/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:27:54,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:27:54,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:27:54,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:27:54,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:27:54,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:27:54,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:27:54,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:27:54,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:27:54,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:27:54,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:27:54,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:27:54,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:27:54,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:27:54,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:27:54,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:27:54,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:27:54,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:27:54,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:27:54,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:27:54,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:27:54,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:27:54,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:27:54,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:27:54,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:27:54,949 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 [2020-07-07 11:27:54,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:27:54,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:27:54,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:27:54,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:27:54,968 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:27:54,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:27:54,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:27:54,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:27:54,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:27:54,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:27:54,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:27:54,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:27:54,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:27:54,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:27:54,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:27:54,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:27:54,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:27:54,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:27:54,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:27:54,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:27:54,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:27:54,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:27:54,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:27:54,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:27:54,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:27:54,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:27:54,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:27:54,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:27:54,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:27:54,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:27:55,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:27:55,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:27:55,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:27:55,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:27:55,343 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:27:55,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-07 11:27:55,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46edadfe9/90e204333def4aa3a6449d92147968ad/FLAG2dc9f0c31 [2020-07-07 11:27:56,175 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:27:56,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-07 11:27:56,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46edadfe9/90e204333def4aa3a6449d92147968ad/FLAG2dc9f0c31 [2020-07-07 11:27:56,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46edadfe9/90e204333def4aa3a6449d92147968ad [2020-07-07 11:27:56,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:27:56,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:27:56,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:27:56,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:27:56,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:27:56,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:27:56" (1/1) ... [2020-07-07 11:27:56,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63745e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:56, skipping insertion in model container [2020-07-07 11:27:56,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:27:56" (1/1) ... [2020-07-07 11:27:56,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:27:56,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:27:57,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:27:57,049 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:27:57,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:27:57,336 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:27:57,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57 WrapperNode [2020-07-07 11:27:57,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:27:57,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:27:57,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:27:57,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:27:57,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (1/1) ... [2020-07-07 11:27:57,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:27:57,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:27:57,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:27:57,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:27:57,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (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 [2020-07-07 11:27:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:27:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:27:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-07 11:27:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-07 11:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 11:27:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:27:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:27:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:27:59,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:27:59,339 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:27:59,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:27:59 BoogieIcfgContainer [2020-07-07 11:27:59,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:27:59,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:27:59,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:27:59,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:27:59,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:27:56" (1/3) ... [2020-07-07 11:27:59,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:27:59, skipping insertion in model container [2020-07-07 11:27:59,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:27:57" (2/3) ... [2020-07-07 11:27:59,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:27:59, skipping insertion in model container [2020-07-07 11:27:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:27:59" (3/3) ... [2020-07-07 11:27:59,367 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-07 11:27:59,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:27:59,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:27:59,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:27:59,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:27:59,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:27:59,445 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:27:59,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:27:59,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:27:59,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:27:59,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:27:59,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:27:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-07 11:27:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-07 11:27:59,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:27:59,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:27:59,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:27:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:27:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-07 11:27:59,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:27:59,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001917957] [2020-07-07 11:27:59,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:27:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:27:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:27:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:27:59,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001917957] [2020-07-07 11:27:59,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:27:59,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:27:59,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065765588] [2020-07-07 11:27:59,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:27:59,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:27:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:27:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:27:59,978 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2020-07-07 11:28:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:02,312 INFO L93 Difference]: Finished difference Result 730 states and 1301 transitions. [2020-07-07 11:28:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:28:02,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-07-07 11:28:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:02,338 INFO L225 Difference]: With dead ends: 730 [2020-07-07 11:28:02,338 INFO L226 Difference]: Without dead ends: 447 [2020-07-07 11:28:02,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:28:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-07-07 11:28:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-07-07 11:28:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-07-07 11:28:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions. [2020-07-07 11:28:02,467 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 55 [2020-07-07 11:28:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:02,468 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 672 transitions. [2020-07-07 11:28:02,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:28:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions. [2020-07-07 11:28:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-07 11:28:02,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:02,476 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, 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] [2020-07-07 11:28:02,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:28:02,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-07 11:28:02,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:02,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008364407] [2020-07-07 11:28:02,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:02,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008364407] [2020-07-07 11:28:02,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:28:02,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:28:02,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199358158] [2020-07-07 11:28:02,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:28:02,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:28:02,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:28:02,836 INFO L87 Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 9 states. [2020-07-07 11:28:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:04,741 INFO L93 Difference]: Finished difference Result 1041 states and 1612 transitions. [2020-07-07 11:28:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:28:04,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-07-07 11:28:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:04,749 INFO L225 Difference]: With dead ends: 1041 [2020-07-07 11:28:04,750 INFO L226 Difference]: Without dead ends: 606 [2020-07-07 11:28:04,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:28:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-07-07 11:28:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 592. [2020-07-07 11:28:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-07 11:28:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 829 transitions. [2020-07-07 11:28:04,799 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 829 transitions. Word has length 128 [2020-07-07 11:28:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:04,800 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 829 transitions. [2020-07-07 11:28:04,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:28:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 829 transitions. [2020-07-07 11:28:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-07 11:28:04,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:04,805 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, 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] [2020-07-07 11:28:04,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:28:04,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:04,806 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-07 11:28:04,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:04,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932028501] [2020-07-07 11:28:04,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:05,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932028501] [2020-07-07 11:28:05,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623508696] [2020-07-07 11:28:05,236 INFO L94 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 [2020-07-07 11:28:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:05,329 INFO L264 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:28:05,341 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:28:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:05,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:28:05,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2020-07-07 11:28:05,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450998806] [2020-07-07 11:28:05,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:28:05,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:05,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:28:05,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:28:05,434 INFO L87 Difference]: Start difference. First operand 592 states and 829 transitions. Second operand 3 states. [2020-07-07 11:28:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:06,368 INFO L93 Difference]: Finished difference Result 1756 states and 2510 transitions. [2020-07-07 11:28:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:28:06,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-07 11:28:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:06,379 INFO L225 Difference]: With dead ends: 1756 [2020-07-07 11:28:06,379 INFO L226 Difference]: Without dead ends: 1170 [2020-07-07 11:28:06,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:28:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-07-07 11:28:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1023. [2020-07-07 11:28:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-07-07 11:28:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1444 transitions. [2020-07-07 11:28:06,435 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1444 transitions. Word has length 134 [2020-07-07 11:28:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:06,436 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1444 transitions. [2020-07-07 11:28:06,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:28:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1444 transitions. [2020-07-07 11:28:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 11:28:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:06,443 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, 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] [2020-07-07 11:28:06,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:28:06,658 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:06,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:06,659 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-07 11:28:06,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:06,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316392817] [2020-07-07 11:28:06,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:06,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316392817] [2020-07-07 11:28:06,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:28:06,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:28:06,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820918419] [2020-07-07 11:28:06,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:28:06,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:28:06,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:28:06,964 INFO L87 Difference]: Start difference. First operand 1023 states and 1444 transitions. Second operand 9 states. [2020-07-07 11:28:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:09,760 INFO L93 Difference]: Finished difference Result 2370 states and 3400 transitions. [2020-07-07 11:28:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 11:28:09,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-07-07 11:28:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:09,780 INFO L225 Difference]: With dead ends: 2370 [2020-07-07 11:28:09,780 INFO L226 Difference]: Without dead ends: 1353 [2020-07-07 11:28:09,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:28:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2020-07-07 11:28:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1045. [2020-07-07 11:28:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-07-07 11:28:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1316 transitions. [2020-07-07 11:28:09,858 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1316 transitions. Word has length 167 [2020-07-07 11:28:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:09,860 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1316 transitions. [2020-07-07 11:28:09,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:28:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1316 transitions. [2020-07-07 11:28:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-07 11:28:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:09,866 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, 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] [2020-07-07 11:28:09,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:28:09,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 528848677, now seen corresponding path program 1 times [2020-07-07 11:28:09,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:09,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659342993] [2020-07-07 11:28:09,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:10,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659342993] [2020-07-07 11:28:10,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:28:10,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:28:10,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760921181] [2020-07-07 11:28:10,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:28:10,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:28:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:28:10,192 INFO L87 Difference]: Start difference. First operand 1045 states and 1316 transitions. Second operand 7 states. [2020-07-07 11:28:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:11,826 INFO L93 Difference]: Finished difference Result 2261 states and 2836 transitions. [2020-07-07 11:28:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:28:11,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-07-07 11:28:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:11,835 INFO L225 Difference]: With dead ends: 2261 [2020-07-07 11:28:11,836 INFO L226 Difference]: Without dead ends: 1222 [2020-07-07 11:28:11,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:28:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-07-07 11:28:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1047. [2020-07-07 11:28:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-07-07 11:28:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1272 transitions. [2020-07-07 11:28:11,884 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1272 transitions. Word has length 172 [2020-07-07 11:28:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:11,885 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1272 transitions. [2020-07-07 11:28:11,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:28:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1272 transitions. [2020-07-07 11:28:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-07 11:28:11,892 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:11,892 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:28:11,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:28:11,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-07 11:28:11,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:11,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459395217] [2020-07-07 11:28:11,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-07 11:28:12,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459395217] [2020-07-07 11:28:12,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061014949] [2020-07-07 11:28:12,218 INFO L94 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 [2020-07-07 11:28:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:12,378 INFO L264 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:28:12,386 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:28:12,410 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-07 11:28:12,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:28:12,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-07-07 11:28:12,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122643521] [2020-07-07 11:28:12,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:28:12,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:12,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:28:12,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:28:12,687 INFO L87 Difference]: Start difference. First operand 1047 states and 1272 transitions. Second operand 3 states. [2020-07-07 11:28:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:13,961 INFO L93 Difference]: Finished difference Result 2672 states and 3359 transitions. [2020-07-07 11:28:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:28:13,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-07 11:28:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:13,975 INFO L225 Difference]: With dead ends: 2672 [2020-07-07 11:28:13,975 INFO L226 Difference]: Without dead ends: 1774 [2020-07-07 11:28:13,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:28:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-07-07 11:28:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1486. [2020-07-07 11:28:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-07-07 11:28:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1809 transitions. [2020-07-07 11:28:14,046 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1809 transitions. Word has length 237 [2020-07-07 11:28:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:14,047 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 1809 transitions. [2020-07-07 11:28:14,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:28:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1809 transitions. [2020-07-07 11:28:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-07 11:28:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:14,055 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:28:14,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:28:14,270 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1661435255, now seen corresponding path program 1 times [2020-07-07 11:28:14,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:14,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646219129] [2020-07-07 11:28:14,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:28:15,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646219129] [2020-07-07 11:28:15,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251920389] [2020-07-07 11:28:15,647 INFO L94 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 [2020-07-07 11:28:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:15,875 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:28:15,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:28:15,953 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-07 11:28:15,954 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:16,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:28:16,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 16 [2020-07-07 11:28:16,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324749316] [2020-07-07 11:28:16,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 11:28:16,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 11:28:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-07 11:28:16,085 INFO L87 Difference]: Start difference. First operand 1486 states and 1809 transitions. Second operand 16 states. [2020-07-07 11:28:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:24,422 INFO L93 Difference]: Finished difference Result 4379 states and 5876 transitions. [2020-07-07 11:28:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 11:28:24,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 242 [2020-07-07 11:28:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:24,448 INFO L225 Difference]: With dead ends: 4379 [2020-07-07 11:28:24,448 INFO L226 Difference]: Without dead ends: 3042 [2020-07-07 11:28:24,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=610, Invalid=2360, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 11:28:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-07-07 11:28:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2833. [2020-07-07 11:28:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-07-07 11:28:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3475 transitions. [2020-07-07 11:28:24,580 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3475 transitions. Word has length 242 [2020-07-07 11:28:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:24,581 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3475 transitions. [2020-07-07 11:28:24,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 11:28:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3475 transitions. [2020-07-07 11:28:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-07 11:28:24,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:24,588 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:28:24,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:28:24,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:24,805 INFO L82 PathProgramCache]: Analyzing trace with hash -14922590, now seen corresponding path program 1 times [2020-07-07 11:28:24,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:24,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810092327] [2020-07-07 11:28:24,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:28:25,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810092327] [2020-07-07 11:28:25,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29176923] [2020-07-07 11:28:25,444 INFO L94 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 [2020-07-07 11:28:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:25,600 INFO L264 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:28:25,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:28:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:25,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:28:25,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-07-07 11:28:25,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137743885] [2020-07-07 11:28:25,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:28:25,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:25,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:28:25,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:28:25,754 INFO L87 Difference]: Start difference. First operand 2833 states and 3475 transitions. Second operand 14 states. [2020-07-07 11:28:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:28:31,375 INFO L93 Difference]: Finished difference Result 7995 states and 9961 transitions. [2020-07-07 11:28:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 11:28:31,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 251 [2020-07-07 11:28:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:28:31,394 INFO L225 Difference]: With dead ends: 7995 [2020-07-07 11:28:31,395 INFO L226 Difference]: Without dead ends: 3538 [2020-07-07 11:28:31,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=1142, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 11:28:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2020-07-07 11:28:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2815. [2020-07-07 11:28:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2815 states. [2020-07-07 11:28:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3398 transitions. [2020-07-07 11:28:31,557 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3398 transitions. Word has length 251 [2020-07-07 11:28:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:28:31,557 INFO L479 AbstractCegarLoop]: Abstraction has 2815 states and 3398 transitions. [2020-07-07 11:28:31,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:28:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3398 transitions. [2020-07-07 11:28:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-07 11:28:31,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:28:31,570 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, 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, 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] [2020-07-07 11:28:31,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:28:31,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:28:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:28:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash 253048858, now seen corresponding path program 1 times [2020-07-07 11:28:31,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:28:31,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866398879] [2020-07-07 11:28:31,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:28:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:28:32,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866398879] [2020-07-07 11:28:32,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879910311] [2020-07-07 11:28:32,809 INFO L94 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 [2020-07-07 11:28:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:28:32,931 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:28:32,937 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:28:33,034 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:33,040 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,041 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,042 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:28:33,053 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,054 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,060 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,062 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,065 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:28:33,067 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,068 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,069 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,070 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:28:33,077 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,078 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,080 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,083 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,084 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:28:33,087 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:33,091 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,095 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,097 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,100 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:33,101 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:28:33,103 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:33,104 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:28:47,065 WARN L193 SmtUtils]: Spent 13.82 s on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-07-07 11:28:49,149 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-07 11:28:49,365 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-07 11:28:49,366 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:49,367 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:49,433 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:28:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:28:49,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:28:49,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 21 [2020-07-07 11:28:49,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416466665] [2020-07-07 11:28:49,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 11:28:49,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:28:49,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 11:28:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:28:49,620 INFO L87 Difference]: Start difference. First operand 2815 states and 3398 transitions. Second operand 21 states. [2020-07-07 11:28:50,805 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-07-07 11:28:52,628 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-07-07 11:28:59,707 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-07-07 11:28:59,917 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-07-07 11:29:00,211 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-07-07 11:29:06,683 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-07-07 11:29:08,095 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-07-07 11:29:11,015 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-07-07 11:29:21,991 WARN L193 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-07-07 11:29:56,349 WARN L193 SmtUtils]: Spent 31.69 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-07-07 11:29:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:29:59,746 INFO L93 Difference]: Finished difference Result 6103 states and 7457 transitions. [2020-07-07 11:29:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 11:29:59,747 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 287 [2020-07-07 11:29:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:29:59,764 INFO L225 Difference]: With dead ends: 6103 [2020-07-07 11:29:59,764 INFO L226 Difference]: Without dead ends: 3437 [2020-07-07 11:29:59,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 63.8s TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 11:29:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2020-07-07 11:29:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 3407. [2020-07-07 11:29:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2020-07-07 11:29:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4078 transitions. [2020-07-07 11:29:59,889 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4078 transitions. Word has length 287 [2020-07-07 11:29:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:29:59,890 INFO L479 AbstractCegarLoop]: Abstraction has 3407 states and 4078 transitions. [2020-07-07 11:29:59,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 11:29:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4078 transitions. [2020-07-07 11:29:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-07 11:29:59,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:29:59,901 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, 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, 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] [2020-07-07 11:30:00,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:30:00,115 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:30:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:30:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash 273888777, now seen corresponding path program 1 times [2020-07-07 11:30:00,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:30:00,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046584141] [2020-07-07 11:30:00,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:30:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:30:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:30:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:30:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:30:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-07-07 11:30:00,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046584141] [2020-07-07 11:30:00,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305176034] [2020-07-07 11:30:00,557 INFO L94 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 [2020-07-07 11:30:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:30:00,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:30:00,693 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:30:00,835 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:30:00,839 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:30:00,840 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:30:00,841 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:30:00,841 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,843 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,845 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,854 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,857 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,857 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,865 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,869 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,873 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,875 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,876 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,881 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,883 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,886 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,889 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,890 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,891 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,892 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,895 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,896 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,902 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,905 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,906 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,907 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,908 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,909 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,911 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,913 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,919 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,921 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,922 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,923 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,927 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:30:00,928 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,929 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,930 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,931 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,932 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-07 11:30:00,935 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,936 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,937 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,938 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,939 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,940 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,942 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,943 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,944 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,945 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,956 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,961 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:30:00,962 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:30:00,963 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:30:00,963 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,965 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,967 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,968 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,969 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,971 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,972 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,974 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:30:00,976 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,979 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,982 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,983 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,984 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,986 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,988 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-07 11:30:00,989 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,990 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-07 11:30:00,991 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,992 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,993 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:00,994 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-07 11:30:00,995 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-07 11:30:55,009 WARN L193 SmtUtils]: Spent 48.71 s on a formula simplification. DAG size of input: 242 DAG size of output: 54 [2020-07-07 11:31:09,566 WARN L193 SmtUtils]: Spent 8.13 s on a formula simplification that was a NOOP. DAG size: 109 [2020-07-07 11:31:09,572 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-07 11:31:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-07 11:31:18,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:31:18,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2020-07-07 11:31:18,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736260134] [2020-07-07 11:31:18,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:31:18,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:18,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:31:18,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=104, Unknown=9, NotChecked=0, Total=156 [2020-07-07 11:31:18,923 INFO L87 Difference]: Start difference. First operand 3407 states and 4078 transitions. Second operand 13 states. [2020-07-07 11:32:19,586 WARN L193 SmtUtils]: Spent 45.86 s on a formula simplification that was a NOOP. DAG size: 133 [2020-07-07 11:32:48,432 WARN L193 SmtUtils]: Spent 20.41 s on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 11:33:23,518 WARN L193 SmtUtils]: Spent 20.57 s on a formula simplification that was a NOOP. DAG size: 56 [2020-07-07 11:33:49,747 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-07 11:33:55,050 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 10 [2020-07-07 11:34:34,371 WARN L193 SmtUtils]: Spent 22.67 s on a formula simplification. DAG size of input: 141 DAG size of output: 45 [2020-07-07 11:34:36,752 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-07 11:34:59,579 WARN L193 SmtUtils]: Spent 17.44 s on a formula simplification. DAG size of input: 147 DAG size of output: 58 [2020-07-07 11:35:03,407 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2020-07-07 11:35:54,716 WARN L193 SmtUtils]: Spent 14.73 s on a formula simplification. DAG size of input: 142 DAG size of output: 31 [2020-07-07 11:37:09,200 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 7 [2020-07-07 11:38:16,702 WARN L193 SmtUtils]: Spent 44.73 s on a formula simplification that was a NOOP. DAG size: 132 [2020-07-07 11:39:19,258 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 10 [2020-07-07 11:40:10,237 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 145 DAG size of output: 33 [2020-07-07 11:41:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:34,416 INFO L93 Difference]: Finished difference Result 8759 states and 10616 transitions. [2020-07-07 11:41:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 11:41:34,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 306 [2020-07-07 11:41:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:34,500 INFO L225 Difference]: With dead ends: 8759 [2020-07-07 11:41:34,500 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:41:34,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 351.0s TimeCoverageRelationStatistics Valid=253, Invalid=515, Unknown=44, NotChecked=0, Total=812 [2020-07-07 11:41:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:41:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:41:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:41:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:41:34,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2020-07-07 11:41:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:34,519 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:41:34,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:41:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:41:34,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:41:34,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:41:34,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:41:38,733 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 257 [2020-07-07 11:41:39,187 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 257 [2020-07-07 11:41:39,769 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-07 11:41:41,743 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-07-07 11:42:19,564 WARN L193 SmtUtils]: Spent 37.79 s on a formula simplification. DAG size of input: 320 DAG size of output: 62 [2020-07-07 11:42:20,118 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 31