/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:45:02,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:45:02,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:45:02,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:45:02,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:45:02,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:45:02,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:45:02,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:45:02,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:45:02,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:45:02,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:45:02,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:45:02,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:45:02,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:45:02,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:45:02,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:45:02,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:45:02,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:45:02,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:45:02,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:45:02,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:45:02,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:45:02,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:45:02,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:45:02,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:45:02,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:45:02,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:45:02,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:45:02,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:45:02,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:45:02,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:45:02,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:45:02,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:45:02,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:45:02,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:45:02,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:45:02,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:45:02,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:45:02,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:45:02,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:45:02,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:45:02,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:45:02,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:45:02,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:45:02,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:45:02,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:45:02,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:45:02,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:45:02,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:45:02,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:45:02,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:45:02,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:45:02,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:45:02,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:45:02,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:45:02,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:45:02,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:45:02,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:45:02,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:45:02,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:45:02,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:45:02,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:45:02,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:45:02,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:45:02,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:45:02,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:45:02,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:45:02,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:45:02,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:45:02,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:45:02,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:45:02,858 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:45:02,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-04 13:45:02,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0372a085f/12f6150ddef34467a9d0e9469db8d437/FLAG2164b226d [2020-09-04 13:45:03,473 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:45:03,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-04 13:45:03,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0372a085f/12f6150ddef34467a9d0e9469db8d437/FLAG2164b226d [2020-09-04 13:45:03,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0372a085f/12f6150ddef34467a9d0e9469db8d437 [2020-09-04 13:45:03,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:45:03,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:45:03,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:03,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:45:03,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:45:03,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:03" (1/1) ... [2020-09-04 13:45:03,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6220607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:03, skipping insertion in model container [2020-09-04 13:45:03,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:03" (1/1) ... [2020-09-04 13:45:03,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:45:03,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:45:04,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:04,146 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:45:04,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:04,188 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:45:04,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04 WrapperNode [2020-09-04 13:45:04,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:04,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:45:04,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:45:04,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:45:04,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... [2020-09-04 13:45:04,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:45:04,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:45:04,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:45:04,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:45:04,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:45:04,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:45:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:45:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:45:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:45:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:45:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:45:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:45:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:45:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:45:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:45:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:45:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:45:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:45:04,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:45:04,672 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:45:04,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:04 BoogieIcfgContainer [2020-09-04 13:45:04,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:45:04,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:45:04,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:45:04,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:45:04,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:45:03" (1/3) ... [2020-09-04 13:45:04,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987b1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:04, skipping insertion in model container [2020-09-04 13:45:04,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:04" (2/3) ... [2020-09-04 13:45:04,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987b1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:04, skipping insertion in model container [2020-09-04 13:45:04,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:04" (3/3) ... [2020-09-04 13:45:04,687 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-09-04 13:45:04,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:45:04,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:45:04,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:45:04,833 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:45:04,834 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:45:04,834 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:45:04,834 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:45:04,834 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:45:04,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:45:04,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:45:04,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:45:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-04 13:45:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:45:04,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:04,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:04,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-09-04 13:45:04,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:04,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262905807] [2020-09-04 13:45:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:05,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:05,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262905807] [2020-09-04 13:45:05,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:05,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:45:05,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909141423] [2020-09-04 13:45:05,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:45:05,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:05,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:45:05,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:45:05,083 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-09-04 13:45:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:05,160 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-09-04 13:45:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:45:05,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-04 13:45:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:05,173 INFO L225 Difference]: With dead ends: 37 [2020-09-04 13:45:05,173 INFO L226 Difference]: Without dead ends: 18 [2020-09-04 13:45:05,178 INFO L675 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 [2020-09-04 13:45:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-04 13:45:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-04 13:45:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-04 13:45:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-09-04 13:45:05,228 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-09-04 13:45:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:05,229 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-09-04 13:45:05,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:45:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-09-04 13:45:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:45:05,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:05,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:05,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:45:05,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-09-04 13:45:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478631969] [2020-09-04 13:45:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:05,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478631969] [2020-09-04 13:45:05,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:05,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:45:05,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925750391] [2020-09-04 13:45:05,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:45:05,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:45:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:45:05,756 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-09-04 13:45:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:14,323 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2020-09-04 13:45:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:45:14,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-09-04 13:45:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:14,326 INFO L225 Difference]: With dead ends: 28 [2020-09-04 13:45:14,326 INFO L226 Difference]: Without dead ends: 23 [2020-09-04 13:45:14,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:45:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-04 13:45:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-09-04 13:45:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 13:45:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-09-04 13:45:14,335 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-09-04 13:45:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:14,336 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-09-04 13:45:14,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:45:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-09-04 13:45:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:45:14,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:14,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:14,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:45:14,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:14,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-09-04 13:45:14,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:14,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126129224] [2020-09-04 13:45:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:14,926 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-09-04 13:45:15,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:15,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126129224] [2020-09-04 13:45:15,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038344551] [2020-09-04 13:45:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:15,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-09-04 13:45:15,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:15,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:45:15,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2020-09-04 13:45:15,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749436801] [2020-09-04 13:45:15,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 13:45:15,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:15,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 13:45:15,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-04 13:45:15,725 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 20 states. [2020-09-04 13:45:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:16,315 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-09-04 13:45:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:45:16,316 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-09-04 13:45:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:16,318 INFO L225 Difference]: With dead ends: 40 [2020-09-04 13:45:16,319 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:45:16,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2020-09-04 13:45:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:45:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 13:45:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:45:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-09-04 13:45:16,333 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2020-09-04 13:45:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:16,333 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-09-04 13:45:16,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 13:45:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-09-04 13:45:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:45:16,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:16,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:16,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:45:16,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-09-04 13:45:16,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:16,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122975216] [2020-09-04 13:45:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:17,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122975216] [2020-09-04 13:45:17,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377636818] [2020-09-04 13:45:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 26 conjunts are in the unsatisfiable core [2020-09-04 13:45:17,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:17,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:45:17,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2020-09-04 13:45:17,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51236735] [2020-09-04 13:45:17,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 13:45:17,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:17,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 13:45:17,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-09-04 13:45:17,954 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 24 states. [2020-09-04 13:45:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:18,631 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-09-04 13:45:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 13:45:18,632 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-09-04 13:45:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:18,634 INFO L225 Difference]: With dead ends: 46 [2020-09-04 13:45:18,634 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:45:18,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 13:45:18,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:45:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 13:45:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:45:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-04 13:45:18,642 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-09-04 13:45:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:18,642 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-04 13:45:18,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 13:45:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-04 13:45:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:45:18,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:18,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:18,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:18,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-09-04 13:45:18,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:18,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287933056] [2020-09-04 13:45:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:19,436 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-09-04 13:45:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:19,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287933056] [2020-09-04 13:45:19,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560233622] [2020-09-04 13:45:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:19,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 30 conjunts are in the unsatisfiable core [2020-09-04 13:45:19,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:20,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:45:20,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2020-09-04 13:45:20,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134444597] [2020-09-04 13:45:20,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 13:45:20,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:20,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 13:45:20,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2020-09-04 13:45:20,246 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 25 states. [2020-09-04 13:45:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:21,291 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-09-04 13:45:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 13:45:21,291 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 27 [2020-09-04 13:45:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:21,292 INFO L225 Difference]: With dead ends: 48 [2020-09-04 13:45:21,292 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:45:21,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 13:45:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:45:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:45:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:45:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:45:21,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-09-04 13:45:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:21,295 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:45:21,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 13:45:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:45:21,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:45:21,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:21,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:45:21,819 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-09-04 13:45:21,954 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-09-04 13:45:21,958 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:45:21,958 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-04 13:45:21,959 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:21,959 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:21,959 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-09-04 13:45:21,959 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:45:21,959 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:45:21,959 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:45:21,959 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-09-04 13:45:21,960 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-09-04 13:45:21,961 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-09-04 13:45:21,961 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-09-04 13:45:21,961 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (let ((.cse0 (<= main_~l~0 .cse3)) (.cse1 (= main_~i~0 0)) (.cse2 (= main_~j~0 0)) (.cse4 (= main_~v4~0 0))) (or (and (= main_~v3~0 0) .cse0 .cse1 .cse2 (<= .cse3 0) .cse4 (<= 0 main_~l~0)) (and .cse0 (<= .cse3 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 2) (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 main_~n~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (= main_~k~0 0) (= main_~l~0 1) .cse1 .cse2 (< 0 (mod main_~n~0 4294967296)) .cse4 (= main_~v3~0 1))))) [2020-09-04 13:45:21,961 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (or (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 2) (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 main_~n~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse1 (div .cse0 4294967296))) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse2 (* 4294967296 .cse1))) (and (< 0 (+ .cse1 1)) (<= (+ main_~l~0 .cse2) .cse3) (< .cse3 (+ main_~l~0 .cse2 1))))))) [2020-09-04 13:45:21,962 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-09-04 13:45:21,962 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-09-04 13:45:21,962 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-04 13:45:21,962 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:45:21,962 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:45:21,962 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:45:21,963 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:45:21,963 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:45:21,963 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:45:21,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:45:21 BoogieIcfgContainer [2020-09-04 13:45:21,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:45:21,985 INFO L168 Benchmark]: Toolchain (without parser) took 18165.69 ms. Allocated memory was 140.5 MB in the beginning and 274.2 MB in the end (delta: 133.7 MB). Free memory was 104.4 MB in the beginning and 147.4 MB in the end (delta: -43.0 MB). Peak memory consumption was 90.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,986 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,988 INFO L168 Benchmark]: Boogie Preprocessor took 128.79 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,989 INFO L168 Benchmark]: RCFGBuilder took 358.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,990 INFO L168 Benchmark]: TraceAbstraction took 17305.06 ms. Allocated memory was 202.9 MB in the beginning and 274.2 MB in the end (delta: 71.3 MB). Free memory was 166.3 MB in the beginning and 147.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 90.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:21,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.79 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17305.06 ms. Allocated memory was 202.9 MB in the beginning and 274.2 MB in the end (delta: 71.3 MB). Free memory was 166.3 MB in the beginning and 147.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 90.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((((v3 == 0 && l <= i + j + k + v3 + v4) && i == 0) && j == 0) && i + j + k + v3 + v4 <= 0) && v4 == 0) && 0 <= l) || ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) && 4294967296 * (n / 4294967296) + l + 2 <= i + j + k + v3 + v4 + n)) || !(SIZE <= 20000001)) || !(20000001 <= SIZE)) || ((((((k == 0 && l == 1) && i == 0) && j == 0) && 0 < n % 4294967296) && v4 == 0) && v3 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 291 SDslu, 185 SDs, 0 SdLazy, 779 SolverSat, 104 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 215 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 55787 SizeOfPredicates, 9 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...