:58:19,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79977568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19, skipping insertion in model container [2021-02-23 18:58:19,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:58:19,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:58:19,468 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-lit/cggmp2005b.i[895,908] [2021-02-23 18:58:19,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:58:19,503 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:58:19,524 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-lit/cggmp2005b.i[895,908] [2021-02-23 18:58:19,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:58:19,553 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:58:19,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19 WrapperNode [2021-02-23 18:58:19,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:58:19,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:58:19,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:58:19,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:58:19,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (1/1) ... [2021-02-23 18:58:19,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:58:19,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:58:19,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:58:19,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:58:19,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (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 [2021-02-23 18:58:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:58:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:58:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:58:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:58:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:58:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:58:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:58:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:58:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:58:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:58:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:58:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:58:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:58:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:58:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:58:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:58:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:58:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:58:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:58:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:58:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:58:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:58:20,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:58:20,315 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:58:20,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:58:20 BoogieIcfgContainer [2021-02-23 18:58:20,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:58:20,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:58:20,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:58:20,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:58:20,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:58:19" (1/3) ... [2021-02-23 18:58:20,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358eaf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:58:20, skipping insertion in model container [2021-02-23 18:58:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:19" (2/3) ... [2021-02-23 18:58:20,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358eaf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:58:20, skipping insertion in model container [2021-02-23 18:58:20,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:58:20" (3/3) ... [2021-02-23 18:58:20,366 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-02-23 18:58:20,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:58:20,390 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:58:20,429 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:58:20,485 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:58:20,486 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:58:20,486 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:58:20,486 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:58:20,486 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:58:20,486 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:58:20,487 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:58:20,487 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:58:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-23 18:58:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 18:58:20,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:20,550 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] [2021-02-23 18:58:20,550 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1102075345, now seen corresponding path program 1 times [2021-02-23 18:58:20,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:20,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424072582] [2021-02-23 18:58:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:20,717 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:21,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,192 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-23 18:58:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:21,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:21,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424072582] [2021-02-23 18:58:21,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:21,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:58:21,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106295782] [2021-02-23 18:58:21,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:58:21,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:58:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:58:21,334 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-23 18:58:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:21,615 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-02-23 18:58:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:58:21,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 18:58:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:21,637 INFO L225 Difference]: With dead ends: 56 [2021-02-23 18:58:21,637 INFO L226 Difference]: Without dead ends: 29 [2021-02-23 18:58:21,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:58:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-23 18:58:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-23 18:58:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-23 18:58:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-23 18:58:21,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2021-02-23 18:58:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:21,751 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-23 18:58:21,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:58:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-23 18:58:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 18:58:21,753 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:21,754 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] [2021-02-23 18:58:21,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:58:21,754 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:21,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1072522673, now seen corresponding path program 1 times [2021-02-23 18:58:21,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:21,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100482963] [2021-02-23 18:58:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:21,769 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:21,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:21,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:21,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:21,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:21,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100482963] [2021-02-23 18:58:21,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:21,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:58:21,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176410037] [2021-02-23 18:58:21,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:58:21,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:58:21,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:58:21,944 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2021-02-23 18:58:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:22,128 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-02-23 18:58:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:58:22,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-23 18:58:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:22,136 INFO L225 Difference]: With dead ends: 36 [2021-02-23 18:58:22,137 INFO L226 Difference]: Without dead ends: 31 [2021-02-23 18:58:22,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:58:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-23 18:58:22,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-02-23 18:58:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 18:58:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-02-23 18:58:22,188 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 22 [2021-02-23 18:58:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:22,188 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-02-23 18:58:22,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:58:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-02-23 18:58:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 18:58:22,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:22,191 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] [2021-02-23 18:58:22,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:58:22,192 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:22,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2002613161, now seen corresponding path program 1 times [2021-02-23 18:58:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:22,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872273276] [2021-02-23 18:58:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:24,450 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-02-23 18:58:24,481 WARN L141 QuantifierPusher]: treesize reduction 9, result has 91.1 percent of original size [2021-02-23 18:58:24,544 WARN L147 QuantifierPusher]: treesize reduction 9, result has 91.1 percent of original size 92 [2021-02-23 18:58:24,546 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-23 18:58:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:24,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:24,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:24,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:58:24,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:24,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:24,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:24,808 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size [2021-02-23 18:58:24,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:58:24,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-02-23 18:58:24,838 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size 85 [2021-02-23 18:58:24,881 WARN L141 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-02-23 18:58:24,882 WARN L147 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size 9 [2021-02-23 18:58:24,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:24,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:58:24,908 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-23 18:58:24,909 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-23 18:58:24,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872273276] [2021-02-23 18:58:24,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:24,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:58:24,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810737753] [2021-02-23 18:58:24,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:58:24,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:58:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:58:24,915 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2021-02-23 18:58:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:25,214 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-02-23 18:58:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:58:25,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-23 18:58:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:25,217 INFO L225 Difference]: With dead ends: 45 [2021-02-23 18:58:25,217 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 18:58:25,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:58:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 18:58:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-02-23 18:58:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 18:58:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-02-23 18:58:25,232 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2021-02-23 18:58:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:25,233 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-02-23 18:58:25,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:58:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-02-23 18:58:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 18:58:25,236 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:25,236 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] [2021-02-23 18:58:25,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:58:25,237 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:25,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1111162602, now seen corresponding path program 1 times [2021-02-23 18:58:25,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:25,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403262821] [2021-02-23 18:58:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:25,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:58:25,261 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:25,265 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:25,267 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:25,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:25,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:25,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:25,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:25,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403262821] [2021-02-23 18:58:25,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:25,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:58:25,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453204300] [2021-02-23 18:58:25,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:58:25,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:25,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:58:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:58:25,387 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 5 states. [2021-02-23 18:58:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:25,592 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-02-23 18:58:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:58:25,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-23 18:58:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:25,594 INFO L225 Difference]: With dead ends: 44 [2021-02-23 18:58:25,595 INFO L226 Difference]: Without dead ends: 39 [2021-02-23 18:58:25,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:58:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-23 18:58:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-02-23 18:58:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 18:58:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-02-23 18:58:25,609 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2021-02-23 18:58:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:25,610 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-02-23 18:58:25,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:58:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-02-23 18:58:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:58:25,612 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:25,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:58:25,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:58:25,613 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1407956496, now seen corresponding path program 2 times [2021-02-23 18:58:25,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:25,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882103657] [2021-02-23 18:58:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:25,627 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:25,630 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:25,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:58:25,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:58:25,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:58:25,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:25,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:25,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:25,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882103657] [2021-02-23 18:58:25,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:25,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:58:25,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442319658] [2021-02-23 18:58:25,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:58:25,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:58:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:58:25,843 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2021-02-23 18:58:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:26,162 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-02-23 18:58:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:58:26,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-23 18:58:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:26,166 INFO L225 Difference]: With dead ends: 57 [2021-02-23 18:58:26,167 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 18:58:26,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:58:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 18:58:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-02-23 18:58:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-23 18:58:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-02-23 18:58:26,193 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2021-02-23 18:58:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:26,194 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-02-23 18:58:26,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:58:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-02-23 18:58:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:58:26,198 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:26,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:58:26,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:58:26,199 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1443352657, now seen corresponding path program 3 times [2021-02-23 18:58:26,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:26,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196437622] [2021-02-23 18:58:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:26,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:58:26,238 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:26,239 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:26,265 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:58:26,267 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:26,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:26,362 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 18:58:26,363 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 18:58:26,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:58:26,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:58:26,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:26,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:26,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196437622] [2021-02-23 18:58:26,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:26,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:58:26,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642540194] [2021-02-23 18:58:26,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:58:26,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:58:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:58:26,444 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2021-02-23 18:58:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:26,657 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-02-23 18:58:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:58:26,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-23 18:58:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:26,658 INFO L225 Difference]: With dead ends: 51 [2021-02-23 18:58:26,658 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:58:26,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:58:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:58:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:58:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:58:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:58:26,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-02-23 18:58:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:26,661 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:58:26,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:58:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:58:26,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:58:26,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:58:26,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:58:27,234 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:58:27,234 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:58:27,235 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:58:27,235 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:58:27,235 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:58:27,235 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,236 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,236 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:58:27,236 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:58:27,236 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L185 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)|)) [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,237 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,238 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:58:27,238 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 18:58:27,238 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 18:58:27,238 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:27,238 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:27,238 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:27,239 INFO L185 CegarLoopUtils]: At program point L35-2(lines 35 37) the Hoare annotation is: (= main_~k~0 4) [2021-02-23 18:58:27,239 INFO L185 CegarLoopUtils]: At program point L35-3(lines 29 38) the Hoare annotation is: (or (= main_~k~0 4) (and (= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2021-02-23 18:58:27,239 INFO L185 CegarLoopUtils]: At program point L31-2(lines 31 33) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-23 18:58:27,239 INFO L185 CegarLoopUtils]: At program point L31-3(lines 31 33) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-23 18:58:27,240 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 0) [2021-02-23 18:58:27,240 INFO L185 CegarLoopUtils]: At program point L29-2(lines 29 38) the Hoare annotation is: (= main_~k~0 4) [2021-02-23 18:58:27,240 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:58:27,240 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 41) the Hoare annotation is: true [2021-02-23 18:58:27,240 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-23 18:58:27,240 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 41) the Hoare annotation is: true [2021-02-23 18:58:27,241 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: false [2021-02-23 18:58:27,241 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-23 18:58:27,241 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (or (= main_~k~0 4) (and (= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2021-02-23 18:58:27,241 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 41) the Hoare annotation is: true [2021-02-23 18:58:27,241 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 0) [2021-02-23 18:58:27,242 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-23 18:58:27,242 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-23 18:58:27,242 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-23 18:58:27,242 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 18:58:27,242 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-23 18:58:27,242 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:27,243 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:27,243 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:58:27,243 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:27,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:58:27 BoogieIcfgContainer [2021-02-23 18:58:27,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:58:27,276 INFO L168 Benchmark]: Toolchain (without parser) took 8094.66 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 129.3 MB in the beginning and 142.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 99.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:27,276 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:58:27,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.18 ms. Allocated memory is still 152.0 MB. Free memory was 128.1 MB in the beginning and 118.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:27,278 INFO L168 Benchmark]: Boogie Preprocessor took 55.24 ms. Allocated memory is still 152.0 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:27,278 INFO L168 Benchmark]: RCFGBuilder took 714.81 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 133.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:27,279 INFO L168 Benchmark]: TraceAbstraction took 6940.42 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 132.8 MB in the beginning and 142.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:27,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.18 ms. Allocated memory is still 152.0 MB. Free memory was 128.1 MB in the beginning and 118.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.24 ms. Allocated memory is still 152.0 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 714.81 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 133.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6940.42 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 132.8 MB in the beginning and 142.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: k == 4 || (i == 0 && j + 100 <= 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 159 SDslu, 150 SDs, 0 SdLazy, 250 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 79 PreInvPairs, 117 NumberOfFragments, 124 HoareAnnotationTreeSize, 79 FomulaSimplifications, 711 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 37 FomulaSimplificationsInter, 741 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...