/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:48:14,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:48:14,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:48:14,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:48:14,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:48:14,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:48:14,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:48:14,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:48:14,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:48:14,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:48:14,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:48:14,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:48:14,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:48:14,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:48:14,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:48:14,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:48:14,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:48:14,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:48:14,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:48:14,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:48:14,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:48:14,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:48:14,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:48:14,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:48:14,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:48:14,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:48:14,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:48:14,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:48:14,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:48:14,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:48:14,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:48:14,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:48:14,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:48:14,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:48:14,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:48:14,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:48:14,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:48:14,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:48:14,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:48:14,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:48:14,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:48:14,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:48:14,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:48:14,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:48:14,366 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:48:14,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:48:14,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:48:14,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:48:14,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:48:14,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:48:14,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:48:14,367 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:48:14,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:48:14,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:48:14,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:48:14,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:48:14,651 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:48:14,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-08-22 19:48:14,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82e4fff2/7a6731be34a24c4b8ace943159bb51e0/FLAG47d4d6b4a [2020-08-22 19:48:15,163 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:48:15,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-08-22 19:48:15,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82e4fff2/7a6731be34a24c4b8ace943159bb51e0/FLAG47d4d6b4a [2020-08-22 19:48:15,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82e4fff2/7a6731be34a24c4b8ace943159bb51e0 [2020-08-22 19:48:15,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:48:15,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:48:15,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:15,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:48:15,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:48:15,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45aac576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15, skipping insertion in model container [2020-08-22 19:48:15,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:48:15,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:48:15,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:15,806 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:48:15,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:15,836 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:48:15,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15 WrapperNode [2020-08-22 19:48:15,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:15,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:48:15,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:48:15,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:48:15,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (1/1) ... [2020-08-22 19:48:15,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:48:15,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:48:15,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:48:15,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:48:15,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (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 [2020-08-22 19:48:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:48:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:48:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:48:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:48:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:48:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:48:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:48:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:48:16,263 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:48:16,263 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:48:16,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:16 BoogieIcfgContainer [2020-08-22 19:48:16,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:48:16,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:48:16,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:48:16,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:48:16,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:48:15" (1/3) ... [2020-08-22 19:48:16,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc6cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:16, skipping insertion in model container [2020-08-22 19:48:16,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:15" (2/3) ... [2020-08-22 19:48:16,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc6cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:16, skipping insertion in model container [2020-08-22 19:48:16,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:16" (3/3) ... [2020-08-22 19:48:16,294 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-08-22 19:48:16,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:48:16,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:48:16,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:48:16,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:48:16,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:48:16,348 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:48:16,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:48:16,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:48:16,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:48:16,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:48:16,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:48:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-22 19:48:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 19:48:16,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:16,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:16,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times [2020-08-22 19:48:16,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:16,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478845634] [2020-08-22 19:48:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:16,434 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:16,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478845634] [2020-08-22 19:48:16,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:16,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 19:48:16,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710520859] [2020-08-22 19:48:16,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 19:48:16,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 19:48:16,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:48:16,531 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-08-22 19:48:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:16,558 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-22 19:48:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 19:48:16,559 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-08-22 19:48:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:16,568 INFO L225 Difference]: With dead ends: 41 [2020-08-22 19:48:16,568 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 19:48:16,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:48:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 19:48:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 19:48:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 19:48:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-22 19:48:16,613 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-08-22 19:48:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:16,614 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-22 19:48:16,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 19:48:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-22 19:48:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 19:48:16,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:16,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:16,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:48:16,616 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times [2020-08-22 19:48:16,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:16,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681439594] [2020-08-22 19:48:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:16,620 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:16,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681439594] [2020-08-22 19:48:16,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:16,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:48:16,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263753221] [2020-08-22 19:48:16,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:48:16,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:48:16,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:48:16,674 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-08-22 19:48:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:16,728 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-08-22 19:48:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:48:16,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-22 19:48:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:16,730 INFO L225 Difference]: With dead ends: 28 [2020-08-22 19:48:16,730 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 19:48:16,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:48:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 19:48:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-22 19:48:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 19:48:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-08-22 19:48:16,740 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-08-22 19:48:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:16,741 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-08-22 19:48:16,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:48:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-08-22 19:48:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 19:48:16,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:16,742 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] [2020-08-22 19:48:16,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:48:16,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:16,743 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times [2020-08-22 19:48:16,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:16,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280105933] [2020-08-22 19:48:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:16,773 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:16,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280105933] [2020-08-22 19:48:16,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:16,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:48:16,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924813755] [2020-08-22 19:48:16,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:48:16,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:48:16,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:48:16,922 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-08-22 19:48:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:17,071 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-22 19:48:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:48:17,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-08-22 19:48:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:17,073 INFO L225 Difference]: With dead ends: 33 [2020-08-22 19:48:17,073 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 19:48:17,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:48:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 19:48:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-22 19:48:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 19:48:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-22 19:48:17,082 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-08-22 19:48:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:17,082 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-22 19:48:17,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:48:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-22 19:48:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 19:48:17,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:17,083 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] [2020-08-22 19:48:17,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:48:17,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash -590441495, now seen corresponding path program 2 times [2020-08-22 19:48:17,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:17,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422235327] [2020-08-22 19:48:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:17,090 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:17,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422235327] [2020-08-22 19:48:17,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:17,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:48:17,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605172160] [2020-08-22 19:48:17,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:48:17,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:48:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:48:17,257 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2020-08-22 19:48:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:17,499 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-08-22 19:48:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 19:48:17,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-22 19:48:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:17,502 INFO L225 Difference]: With dead ends: 38 [2020-08-22 19:48:17,502 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 19:48:17,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-08-22 19:48:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 19:48:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-22 19:48:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 19:48:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-22 19:48:17,518 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-08-22 19:48:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:17,518 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-22 19:48:17,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:48:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-22 19:48:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 19:48:17,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:17,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:17,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:48:17,522 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:17,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:17,523 INFO L82 PathProgramCache]: Analyzing trace with hash -934609001, now seen corresponding path program 3 times [2020-08-22 19:48:17,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:17,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364305944] [2020-08-22 19:48:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:17,529 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:17,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364305944] [2020-08-22 19:48:17,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:17,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:48:17,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467091708] [2020-08-22 19:48:17,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:48:17,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:17,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:48:17,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:48:17,724 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2020-08-22 19:48:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:17,985 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-22 19:48:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 19:48:17,986 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-08-22 19:48:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:17,987 INFO L225 Difference]: With dead ends: 43 [2020-08-22 19:48:17,987 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 19:48:17,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:48:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 19:48:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-08-22 19:48:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 19:48:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-22 19:48:17,996 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-08-22 19:48:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:17,997 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-22 19:48:17,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:48:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-22 19:48:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:48:17,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:17,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:17,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:48:17,999 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1774497961, now seen corresponding path program 4 times [2020-08-22 19:48:17,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:18,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12822426] [2020-08-22 19:48:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:18,004 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:18,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12822426] [2020-08-22 19:48:18,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:18,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 19:48:18,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923913778] [2020-08-22 19:48:18,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 19:48:18,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 19:48:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-08-22 19:48:18,262 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 18 states. [2020-08-22 19:48:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:18,608 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-08-22 19:48:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:48:18,608 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-08-22 19:48:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:18,610 INFO L225 Difference]: With dead ends: 48 [2020-08-22 19:48:18,610 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 19:48:18,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:48:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 19:48:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-08-22 19:48:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 19:48:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-08-22 19:48:18,618 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-08-22 19:48:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:18,619 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-08-22 19:48:18,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 19:48:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-08-22 19:48:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:48:18,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:18,620 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:18,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:48:18,621 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:18,621 INFO L82 PathProgramCache]: Analyzing trace with hash -194454825, now seen corresponding path program 5 times [2020-08-22 19:48:18,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:18,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338660994] [2020-08-22 19:48:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:18,625 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:18,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338660994] [2020-08-22 19:48:18,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:18,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-08-22 19:48:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971275754] [2020-08-22 19:48:18,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 19:48:18,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:18,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 19:48:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-22 19:48:18,959 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 21 states. [2020-08-22 19:48:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:19,487 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-08-22 19:48:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:48:19,488 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-08-22 19:48:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:19,490 INFO L225 Difference]: With dead ends: 53 [2020-08-22 19:48:19,490 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 19:48:19,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:48:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 19:48:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-22 19:48:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 19:48:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-08-22 19:48:19,505 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-08-22 19:48:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:19,506 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-08-22 19:48:19,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 19:48:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-08-22 19:48:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 19:48:19,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:19,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:19,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:48:19,511 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:19,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487849, now seen corresponding path program 6 times [2020-08-22 19:48:19,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:19,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863806359] [2020-08-22 19:48:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:19,520 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:19,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:19,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863806359] [2020-08-22 19:48:19,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:19,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-08-22 19:48:19,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015873216] [2020-08-22 19:48:19,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 19:48:19,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 19:48:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:48:19,885 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2020-08-22 19:48:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:20,527 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-08-22 19:48:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 19:48:20,528 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-08-22 19:48:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:20,529 INFO L225 Difference]: With dead ends: 58 [2020-08-22 19:48:20,529 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 19:48:20,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 19:48:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 19:48:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-08-22 19:48:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 19:48:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-22 19:48:20,538 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-08-22 19:48:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:20,539 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-22 19:48:20,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 19:48:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-22 19:48:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 19:48:20,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:20,540 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:20,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:48:20,540 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:20,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1046324759, now seen corresponding path program 7 times [2020-08-22 19:48:20,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:20,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676048911] [2020-08-22 19:48:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:20,545 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:20,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676048911] [2020-08-22 19:48:20,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:20,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-08-22 19:48:20,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804817830] [2020-08-22 19:48:20,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 19:48:20,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 19:48:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-08-22 19:48:20,992 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2020-08-22 19:48:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:21,742 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-08-22 19:48:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 19:48:21,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-08-22 19:48:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:21,743 INFO L225 Difference]: With dead ends: 63 [2020-08-22 19:48:21,744 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 19:48:21,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 19:48:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 19:48:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-08-22 19:48:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 19:48:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-08-22 19:48:21,753 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-08-22 19:48:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:21,753 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-08-22 19:48:21,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 19:48:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-08-22 19:48:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 19:48:21,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:21,755 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:21,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:48:21,755 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:21,756 INFO L82 PathProgramCache]: Analyzing trace with hash 232135209, now seen corresponding path program 8 times [2020-08-22 19:48:21,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:21,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613158565] [2020-08-22 19:48:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:21,761 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:22,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613158565] [2020-08-22 19:48:22,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:22,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-08-22 19:48:22,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733756531] [2020-08-22 19:48:22,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-22 19:48:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:22,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-22 19:48:22,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-08-22 19:48:22,276 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2020-08-22 19:48:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:23,261 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-08-22 19:48:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 19:48:23,262 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-08-22 19:48:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:23,263 INFO L225 Difference]: With dead ends: 68 [2020-08-22 19:48:23,263 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 19:48:23,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 19:48:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 19:48:23,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-08-22 19:48:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 19:48:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-08-22 19:48:23,281 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-08-22 19:48:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:23,281 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-08-22 19:48:23,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-22 19:48:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-08-22 19:48:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 19:48:23,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:23,283 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:23,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:48:23,283 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash 977101143, now seen corresponding path program 9 times [2020-08-22 19:48:23,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:23,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340040706] [2020-08-22 19:48:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:23,288 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:23,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340040706] [2020-08-22 19:48:23,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:23,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-08-22 19:48:23,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617263445] [2020-08-22 19:48:23,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-22 19:48:23,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:23,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-22 19:48:23,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:48:23,967 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 33 states. [2020-08-22 19:48:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:25,193 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-08-22 19:48:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 19:48:25,194 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-08-22 19:48:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:25,196 INFO L225 Difference]: With dead ends: 73 [2020-08-22 19:48:25,197 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 19:48:25,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=2998, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 19:48:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 19:48:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-08-22 19:48:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 19:48:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-08-22 19:48:25,207 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2020-08-22 19:48:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:25,207 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-08-22 19:48:25,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-22 19:48:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-08-22 19:48:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 19:48:25,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:25,208 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:25,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:48:25,209 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 751396585, now seen corresponding path program 10 times [2020-08-22 19:48:25,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:25,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228125878] [2020-08-22 19:48:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:25,212 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:25,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228125878] [2020-08-22 19:48:25,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:25,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-08-22 19:48:25,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505378904] [2020-08-22 19:48:25,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-22 19:48:25,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-22 19:48:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 19:48:25,969 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 36 states. [2020-08-22 19:48:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:27,438 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-08-22 19:48:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-22 19:48:27,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-08-22 19:48:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:27,439 INFO L225 Difference]: With dead ends: 68 [2020-08-22 19:48:27,439 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:48:27,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=221, Invalid=3685, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 19:48:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:48:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:48:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:48:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:48:27,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-08-22 19:48:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:27,442 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:48:27,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-22 19:48:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:48:27,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:48:27,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 19:48:27,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:48:27,809 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-08-22 19:48:27,921 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-08-22 19:48:28,042 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,043 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,043 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,043 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,043 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,044 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:28,044 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:28,044 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:28,044 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 19:48:28,044 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 19:48:28,044 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:28,045 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 24) the Hoare annotation is: true [2020-08-22 19:48:28,045 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse1 (* 6 main_~y~0))) (let ((.cse0 (<= (+ main_~x~0 65) .cse1))) (or (<= (+ main_~x~0 51) main_~y~0) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (and .cse0 (<= (+ main_~x~0 86) (* 8 main_~y~0))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) .cse0) (<= (+ main_~x~0 60) (* 4 main_~y~0)) (<= (+ main_~x~0 71) .cse1)))) [2020-08-22 19:48:28,046 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-08-22 19:48:28,046 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-08-22 19:48:28,046 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 19:48:28,046 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 24) the Hoare annotation is: true [2020-08-22 19:48:28,046 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2020-08-22 19:48:28,046 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-22 19:48:28,047 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (<= (+ main_~x~0 95) (* 10 main_~y~0)) (<= (+ main_~x~0 50) main_~y~0) (<= (+ main_~x~0 53) (* 3 main_~y~0)) (<= (+ main_~x~0 71) (* 7 main_~y~0)) (<= (+ main_~x~0 78) (* 8 main_~y~0)) (<= (+ main_~x~0 60) (* 5 main_~y~0))) [2020-08-22 19:48:28,047 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 95))) (and (<= .cse0 (* 10 main_~y~0)) (<= .cse0 (* 10 |main_#t~post1|)))) (let ((.cse1 (+ main_~x~0 50))) (and (<= .cse1 main_~y~0) (<= .cse1 |main_#t~post1|))) (let ((.cse2 (+ main_~x~0 60))) (and (<= .cse2 (* 5 |main_#t~post1|)) (<= .cse2 (* 5 main_~y~0)))) (let ((.cse3 (+ main_~x~0 53))) (and (<= .cse3 (* 3 |main_#t~post1|)) (<= .cse3 (* 3 main_~y~0)))) (let ((.cse4 (+ main_~x~0 71))) (and (<= .cse4 (* 7 |main_#t~post1|)) (<= .cse4 (* 7 main_~y~0)))) (let ((.cse5 (+ main_~x~0 78))) (and (<= .cse5 (* 8 |main_#t~post1|)) (<= .cse5 (* 8 main_~y~0))))) [2020-08-22 19:48:28,047 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse2 (+ main_~x~0 51)) (.cse1 (+ main_~x~0 71)) (.cse0 (+ main_~x~0 95))) (or (and (<= .cse0 (* 9 main_~y~0)) (<= (+ main_~x~0 86) (* 9 |main_#t~post1|))) (and (<= .cse1 (* 7 |main_#t~post1|)) (<= (+ main_~x~0 78) (* 7 main_~y~0))) (and (<= .cse2 main_~y~0) (<= (+ main_~x~0 50) |main_#t~post1|)) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse2 (* 2 |main_#t~post1|))) (and (<= (+ main_~x~0 56) (* 4 |main_#t~post1|)) (<= (+ main_~x~0 60) (* 4 main_~y~0))) (and (<= .cse1 (* 6 main_~y~0)) (<= (+ main_~x~0 65) (* 6 |main_#t~post1|))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= .cse0 (* 10 |main_#t~post1|))))) [2020-08-22 19:48:28,047 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-08-22 19:48:28,048 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (<= (+ main_~x~0 51) main_~y~0) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 60) (* 4 main_~y~0)) (<= (+ main_~x~0 86) (* 8 main_~y~0)) (<= (+ main_~x~0 71) (* 6 main_~y~0))) [2020-08-22 19:48:28,048 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-08-22 19:48:28,048 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= 11 main_~y~0) (<= (+ main_~x~0 105) (* 10 main_~y~0))) [2020-08-22 19:48:28,048 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 19:48:28,048 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-08-22 19:48:28,048 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:28,049 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:28,049 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:28,049 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:48:28,049 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:28,049 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:28,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:48:28 BoogieIcfgContainer [2020-08-22 19:48:28,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:48:28,084 INFO L168 Benchmark]: Toolchain (without parser) took 12470.63 ms. Allocated memory was 147.3 MB in the beginning and 321.9 MB in the end (delta: 174.6 MB). Free memory was 104.1 MB in the beginning and 170.4 MB in the end (delta: -66.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,085 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.97 ms. Allocated memory is still 147.3 MB. Free memory was 103.9 MB in the beginning and 94.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,087 INFO L168 Benchmark]: Boogie Preprocessor took 110.17 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,087 INFO L168 Benchmark]: RCFGBuilder took 325.03 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,096 INFO L168 Benchmark]: TraceAbstraction took 11801.10 ms. Allocated memory was 203.9 MB in the beginning and 321.9 MB in the end (delta: 118.0 MB). Free memory was 168.8 MB in the beginning and 170.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:28,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.97 ms. Allocated memory is still 147.3 MB. Free memory was 103.9 MB in the beginning and 94.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.17 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.03 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 169.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11801.10 ms. Allocated memory was 203.9 MB in the beginning and 321.9 MB in the end (delta: 118.0 MB). Free memory was 168.8 MB in the beginning and 170.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((x + 51 <= y || x + 50 <= 0) || x + 56 <= 3 * y) || x + 105 <= 10 * y) || x + 60 <= 4 * y) || x + 86 <= 8 * y) || x + 71 <= 6 * y - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 202 SDslu, 2195 SDs, 0 SdLazy, 5535 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=11, 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, 12 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 95 PreInvPairs, 179 NumberOfFragments, 399 HoareAnnotationTreeSize, 95 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 316 FormulaSimplificationTreeSizeReductionInter, 0.4s 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...