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/array-crafted/zero_sum_const_m2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:41:42,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:41:42,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:41:42,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:41:42,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:41:42,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:41:42,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:41:42,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:41:42,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:41:42,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:41:42,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:41:42,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:41:42,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:41:42,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:41:42,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:41:42,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:41:42,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:41:42,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:41:42,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:41:42,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:41:42,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:41:42,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:41:42,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:41:42,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:41:42,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 21:41:42,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 21:41:42,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 21:41:42,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 21:41:42,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 21:41:42,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 21:41:42,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:41:42,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:41:42,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:41:42,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:41:42,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:41:42,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:41:42,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:41:42,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:41:42,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:41:42,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:41:42,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:41:42,461 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 [2019-10-14 21:41:42,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:41:42,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:41:42,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:41:42,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:41:42,481 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:41:42,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:41:42,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:41:42,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:41:42,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:41:42,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:41:42,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:41:42,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:41:42,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:41:42,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:41:42,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:41:42,485 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:41:42,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:41:42,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:41:42,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:41:42,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:41:42,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:41:42,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:41:42,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:41:42,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:41:42,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:41:42,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:41:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:41:42,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:41:42,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:41:42,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:41:42,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:41:42,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:41:42,761 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:41:42,761 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:41:42,762 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-10-14 21:41:42,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3114909d/e6197e7049bd4880bf2102dc7362daf6/FLAG73f9e4113 [2019-10-14 21:41:43,295 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:41:43,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-10-14 21:41:43,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3114909d/e6197e7049bd4880bf2102dc7362daf6/FLAG73f9e4113 [2019-10-14 21:41:43,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3114909d/e6197e7049bd4880bf2102dc7362daf6 [2019-10-14 21:41:43,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:41:43,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:41:43,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:41:43,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:41:43,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:41:43,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:43,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580da5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43, skipping insertion in model container [2019-10-14 21:41:43,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:43,750 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:41:43,770 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:41:43,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:41:43,967 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:41:43,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:41:43,998 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:41:43,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43 WrapperNode [2019-10-14 21:41:43,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:41:44,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:41:44,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:41:44,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:41:44,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (1/1) ... [2019-10-14 21:41:44,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:41:44,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:41:44,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:41:44,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:41:44,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (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 [2019-10-14 21:41:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:41:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:41:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 21:41:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:41:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:41:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 21:41:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 21:41:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 21:41:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:41:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:41:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 21:41:44,513 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:41:44,513 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 21:41:44,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:41:44 BoogieIcfgContainer [2019-10-14 21:41:44,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:41:44,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:41:44,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:41:44,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:41:44,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:41:43" (1/3) ... [2019-10-14 21:41:44,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef11d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:41:44, skipping insertion in model container [2019-10-14 21:41:44,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:41:43" (2/3) ... [2019-10-14 21:41:44,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef11d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:41:44, skipping insertion in model container [2019-10-14 21:41:44,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:41:44" (3/3) ... [2019-10-14 21:41:44,522 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m2.c [2019-10-14 21:41:44,547 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:41:44,556 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:41:44,567 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:41:44,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:41:44,594 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:41:44,594 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:41:44,595 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:41:44,595 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:41:44,595 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:41:44,595 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:41:44,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:41:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-14 21:41:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 21:41:44,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:44,617 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:41:44,619 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:44,625 INFO L82 PathProgramCache]: Analyzing trace with hash -720839896, now seen corresponding path program 1 times [2019-10-14 21:41:44,633 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:44,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417559516] [2019-10-14 21:41:44,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:44,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:44,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:41:44,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417559516] [2019-10-14 21:41:44,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:41:44,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 21:41:44,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390595768] [2019-10-14 21:41:44,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:41:44,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:41:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 21:41:44,860 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-10-14 21:41:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:44,992 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2019-10-14 21:41:44,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:41:44,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-14 21:41:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:45,004 INFO L225 Difference]: With dead ends: 57 [2019-10-14 21:41:45,004 INFO L226 Difference]: Without dead ends: 26 [2019-10-14 21:41:45,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 21:41:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-14 21:41:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-14 21:41:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 21:41:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-14 21:41:45,071 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-10-14 21:41:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:45,073 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-14 21:41:45,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:41:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-14 21:41:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 21:41:45,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:45,076 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:41:45,077 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1191176598, now seen corresponding path program 1 times [2019-10-14 21:41:45,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:45,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166244042] [2019-10-14 21:41:45,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:41:45,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166244042] [2019-10-14 21:41:45,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:41:45,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 21:41:45,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065487055] [2019-10-14 21:41:45,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 21:41:45,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:45,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 21:41:45,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:41:45,296 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2019-10-14 21:41:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:45,453 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-14 21:41:45,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 21:41:45,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-14 21:41:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:45,455 INFO L225 Difference]: With dead ends: 38 [2019-10-14 21:41:45,455 INFO L226 Difference]: Without dead ends: 33 [2019-10-14 21:41:45,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:41:45,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-14 21:41:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-14 21:41:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 21:41:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-10-14 21:41:45,465 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-10-14 21:41:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:45,466 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-10-14 21:41:45,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 21:41:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-10-14 21:41:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 21:41:45,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:45,469 INFO L380 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] [2019-10-14 21:41:45,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash -988852588, now seen corresponding path program 1 times [2019-10-14 21:41:45,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:45,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475518442] [2019-10-14 21:41:45,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:41:45,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475518442] [2019-10-14 21:41:45,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:41:45,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:41:45,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105623228] [2019-10-14 21:41:45,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 21:41:45,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:45,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 21:41:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:41:45,597 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2019-10-14 21:41:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:45,685 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-10-14 21:41:45,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 21:41:45,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-10-14 21:41:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:45,689 INFO L225 Difference]: With dead ends: 59 [2019-10-14 21:41:45,689 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 21:41:45,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:41:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 21:41:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-10-14 21:41:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-14 21:41:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-10-14 21:41:45,698 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2019-10-14 21:41:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:45,698 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-10-14 21:41:45,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 21:41:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-10-14 21:41:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 21:41:45,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:45,700 INFO L380 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] [2019-10-14 21:41:45,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:45,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1991586542, now seen corresponding path program 1 times [2019-10-14 21:41:45,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:45,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432679745] [2019-10-14 21:41:45,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 21:41:45,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432679745] [2019-10-14 21:41:45,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:41:45,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 21:41:45,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228639113] [2019-10-14 21:41:45,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:41:45,786 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:41:45,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:41:45,787 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-10-14 21:41:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:45,905 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-10-14 21:41:45,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 21:41:45,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-14 21:41:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:45,907 INFO L225 Difference]: With dead ends: 55 [2019-10-14 21:41:45,907 INFO L226 Difference]: Without dead ends: 36 [2019-10-14 21:41:45,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:41:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-14 21:41:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-10-14 21:41:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 21:41:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-14 21:41:45,922 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2019-10-14 21:41:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:45,923 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-14 21:41:45,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:41:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-14 21:41:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 21:41:45,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:45,925 INFO L380 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] [2019-10-14 21:41:45,926 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:45,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1169709580, now seen corresponding path program 1 times [2019-10-14 21:41:45,928 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:45,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002805408] [2019-10-14 21:41:45,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:45,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 21:41:46,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002805408] [2019-10-14 21:41:46,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836914989] [2019-10-14 21:41:46,042 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 [2019-10-14 21:41:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:46,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:41:46,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:41:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 21:41:46,173 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:41:46,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-10-14 21:41:46,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903803398] [2019-10-14 21:41:46,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 21:41:46,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:46,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 21:41:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:41:46,177 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2019-10-14 21:41:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:46,315 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-10-14 21:41:46,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 21:41:46,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-10-14 21:41:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:46,317 INFO L225 Difference]: With dead ends: 55 [2019-10-14 21:41:46,317 INFO L226 Difference]: Without dead ends: 34 [2019-10-14 21:41:46,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:41:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-14 21:41:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-14 21:41:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 21:41:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-14 21:41:46,328 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 30 [2019-10-14 21:41:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:46,329 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-14 21:41:46,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 21:41:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-14 21:41:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 21:41:46,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:46,331 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:41:46,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:41:46,534 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:46,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1195670154, now seen corresponding path program 2 times [2019-10-14 21:41:46,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:46,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455292226] [2019-10-14 21:41:46,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:46,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:46,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 21:41:46,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455292226] [2019-10-14 21:41:46,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436301685] [2019-10-14 21:41:46,614 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 21:41:46,667 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 21:41:46,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:41:46,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:41:46,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:41:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 21:41:46,703 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:41:46,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-10-14 21:41:46,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424669280] [2019-10-14 21:41:46,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 21:41:46,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 21:41:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:41:46,705 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2019-10-14 21:41:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:46,905 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-10-14 21:41:46,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 21:41:46,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-10-14 21:41:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:46,906 INFO L225 Difference]: With dead ends: 63 [2019-10-14 21:41:46,907 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 21:41:46,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-14 21:41:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 21:41:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-10-14 21:41:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 21:41:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-14 21:41:46,915 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2019-10-14 21:41:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:46,915 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-14 21:41:46,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 21:41:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-14 21:41:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 21:41:46,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:46,917 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 21:41:47,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:41:47,122 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -187044094, now seen corresponding path program 3 times [2019-10-14 21:41:47,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:47,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104281715] [2019-10-14 21:41:47,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:47,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:47,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:41:48,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104281715] [2019-10-14 21:41:48,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228229199] [2019-10-14 21:41:48,515 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-14 21:41:48,568 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-14 21:41:48,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:41:48,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-14 21:41:48,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:41:48,706 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-14 21:41:48,706 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 21:41:48,716 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:41:48,716 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 21:41:48,717 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-10-14 21:41:50,918 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 21:41:50,928 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:41:50,928 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 36 [2019-10-14 21:41:50,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 21:41:50,955 INFO L567 ElimStorePlain]: treesize reduction 15, result has 71.7 percent of original size [2019-10-14 21:41:50,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:41:50,961 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 21:41:50,962 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:35 [2019-10-14 21:41:51,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:41:51,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:41:51,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:41:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:41:51,305 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:41:51,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 31] total 53 [2019-10-14 21:41:51,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449127559] [2019-10-14 21:41:51,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-10-14 21:41:51,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:51,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-10-14 21:41:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2577, Unknown=0, NotChecked=0, Total=2756 [2019-10-14 21:41:51,308 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 53 states. [2019-10-14 21:41:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:54,527 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2019-10-14 21:41:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-14 21:41:54,528 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 40 [2019-10-14 21:41:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:54,529 INFO L225 Difference]: With dead ends: 98 [2019-10-14 21:41:54,530 INFO L226 Difference]: Without dead ends: 92 [2019-10-14 21:41:54,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=305, Invalid=4525, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 21:41:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-14 21:41:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 58. [2019-10-14 21:41:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-14 21:41:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2019-10-14 21:41:54,557 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 40 [2019-10-14 21:41:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:54,558 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2019-10-14 21:41:54,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-10-14 21:41:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2019-10-14 21:41:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 21:41:54,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:54,563 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-14 21:41:54,780 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:41:54,780 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1685956864, now seen corresponding path program 4 times [2019-10-14 21:41:54,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:54,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419851024] [2019-10-14 21:41:54,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:54,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:54,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 21:41:54,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419851024] [2019-10-14 21:41:54,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888196097] [2019-10-14 21:41:54,879 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-10-14 21:41:54,929 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-14 21:41:54,929 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:41:54,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 21:41:54,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:41:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 21:41:54,999 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:41:54,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2019-10-14 21:41:55,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013879863] [2019-10-14 21:41:55,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 21:41:55,004 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:55,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 21:41:55,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:41:55,004 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 14 states. [2019-10-14 21:41:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:55,299 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2019-10-14 21:41:55,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 21:41:55,299 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-10-14 21:41:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:55,303 INFO L225 Difference]: With dead ends: 125 [2019-10-14 21:41:55,303 INFO L226 Difference]: Without dead ends: 75 [2019-10-14 21:41:55,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2019-10-14 21:41:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-14 21:41:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2019-10-14 21:41:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-14 21:41:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-10-14 21:41:55,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 42 [2019-10-14 21:41:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:55,315 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-10-14 21:41:55,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 21:41:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-10-14 21:41:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 21:41:55,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:55,316 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-14 21:41:55,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:41:55,520 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 19991870, now seen corresponding path program 5 times [2019-10-14 21:41:55,521 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:55,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661716218] [2019-10-14 21:41:55,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:55,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:55,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 21:41:55,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661716218] [2019-10-14 21:41:55,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780192306] [2019-10-14 21:41:55,628 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-10-14 21:41:55,698 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-10-14 21:41:55,698 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:41:55,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 21:41:55,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:41:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 21:41:55,760 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:41:55,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2019-10-14 21:41:55,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155226684] [2019-10-14 21:41:55,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 21:41:55,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:41:55,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 21:41:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:41:55,767 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 14 states. [2019-10-14 21:41:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:41:56,084 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2019-10-14 21:41:56,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 21:41:56,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2019-10-14 21:41:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:41:56,087 INFO L225 Difference]: With dead ends: 72 [2019-10-14 21:41:56,087 INFO L226 Difference]: Without dead ends: 55 [2019-10-14 21:41:56,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2019-10-14 21:41:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-14 21:41:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2019-10-14 21:41:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-14 21:41:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-10-14 21:41:56,095 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 44 [2019-10-14 21:41:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:41:56,096 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-10-14 21:41:56,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 21:41:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-10-14 21:41:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-14 21:41:56,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:41:56,097 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:41:56,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:41:56,310 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:41:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:41:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1936263288, now seen corresponding path program 6 times [2019-10-14 21:41:56,312 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:41:56,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224372209] [2019-10-14 21:41:56,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:56,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:41:56,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:41:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:41:57,419 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2019-10-14 21:41:57,582 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2019-10-14 21:41:58,120 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-10-14 21:41:58,265 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-10-14 21:41:58,581 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-10-14 21:42:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:42:00,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224372209] [2019-10-14 21:42:00,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052400292] [2019-10-14 21:42:00,687 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2019-10-14 21:42:00,747 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-10-14 21:42:00,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:42:00,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 70 conjunts are in the unsatisfiable core [2019-10-14 21:42:00,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:42:00,874 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-14 21:42:00,874 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 21:42:00,882 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:42:00,883 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 21:42:00,883 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-10-14 21:42:03,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:03,178 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 21:42:03,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:03,204 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:42:03,205 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 59 [2019-10-14 21:42:03,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,213 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-14 21:42:03,255 INFO L567 ElimStorePlain]: treesize reduction 46, result has 37.0 percent of original size [2019-10-14 21:42:03,257 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 21:42:03,257 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:22 [2019-10-14 21:42:03,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:42:03,599 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:42:03,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 36] total 77 [2019-10-14 21:42:03,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833614460] [2019-10-14 21:42:03,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 77 states [2019-10-14 21:42:03,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:42:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2019-10-14 21:42:03,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=5281, Unknown=0, NotChecked=0, Total=5852 [2019-10-14 21:42:03,603 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 77 states. [2019-10-14 21:42:05,134 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-10-14 21:42:06,926 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 32 [2019-10-14 21:42:07,193 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2019-10-14 21:42:08,015 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2019-10-14 21:42:08,376 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2019-10-14 21:42:10,479 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 25 [2019-10-14 21:42:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:42:13,561 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2019-10-14 21:42:13,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-10-14 21:42:13,562 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 50 [2019-10-14 21:42:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:42:13,564 INFO L225 Difference]: With dead ends: 132 [2019-10-14 21:42:13,564 INFO L226 Difference]: Without dead ends: 100 [2019-10-14 21:42:13,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5250 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1564, Invalid=14186, Unknown=0, NotChecked=0, Total=15750 [2019-10-14 21:42:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-14 21:42:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2019-10-14 21:42:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-14 21:42:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2019-10-14 21:42:13,582 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 50 [2019-10-14 21:42:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:42:13,582 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2019-10-14 21:42:13,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 77 states. [2019-10-14 21:42:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2019-10-14 21:42:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 21:42:13,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:42:13,584 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:42:13,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:42:13,788 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:42:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:42:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash 155810740, now seen corresponding path program 7 times [2019-10-14 21:42:13,788 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:42:13,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252519309] [2019-10-14 21:42:13,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:13,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:13,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:42:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 21:42:13,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252519309] [2019-10-14 21:42:13,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597124864] [2019-10-14 21:42:13,908 INFO L92 rtionOrderModulation]: Changing assertion order to 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 [2019-10-14 21:42:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:13,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 21:42:13,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:42:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 21:42:14,072 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:42:14,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2019-10-14 21:42:14,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099196741] [2019-10-14 21:42:14,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 21:42:14,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:42:14,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 21:42:14,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-10-14 21:42:14,076 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 17 states. [2019-10-14 21:42:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:42:14,721 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2019-10-14 21:42:14,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-14 21:42:14,721 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2019-10-14 21:42:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:42:14,723 INFO L225 Difference]: With dead ends: 151 [2019-10-14 21:42:14,724 INFO L226 Difference]: Without dead ends: 105 [2019-10-14 21:42:14,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 21:42:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-14 21:42:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2019-10-14 21:42:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-10-14 21:42:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2019-10-14 21:42:14,738 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 54 [2019-10-14 21:42:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:42:14,738 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2019-10-14 21:42:14,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-14 21:42:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2019-10-14 21:42:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 21:42:14,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:42:14,740 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:42:14,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:42:14,944 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:42:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:42:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2146716148, now seen corresponding path program 8 times [2019-10-14 21:42:14,945 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:42:14,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313898679] [2019-10-14 21:42:14,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:14,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:14,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:42:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 21:42:15,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313898679] [2019-10-14 21:42:15,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558987884] [2019-10-14 21:42:15,073 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:42:15,138 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 21:42:15,139 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:42:15,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 21:42:15,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:42:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-14 21:42:15,204 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:42:15,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 18 [2019-10-14 21:42:15,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781227221] [2019-10-14 21:42:15,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-14 21:42:15,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:42:15,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-14 21:42:15,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2019-10-14 21:42:15,205 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 18 states. [2019-10-14 21:42:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:42:15,527 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2019-10-14 21:42:15,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 21:42:15,527 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2019-10-14 21:42:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:42:15,528 INFO L225 Difference]: With dead ends: 137 [2019-10-14 21:42:15,528 INFO L226 Difference]: Without dead ends: 66 [2019-10-14 21:42:15,530 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2019-10-14 21:42:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-14 21:42:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2019-10-14 21:42:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-14 21:42:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-10-14 21:42:15,538 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 54 [2019-10-14 21:42:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:42:15,539 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2019-10-14 21:42:15,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-14 21:42:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2019-10-14 21:42:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 21:42:15,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:42:15,540 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:42:15,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:42:15,744 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:42:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:42:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1133377938, now seen corresponding path program 9 times [2019-10-14 21:42:15,745 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:42:15,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10551702] [2019-10-14 21:42:15,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:15,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:42:15,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:42:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:16,900 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-10-14 21:42:17,050 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2019-10-14 21:42:17,220 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-10-14 21:42:17,408 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-10-14 21:42:17,574 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-10-14 21:42:17,974 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2019-10-14 21:42:18,153 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-10-14 21:42:18,336 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-10-14 21:42:18,542 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-10-14 21:42:18,755 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-10-14 21:42:18,990 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-10-14 21:42:19,188 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-10-14 21:42:19,385 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-10-14 21:42:19,541 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-10-14 21:42:19,829 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-10-14 21:42:20,005 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-10-14 21:42:20,179 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-10-14 21:42:20,360 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-10-14 21:42:20,547 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-10-14 21:42:20,733 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-10-14 21:42:20,927 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-10-14 21:42:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:42:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:42:22,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10551702] [2019-10-14 21:42:22,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436865053] [2019-10-14 21:42:22,313 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:42:22,376 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-14 21:42:22,376 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:42:22,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 86 conjunts are in the unsatisfiable core [2019-10-14 21:42:22,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:42:22,424 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-14 21:42:22,425 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 21:42:22,434 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:42:22,434 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 21:42:22,435 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-10-14 21:42:27,373 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:27,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:27,375 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:27,382 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 21:42:27,383 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 21:42:27,408 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 21:42:27,409 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 69 [2019-10-14 21:42:27,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,415 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-14 21:42:27,466 INFO L567 ElimStorePlain]: treesize reduction 56, result has 39.1 percent of original size [2019-10-14 21:42:27,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,469 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 21:42:27,469 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:20 [2019-10-14 21:42:27,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:42:27,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms