/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:39:19,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:39:19,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:39:19,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:39:19,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:39:19,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:39:19,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:39:19,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:39:20,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:39:20,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:39:20,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:39:20,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:39:20,019 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:39:20,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:39:20,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:39:20,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:39:20,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:39:20,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:39:20,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:39:20,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:39:20,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:39:20,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:39:20,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:39:20,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:39:20,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:39:20,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:39:20,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:39:20,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:39:20,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:39:20,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:39:20,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:39:20,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:39:20,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:39:20,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:39:20,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:39:20,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:39:20,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:39:20,496 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:39:20,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-11-06 22:39:20,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177098dc7/c605905331e74ac981ec473a8024b46e/FLAG2f5697e78 [2020-11-06 22:39:21,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:39:21,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-11-06 22:39:21,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177098dc7/c605905331e74ac981ec473a8024b46e/FLAG2f5697e78 [2020-11-06 22:39:21,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177098dc7/c605905331e74ac981ec473a8024b46e [2020-11-06 22:39:21,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:39:21,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:39:21,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:39:21,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:39:21,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:39:21,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:21" (1/1) ... [2020-11-06 22:39:21,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8a2910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:21, skipping insertion in model container [2020-11-06 22:39:21,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:21" (1/1) ... [2020-11-06 22:39:21,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:39:21,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:39:22,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:39:22,306 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:39:22,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:39:22,437 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:39:22,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22 WrapperNode [2020-11-06 22:39:22,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:39:22,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:39:22,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:39:22,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:39:22,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2020-11-06 22:39:22,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:39:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:39:22,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:39:22,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:39:22,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (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 [2020-11-06 22:39:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:39:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:39:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:39:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-06 22:39:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:39:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-06 22:39:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:39:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:39:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:39:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:39:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:39:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:39:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:39:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:39:24,187 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:39:24,188 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:39:24,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:24 BoogieIcfgContainer [2020-11-06 22:39:24,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:39:24,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:39:24,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:39:24,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:39:24,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:39:21" (1/3) ... [2020-11-06 22:39:24,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568f2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:24, skipping insertion in model container [2020-11-06 22:39:24,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (2/3) ... [2020-11-06 22:39:24,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568f2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:24, skipping insertion in model container [2020-11-06 22:39:24,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:24" (3/3) ... [2020-11-06 22:39:24,200 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-11-06 22:39:24,216 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:39:24,221 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:39:24,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:39:24,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:39:24,268 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:39:24,268 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:39:24,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:39:24,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:39:24,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:39:24,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:39:24,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:39:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states. [2020-11-06 22:39:24,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-06 22:39:24,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:24,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:24,307 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1024523006, now seen corresponding path program 1 times [2020-11-06 22:39:24,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:24,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529924148] [2020-11-06 22:39:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:24,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529924148] [2020-11-06 22:39:24,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:39:24,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:39:24,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569540845] [2020-11-06 22:39:24,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:39:24,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:24,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:39:24,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:39:24,870 INFO L87 Difference]: Start difference. First operand 219 states. Second operand 4 states. [2020-11-06 22:39:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:26,764 INFO L93 Difference]: Finished difference Result 601 states and 1027 transitions. [2020-11-06 22:39:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:39:26,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-11-06 22:39:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:26,781 INFO L225 Difference]: With dead ends: 601 [2020-11-06 22:39:26,781 INFO L226 Difference]: Without dead ends: 303 [2020-11-06 22:39:26,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:39:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-11-06 22:39:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2020-11-06 22:39:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-11-06 22:39:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2020-11-06 22:39:26,883 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 41 [2020-11-06 22:39:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:26,884 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2020-11-06 22:39:26,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:39:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2020-11-06 22:39:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-06 22:39:26,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:26,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-11-06 22:39:26,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:39:26,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash 664559079, now seen corresponding path program 1 times [2020-11-06 22:39:26,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:26,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646856600] [2020-11-06 22:39:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:27,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646856600] [2020-11-06 22:39:27,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:39:27,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:39:27,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604427219] [2020-11-06 22:39:27,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:39:27,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:27,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:39:27,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:39:27,316 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand 7 states. [2020-11-06 22:39:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:29,463 INFO L93 Difference]: Finished difference Result 910 states and 1353 transitions. [2020-11-06 22:39:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:39:29,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-11-06 22:39:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:29,479 INFO L225 Difference]: With dead ends: 910 [2020-11-06 22:39:29,479 INFO L226 Difference]: Without dead ends: 617 [2020-11-06 22:39:29,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:39:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-11-06 22:39:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 597. [2020-11-06 22:39:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-11-06 22:39:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 783 transitions. [2020-11-06 22:39:29,558 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 783 transitions. Word has length 115 [2020-11-06 22:39:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:29,559 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 783 transitions. [2020-11-06 22:39:29,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:39:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 783 transitions. [2020-11-06 22:39:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-06 22:39:29,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:29,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:29,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:39:29,570 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash -391062595, now seen corresponding path program 1 times [2020-11-06 22:39:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135802877] [2020-11-06 22:39:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:29,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135802877] [2020-11-06 22:39:29,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112161801] [2020-11-06 22:39:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:39:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:39:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:30,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:39:30,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-11-06 22:39:30,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187069520] [2020-11-06 22:39:30,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:39:30,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:39:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:39:30,330 INFO L87 Difference]: Start difference. First operand 597 states and 783 transitions. Second operand 3 states. [2020-11-06 22:39:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:31,229 INFO L93 Difference]: Finished difference Result 1037 states and 1408 transitions. [2020-11-06 22:39:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:39:31,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-11-06 22:39:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:31,243 INFO L225 Difference]: With dead ends: 1037 [2020-11-06 22:39:31,243 INFO L226 Difference]: Without dead ends: 1034 [2020-11-06 22:39:31,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:39:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-11-06 22:39:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 746. [2020-11-06 22:39:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-11-06 22:39:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1023 transitions. [2020-11-06 22:39:31,306 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1023 transitions. Word has length 120 [2020-11-06 22:39:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:31,307 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1023 transitions. [2020-11-06 22:39:31,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:39:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1023 transitions. [2020-11-06 22:39:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-11-06 22:39:31,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:31,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:31,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:39:31,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1079541831, now seen corresponding path program 1 times [2020-11-06 22:39:31,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:31,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659608471] [2020-11-06 22:39:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:31,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:32,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659608471] [2020-11-06 22:39:32,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:39:32,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:39:32,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327969628] [2020-11-06 22:39:32,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:39:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:39:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:39:32,038 INFO L87 Difference]: Start difference. First operand 746 states and 1023 transitions. Second operand 8 states. [2020-11-06 22:39:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:34,209 INFO L93 Difference]: Finished difference Result 2108 states and 2999 transitions. [2020-11-06 22:39:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:39:34,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-11-06 22:39:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:34,226 INFO L225 Difference]: With dead ends: 2108 [2020-11-06 22:39:34,227 INFO L226 Difference]: Without dead ends: 1368 [2020-11-06 22:39:34,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:39:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-11-06 22:39:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1193. [2020-11-06 22:39:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-11-06 22:39:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1581 transitions. [2020-11-06 22:39:34,317 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1581 transitions. Word has length 163 [2020-11-06 22:39:34,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:34,319 INFO L481 AbstractCegarLoop]: Abstraction has 1193 states and 1581 transitions. [2020-11-06 22:39:34,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:39:34,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1581 transitions. [2020-11-06 22:39:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-06 22:39:34,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:34,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:34,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:39:34,324 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:34,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1227038450, now seen corresponding path program 1 times [2020-11-06 22:39:34,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:34,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917722116] [2020-11-06 22:39:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-11-06 22:39:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:39:34,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917722116] [2020-11-06 22:39:34,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083213072] [2020-11-06 22:39:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:34,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:39:34,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:39:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:35,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:39:35,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-11-06 22:39:35,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197125390] [2020-11-06 22:39:35,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:39:35,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:39:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:39:35,083 INFO L87 Difference]: Start difference. First operand 1193 states and 1581 transitions. Second operand 11 states. [2020-11-06 22:39:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:39,198 INFO L93 Difference]: Finished difference Result 3004 states and 4048 transitions. [2020-11-06 22:39:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:39:39,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 202 [2020-11-06 22:39:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:39,209 INFO L225 Difference]: With dead ends: 3004 [2020-11-06 22:39:39,209 INFO L226 Difference]: Without dead ends: 1223 [2020-11-06 22:39:39,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-11-06 22:39:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-11-06 22:39:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1046. [2020-11-06 22:39:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-11-06 22:39:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1305 transitions. [2020-11-06 22:39:39,271 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1305 transitions. Word has length 202 [2020-11-06 22:39:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:39,272 INFO L481 AbstractCegarLoop]: Abstraction has 1046 states and 1305 transitions. [2020-11-06 22:39:39,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:39:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1305 transitions. [2020-11-06 22:39:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-11-06 22:39:39,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:39,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:39,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:39,490 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -32580812, now seen corresponding path program 1 times [2020-11-06 22:39:39,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:39,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106472220] [2020-11-06 22:39:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-11-06 22:39:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:39:39,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106472220] [2020-11-06 22:39:39,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266337834] [2020-11-06 22:39:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:40,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:39:40,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:39:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:39:40,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:39:40,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:39:40,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565553859] [2020-11-06 22:39:40,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:39:40,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:40,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:39:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:39:40,198 INFO L87 Difference]: Start difference. First operand 1046 states and 1305 transitions. Second operand 10 states. [2020-11-06 22:39:43,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:43,265 INFO L93 Difference]: Finished difference Result 2986 states and 3766 transitions. [2020-11-06 22:39:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 22:39:43,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2020-11-06 22:39:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:43,277 INFO L225 Difference]: With dead ends: 2986 [2020-11-06 22:39:43,277 INFO L226 Difference]: Without dead ends: 1946 [2020-11-06 22:39:43,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-11-06 22:39:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2020-11-06 22:39:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1491. [2020-11-06 22:39:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-11-06 22:39:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1808 transitions. [2020-11-06 22:39:43,339 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1808 transitions. Word has length 209 [2020-11-06 22:39:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:43,340 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 1808 transitions. [2020-11-06 22:39:43,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:39:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1808 transitions. [2020-11-06 22:39:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-11-06 22:39:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:43,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:43,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:43,562 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1456651186, now seen corresponding path program 1 times [2020-11-06 22:39:43,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:43,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021484163] [2020-11-06 22:39:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:43,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-06 22:39:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 66 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-06 22:39:44,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021484163] [2020-11-06 22:39:44,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343543885] [2020-11-06 22:39:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-06 22:39:44,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:39:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-06 22:39:44,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:39:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-11-06 22:39:44,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338339922] [2020-11-06 22:39:44,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:39:44,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:44,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:39:44,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:39:44,504 INFO L87 Difference]: Start difference. First operand 1491 states and 1808 transitions. Second operand 5 states. [2020-11-06 22:39:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:39:45,526 INFO L93 Difference]: Finished difference Result 3143 states and 3801 transitions. [2020-11-06 22:39:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:39:45,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-11-06 22:39:45,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:39:45,538 INFO L225 Difference]: With dead ends: 3143 [2020-11-06 22:39:45,539 INFO L226 Difference]: Without dead ends: 1658 [2020-11-06 22:39:45,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:39:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-11-06 22:39:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1640. [2020-11-06 22:39:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-11-06 22:39:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 1969 transitions. [2020-11-06 22:39:45,601 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 1969 transitions. Word has length 216 [2020-11-06 22:39:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:39:45,601 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 1969 transitions. [2020-11-06 22:39:45,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:39:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 1969 transitions. [2020-11-06 22:39:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-11-06 22:39:45,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:39:45,611 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:39:45,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:45,825 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:39:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:39:45,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1131167893, now seen corresponding path program 1 times [2020-11-06 22:39:45,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:39:45,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480973016] [2020-11-06 22:39:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:39:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:39:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:39:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-06 22:39:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-06 22:39:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 177 proven. 167 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:39:46,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480973016] [2020-11-06 22:39:46,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984835078] [2020-11-06 22:39:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:39:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:39:46,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-06 22:39:46,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:39:46,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:39:46,751 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:46,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:46,807 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,849 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:46,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:46,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:46,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,944 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,958 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:39:46,967 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:39:49,342 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 101 DAG size of output: 37 [2020-11-06 22:39:49,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:39:50,289 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-06 22:39:50,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:39:50,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:39:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-06 22:39:50,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:39:50,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-11-06 22:39:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262170510] [2020-11-06 22:39:50,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-06 22:39:50,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:39:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-06 22:39:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:39:50,483 INFO L87 Difference]: Start difference. First operand 1640 states and 1969 transitions. Second operand 16 states. [2020-11-06 22:39:56,162 WARN L194 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-11-06 22:40:00,432 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-11-06 22:40:05,832 WARN L194 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-11-06 22:40:07,924 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-11-06 22:40:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:40:11,090 INFO L93 Difference]: Finished difference Result 4319 states and 5375 transitions. [2020-11-06 22:40:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-06 22:40:11,090 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2020-11-06 22:40:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:40:11,104 INFO L225 Difference]: With dead ends: 4319 [2020-11-06 22:40:11,105 INFO L226 Difference]: Without dead ends: 2828 [2020-11-06 22:40:11,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2020-11-06 22:40:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-11-06 22:40:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2671. [2020-11-06 22:40:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2020-11-06 22:40:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 3232 transitions. [2020-11-06 22:40:11,251 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 3232 transitions. Word has length 331 [2020-11-06 22:40:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:40:11,251 INFO L481 AbstractCegarLoop]: Abstraction has 2671 states and 3232 transitions. [2020-11-06 22:40:11,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-06 22:40:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 3232 transitions. [2020-11-06 22:40:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-11-06 22:40:11,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:40:11,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-11-06 22:40:11,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:40:11,479 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:40:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:40:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash 70037201, now seen corresponding path program 1 times [2020-11-06 22:40:11,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:40:11,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350546410] [2020-11-06 22:40:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:40:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:40:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:40:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-06 22:40:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-06 22:40:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-06 22:40:11,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350546410] [2020-11-06 22:40:11,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727660713] [2020-11-06 22:40:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:40:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:12,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-06 22:40:12,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:40:12,135 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,148 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:40:12,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:40:12,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:40:12,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:40:12,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:40:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-06 22:40:12,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:40:12,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2020-11-06 22:40:12,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327849370] [2020-11-06 22:40:12,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:40:12,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:40:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:40:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:40:12,433 INFO L87 Difference]: Start difference. First operand 2671 states and 3232 transitions. Second operand 3 states. [2020-11-06 22:40:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:40:13,400 INFO L93 Difference]: Finished difference Result 6055 states and 7499 transitions. [2020-11-06 22:40:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:40:13,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 350 [2020-11-06 22:40:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:40:13,419 INFO L225 Difference]: With dead ends: 6055 [2020-11-06 22:40:13,420 INFO L226 Difference]: Without dead ends: 3384 [2020-11-06 22:40:13,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:40:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2020-11-06 22:40:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3384. [2020-11-06 22:40:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3384 states. [2020-11-06 22:40:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 4184 transitions. [2020-11-06 22:40:13,525 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 4184 transitions. Word has length 350 [2020-11-06 22:40:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:40:13,526 INFO L481 AbstractCegarLoop]: Abstraction has 3384 states and 4184 transitions. [2020-11-06 22:40:13,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:40:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 4184 transitions. [2020-11-06 22:40:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-11-06 22:40:13,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:40:13,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-06 22:40:13,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:40:13,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:40:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:40:13,758 INFO L82 PathProgramCache]: Analyzing trace with hash -61234517, now seen corresponding path program 1 times [2020-11-06 22:40:13,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:40:13,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196271777] [2020-11-06 22:40:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:40:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:40:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:40:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-06 22:40:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-06 22:40:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 293 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-06 22:40:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196271777] [2020-11-06 22:40:14,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347915809] [2020-11-06 22:40:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:40:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:40:14,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:40:14,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:40:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-06 22:40:14,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:40:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:40:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781228113] [2020-11-06 22:40:14,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:40:14,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:40:14,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:40:14,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:40:14,599 INFO L87 Difference]: Start difference. First operand 3384 states and 4184 transitions. Second operand 10 states. [2020-11-06 22:40:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:40:18,524 INFO L93 Difference]: Finished difference Result 6914 states and 8550 transitions. [2020-11-06 22:40:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 22:40:18,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 363 [2020-11-06 22:40:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:40:18,526 INFO L225 Difference]: With dead ends: 6914 [2020-11-06 22:40:18,526 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:40:18,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:40:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:40:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:40:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:40:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:40:18,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2020-11-06 22:40:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:40:18,540 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:40:18,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:40:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:40:18,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:40:18,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-06 22:40:18,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:40:18,968 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 166 [2020-11-06 22:40:19,712 WARN L194 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 166 [2020-11-06 22:40:19,852 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 31 [2020-11-06 22:40:20,697 WARN L194 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 49 [2020-11-06 22:40:22,315 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 197 DAG size of output: 52 [2020-11-06 22:40:22,872 WARN L194 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 39 [2020-11-06 22:40:23,768 WARN L194 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 49 [2020-11-06 22:40:23,773 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:40:23,773 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:40:23,773 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:40:23,773 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:40:23,774 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:40:23,774 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a1~0 |old(~a1~0)|) (= ~a19~0 |old(~a19~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~inputC~0 |old(~inputC~0)|) (= ~inputF~0 |old(~inputF~0)|) (= ~inputE~0 |old(~inputE~0)|) (= ~inputD~0 |old(~inputD~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~inputB~0 |old(~inputB~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a4~0 |old(~a4~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a10~0 |old(~a10~0)|)) [2020-11-06 22:40:23,774 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:40:23,774 INFO L266 CegarLoopResult]: For program point L531(lines 531 574) no Hoare annotation was computed. [2020-11-06 22:40:23,775 INFO L266 CegarLoopResult]: For program point L432(lines 432 574) no Hoare annotation was computed. [2020-11-06 22:40:23,775 INFO L266 CegarLoopResult]: For program point L267(lines 267 574) no Hoare annotation was computed. [2020-11-06 22:40:23,775 INFO L266 CegarLoopResult]: For program point L201(line 201) no Hoare annotation was computed. [2020-11-06 22:40:23,775 INFO L266 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-11-06 22:40:23,775 INFO L266 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L565(lines 565 574) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L400(lines 400 574) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L367(lines 367 574) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L467(lines 467 574) no Hoare annotation was computed. [2020-11-06 22:40:23,776 INFO L266 CegarLoopResult]: For program point L203-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L170-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L137-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L104-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L71-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L38-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L501(lines 501 574) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L303(lines 303 574) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L204(line 204) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-11-06 22:40:23,777 INFO L266 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L337(lines 337 574) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L238(lines 238 574) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L536(lines 536 574) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L173-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L140-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,778 INFO L266 CegarLoopResult]: For program point L107-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L74-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L41-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L438(lines 438 574) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L405(lines 405 574) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L372(lines 372 574) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L273(lines 273 574) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L266 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-11-06 22:40:23,779 INFO L262 CegarLoopResult]: At program point L108(line 108) the Hoare annotation is: (let ((.cse5 (not (<= |old(~a1~0)| 206))) (.cse4 (not (<= |old(~a19~0)| 8))) (.cse0 (not (<= 8 |old(~a19~0)|))) (.cse1 (not (<= |old(~a19~0)| 9))) (.cse2 (not (= 14 ~a4~0))) (.cse6 (not (= 0 |old(~a10~0)|))) (.cse3 (not (= ~a12~0 0)))) (and (or .cse0 .cse1 .cse2 (not (<= 1 |old(~a10~0)|)) .cse3) (or .cse4 .cse5 .cse2 .cse3) (or (not (= |old(~a10~0)| 1)) .cse2 .cse3) (or .cse5 .cse2 .cse6 .cse3) (or .cse4 .cse0 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse6 .cse3))) [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L108-1(line 108) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L571(lines 571 574) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L241(lines 241 574) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L506(lines 506 574) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L473(lines 473 574) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L308(lines 308 574) no Hoare annotation was computed. [2020-11-06 22:40:23,780 INFO L266 CegarLoopResult]: For program point L176-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L143-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L110-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L77-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L44-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L342(lines 342 574) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-11-06 22:40:23,781 INFO L266 CegarLoopResult]: For program point L542(lines 542 574) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L410(lines 410 574) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L377(lines 377 574) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L212(lines 212 574) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L179-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L146-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L113-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L80-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L47-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L444(lines 444 574) no Hoare annotation was computed. [2020-11-06 22:40:23,782 INFO L266 CegarLoopResult]: For program point L279(lines 279 574) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L246(lines 246 574) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L180(line 180) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L147(line 147) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L511(lines 511 574) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L478(lines 478 574) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L380(lines 380 574) no Hoare annotation was computed. [2020-11-06 22:40:23,783 INFO L266 CegarLoopResult]: For program point L347(lines 347 574) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L314(lines 314 574) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L182-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L149-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L116-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L83-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L50-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-11-06 22:40:23,784 INFO L266 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-11-06 22:40:23,785 INFO L266 CegarLoopResult]: For program point calculate_outputFINAL(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,785 INFO L266 CegarLoopResult]: For program point calculate_outputEXIT(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,785 INFO L266 CegarLoopResult]: For program point L547(lines 547 574) no Hoare annotation was computed. [2020-11-06 22:40:23,785 INFO L266 CegarLoopResult]: For program point L217(lines 217 574) no Hoare annotation was computed. [2020-11-06 22:40:23,788 INFO L266 CegarLoopResult]: For program point L416(lines 416 574) no Hoare annotation was computed. [2020-11-06 22:40:23,788 INFO L266 CegarLoopResult]: For program point L251(lines 251 574) no Hoare annotation was computed. [2020-11-06 22:40:23,788 INFO L266 CegarLoopResult]: For program point L185-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,788 INFO L266 CegarLoopResult]: For program point L152-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,788 INFO L266 CegarLoopResult]: For program point L119-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L86-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L53-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L516(lines 516 574) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L483(lines 483 574) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L450(lines 450 574) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L285(lines 285 574) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-11-06 22:40:23,789 INFO L266 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L550(lines 550 574) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L385(lines 385 574) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L319(lines 319 574) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L353(lines 353 574) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L188-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L155-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L122-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,790 INFO L266 CegarLoopResult]: For program point L89-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L23(lines 23 25) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L56-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L23-2(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L519(lines 519 574) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L288(lines 288 574) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L222(lines 222 574) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L189(line 189) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-11-06 22:40:23,791 INFO L266 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L421(lines 421 574) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L322(lines 322 574) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L256(lines 256 574) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L356(lines 356 574) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L191-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L158-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L125-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L92-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,792 INFO L266 CegarLoopResult]: For program point L59-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L26-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L489(lines 489 574) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L262 CegarLoopResult]: At program point calculate_outputENTRY(lines 22 576) the Hoare annotation is: (let ((.cse9 (= ~a10~0 |old(~a10~0)|)) (.cse8 (= ~a1~0 |old(~a1~0)|)) (.cse11 (= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (not (<= |old(~a1~0)| 206))) (.cse0 (not (<= |old(~a19~0)| 8))) (.cse5 (not (= 0 |old(~a10~0)|))) (.cse6 (and (= ~a10~0 0) .cse8 .cse11)) (.cse2 (and .cse8 .cse11 .cse9)) (.cse7 (not (<= 8 |old(~a19~0)|))) (.cse10 (not (<= |old(~a19~0)| 9))) (.cse3 (not (= 14 ~a4~0))) (.cse4 (not (= ~a12~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse3 .cse5 .cse6 .cse4) (or (not (= |old(~a10~0)| 1)) .cse2 .cse3 .cse4) (or .cse0 .cse7 .cse3 (and (<= 8 ~a19~0) (<= ~a19~0 8) .cse8 .cse9) .cse4) (or .cse7 .cse10 .cse3 .cse5 .cse6 .cse4) (or .cse2 .cse7 .cse10 .cse3 (not (<= 1 |old(~a10~0)|)) .cse4)))) [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L456(lines 456 574) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L390(lines 390 574) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L192(line 192) no Hoare annotation was computed. [2020-11-06 22:40:23,793 INFO L266 CegarLoopResult]: For program point L159(line 159) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L556(lines 556 574) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L325(lines 325 574) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L359(lines 359 574) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L293(lines 293 574) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L227(lines 227 574) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L194-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,794 INFO L266 CegarLoopResult]: For program point L161-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L128-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L95-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L62-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L29-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L525(lines 525 574) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L195(line 195) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-11-06 22:40:23,795 INFO L266 CegarLoopResult]: For program point L559(lines 559 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L427(lines 427 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L328(lines 328 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L262(lines 262 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L395(lines 395 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L362(lines 362 574) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L197-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L164-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L131-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L98-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L65-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,796 INFO L266 CegarLoopResult]: For program point L32-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L528(lines 528 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L495(lines 495 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L462(lines 462 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L198(line 198) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L331(lines 331 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L298(lines 298 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L233(lines 233 574) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L200-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L167-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L134-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,797 INFO L266 CegarLoopResult]: For program point L101-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point L68-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point L35-1(lines 22 576) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 8 ~a19~0) (= 14 ~a4~0) (= ~a10~0 0) (= ~a12~0 0) (<= ~a19~0 9) (= 23 ~a1~0)) [2020-11-06 22:40:23,798 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 578 594) the Hoare annotation is: (or (and (<= 23 ~a1~0) (<= ~a1~0 23) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (not (= 14 ~a4~0)) (not (= 0 |old(~a10~0)|)) (not (= 23 |old(~a1~0)|)) (not (= ~a12~0 0))) [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 578 594) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L262 CegarLoopResult]: At program point L592(line 592) the Hoare annotation is: (let ((.cse3 (<= 8 ~a19~0)) (.cse1 (= ~a10~0 0)) (.cse5 (<= ~a19~0 9)) (.cse0 (<= 9 |old(~a19~0)|)) (.cse4 (<= ~a19~0 8)) (.cse2 (<= ~a1~0 206))) (or (and .cse0 .cse1 .cse2) (and (= ~a1~0 |old(~a1~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|)) (not (= 0 |old(~a10~0)|)) (not (= 23 |old(~a1~0)|)) (not (= ~a12~0 0)) (and .cse0 .cse3 .cse4) (not (<= 8 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and .cse0 .cse3 (<= 1 ~a10~0) .cse5) (and .cse0 .cse3 .cse1 .cse5) (and (= ~a10~0 1) .cse0) (and .cse0 .cse4 .cse2))) [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point L592-1(line 592) no Hoare annotation was computed. [2020-11-06 22:40:23,798 INFO L266 CegarLoopResult]: For program point L589(line 589) no Hoare annotation was computed. [2020-11-06 22:40:23,799 INFO L262 CegarLoopResult]: At program point L584-2(lines 584 593) the Hoare annotation is: (let ((.cse3 (<= 8 ~a19~0)) (.cse1 (= ~a10~0 0)) (.cse5 (<= ~a19~0 9)) (.cse0 (<= 9 |old(~a19~0)|)) (.cse4 (<= ~a19~0 8)) (.cse2 (<= ~a1~0 206))) (or (and .cse0 .cse1 .cse2) (and (= ~a1~0 |old(~a1~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|)) (not (= 0 |old(~a10~0)|)) (not (= 23 |old(~a1~0)|)) (not (= ~a12~0 0)) (and .cse0 .cse3 .cse4) (not (<= 8 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and .cse0 .cse3 (<= 1 ~a10~0) .cse5) (and .cse0 .cse3 .cse1 .cse5) (and (= ~a10~0 1) .cse0) (and .cse0 .cse4 .cse2))) [2020-11-06 22:40:23,799 INFO L266 CegarLoopResult]: For program point L584-3(lines 578 594) no Hoare annotation was computed. [2020-11-06 22:40:23,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:40:23 BoogieIcfgContainer [2020-11-06 22:40:23,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:40:23,832 INFO L168 Benchmark]: Toolchain (without parser) took 62169.08 ms. Allocated memory was 155.2 MB in the beginning and 499.1 MB in the end (delta: 343.9 MB). Free memory was 129.0 MB in the beginning and 212.0 MB in the end (delta: -83.0 MB). Peak memory consumption was 297.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:40:23,832 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:40:23,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.21 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 101.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:40:23,834 INFO L168 Benchmark]: Boogie Preprocessor took 166.43 ms. Allocated memory is still 155.2 MB. Free memory was 101.8 MB in the beginning and 133.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:40:23,835 INFO L168 Benchmark]: RCFGBuilder took 1582.66 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 133.3 MB in the beginning and 150.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:40:23,835 INFO L168 Benchmark]: TraceAbstraction took 59634.11 ms. Allocated memory was 191.9 MB in the beginning and 499.1 MB in the end (delta: 307.2 MB). Free memory was 150.2 MB in the beginning and 212.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 280.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:40:23,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 773.21 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 101.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 166.43 ms. Allocated memory is still 155.2 MB. Free memory was 101.8 MB in the beginning and 133.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1582.66 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 133.3 MB in the beginning and 150.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 59634.11 ms. Allocated memory was 191.9 MB in the beginning and 499.1 MB in the end (delta: 307.2 MB). Free memory was 150.2 MB in the beginning and 212.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 280.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 584]: Loop Invariant Derived loop invariant: (((((((((((((9 <= \old(a19) && a10 == 0) && a1 <= 206) || ((a1 == \old(a1) && a19 == \old(a19)) && a10 == \old(a10))) || !(0 == \old(a10))) || !(23 == \old(a1))) || !(a12 == 0)) || ((9 <= \old(a19) && 8 <= a19) && a19 <= 8)) || !(8 <= \old(a19))) || !(14 == a4)) || !(\old(a19) <= 9)) || (((9 <= \old(a19) && 8 <= a19) && 1 <= a10) && a19 <= 9)) || (((9 <= \old(a19) && 8 <= a19) && a10 == 0) && a19 <= 9)) || (a10 == 1 && 9 <= \old(a19))) || ((9 <= \old(a19) && a19 <= 8) && a1 <= 206) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 54.4s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 299 SDtfs, 5018 SDslu, 468 SDs, 0 SdLazy, 12087 SolverSat, 1978 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1995 GetRequests, 1856 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3384occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1294 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 240 PreInvPairs, 300 NumberOfFragments, 593 HoareAnnotationTreeSize, 240 FomulaSimplifications, 191640 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 9 FomulaSimplificationsInter, 14373 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 3901 NumberOfCodeBlocks, 3901 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3884 ConstructedInterpolants, 1 QuantifiedInterpolants, 2431042 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3553 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 2893/3152 InterpolantCoveringCapability, 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...