/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:52:50,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:52:50,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:52:50,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:52:50,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:52:50,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:52:50,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:52:50,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:52:50,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:52:50,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:52:50,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:52:50,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:52:50,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:52:50,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:52:50,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:52:50,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:52:50,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:52:50,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:52:50,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:52:50,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:52:50,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:52:50,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:52:50,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:52:50,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:52:50,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:52:50,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:52:50,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:52:50,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:52:50,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:52:50,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:52:50,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:52:50,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:52:50,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:52:50,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:52:50,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:52:50,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:52:50,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:52:50,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:52:50,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:52:50,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:52:50,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:52:50,465 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 [2020-09-24 21:52:50,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:52:50,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:52:50,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:52:50,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:52:50,520 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:52:50,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:52:50,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:52:50,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:52:50,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:52:50,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:52:50,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:52:50,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:52:50,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:52:50,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:52:50,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:52:50,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:52:50,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:52:50,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:52:50,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:52:50,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:52:50,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:52:50,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:50,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:52:50,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:52:50,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:52:50,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:52:50,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:52:50,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:52:50,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:52:50,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:52:51,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:52:51,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:52:51,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:52:51,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:52:51,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:52:51,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-09-24 21:52:51,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24686f3a/31a7805ef1514836bfbfb96c93e2d4fc/FLAG078e739ec [2020-09-24 21:52:51,608 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:52:51,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq1.c [2020-09-24 21:52:51,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24686f3a/31a7805ef1514836bfbfb96c93e2d4fc/FLAG078e739ec [2020-09-24 21:52:51,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c24686f3a/31a7805ef1514836bfbfb96c93e2d4fc [2020-09-24 21:52:51,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:52:51,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:52:51,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:51,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:52:52,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:52:52,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:51" (1/1) ... [2020-09-24 21:52:52,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52, skipping insertion in model container [2020-09-24 21:52:52,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:51" (1/1) ... [2020-09-24 21:52:52,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:52:52,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:52:52,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:52,324 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:52:52,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:52,357 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:52:52,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52 WrapperNode [2020-09-24 21:52:52,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:52,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:52:52,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:52:52,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:52:52,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (1/1) ... [2020-09-24 21:52:52,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:52:52,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:52:52,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:52:52,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:52:52,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (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 [2020-09-24 21:52:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:52:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:52:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:52:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:52:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:52:52,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:52:52,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:52:52,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:52 BoogieIcfgContainer [2020-09-24 21:52:52,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:52:52,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:52:52,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:52:52,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:52:52,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:52:51" (1/3) ... [2020-09-24 21:52:52,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3260cd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:52, skipping insertion in model container [2020-09-24 21:52:52,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:52" (2/3) ... [2020-09-24 21:52:52,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3260cd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:52, skipping insertion in model container [2020-09-24 21:52:52,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:52" (3/3) ... [2020-09-24 21:52:52,823 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-09-24 21:52:52,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:52:52,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:52:52,889 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:52:52,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:52:52,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:52:52,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:52:52,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:52:52,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:52:52,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:52:52,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:52:52,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:52:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 21:52:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 21:52:52,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:52,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:52,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash 635191250, now seen corresponding path program 1 times [2020-09-24 21:52:52,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:52,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444427259] [2020-09-24 21:52:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:53,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:53,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 21:52:53,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:52:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 21:52:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:52:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:52:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:52:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:52:53,850 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-09-24 21:52:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:53,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:53,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:52:53,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:53,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444427259] [2020-09-24 21:52:53,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:52:53,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:52:53,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649780509] [2020-09-24 21:52:53,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:52:53,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:52:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:52:53,923 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-09-24 21:52:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:54,089 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-09-24 21:52:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:52:54,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-24 21:52:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:54,105 INFO L225 Difference]: With dead ends: 88 [2020-09-24 21:52:54,105 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 21:52:54,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:52:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 21:52:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2020-09-24 21:52:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 21:52:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 21:52:54,167 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 15 [2020-09-24 21:52:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:54,167 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 21:52:54,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:52:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 21:52:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 21:52:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:54,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:54,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:52:54,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -82059580, now seen corresponding path program 1 times [2020-09-24 21:52:54,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:54,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773792429] [2020-09-24 21:52:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:54,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:54,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:52:54,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-24 21:52:54,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:52:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:52:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:52:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:54,977 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-09-24 21:52:54,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:55,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:55,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773792429] [2020-09-24 21:52:55,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:55,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:52:55,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676037088] [2020-09-24 21:52:55,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:52:55,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:55,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:52:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:52:55,025 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-09-24 21:52:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:55,120 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-09-24 21:52:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:52:55,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 21:52:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:55,124 INFO L225 Difference]: With dead ends: 53 [2020-09-24 21:52:55,124 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 21:52:55,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:52:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 21:52:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-09-24 21:52:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 21:52:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-24 21:52:55,141 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 26 [2020-09-24 21:52:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:55,142 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-24 21:52:55,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:52:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-24 21:52:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 21:52:55,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:55,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:55,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:52:55,144 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash -697570748, now seen corresponding path program 1 times [2020-09-24 21:52:55,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:55,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730382697] [2020-09-24 21:52:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:55,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:55,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:52:55,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:55,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 21:52:55,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:52:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:52:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:52:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:55,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:55,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:55,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:55,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730382697] [2020-09-24 21:52:55,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:55,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:52:55,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692161860] [2020-09-24 21:52:55,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:52:55,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:52:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:52:55,554 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 8 states. [2020-09-24 21:52:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:55,662 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-09-24 21:52:55,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:52:55,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 21:52:55,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:55,665 INFO L225 Difference]: With dead ends: 83 [2020-09-24 21:52:55,665 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 21:52:55,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:52:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 21:52:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-09-24 21:52:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 21:52:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-09-24 21:52:55,676 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 26 [2020-09-24 21:52:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:55,677 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-09-24 21:52:55,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:52:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-09-24 21:52:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 21:52:55,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:55,679 INFO L422 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, 1, 1, 1, 1] [2020-09-24 21:52:55,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:52:55,679 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1924042729, now seen corresponding path program 1 times [2020-09-24 21:52:55,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695638838] [2020-09-24 21:52:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:55,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 21:52:55,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 21:52:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:52:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:52:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:52:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:56,320 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-09-24 21:52:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:56,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:56,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:56,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:56,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695638838] [2020-09-24 21:52:56,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:56,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:52:56,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367499730] [2020-09-24 21:52:56,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:52:56,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:52:56,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:52:56,360 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 10 states. [2020-09-24 21:52:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:56,483 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-09-24 21:52:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:52:56,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 21:52:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:56,485 INFO L225 Difference]: With dead ends: 96 [2020-09-24 21:52:56,486 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 21:52:56,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:52:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 21:52:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2020-09-24 21:52:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 21:52:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-09-24 21:52:56,494 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2020-09-24 21:52:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:56,494 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-09-24 21:52:56,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:52:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-09-24 21:52:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 21:52:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:56,496 INFO L422 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, 1, 1, 1, 1] [2020-09-24 21:52:56,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:52:56,496 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -726257687, now seen corresponding path program 2 times [2020-09-24 21:52:56,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:56,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685651061] [2020-09-24 21:52:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 21:52:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 21:52:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:52:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:52:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:52:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:57,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:57,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:57,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:57,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:57,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:57,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685651061] [2020-09-24 21:52:57,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:57,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:52:57,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418767651] [2020-09-24 21:52:57,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:52:57,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:52:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:52:57,110 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 10 states. [2020-09-24 21:52:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:57,256 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-09-24 21:52:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:52:57,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 21:52:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:57,257 INFO L225 Difference]: With dead ends: 53 [2020-09-24 21:52:57,257 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:52:57,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:52:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:52:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:52:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:52:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:52:57,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-24 21:52:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:57,260 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:52:57,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:52:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:52:57,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:52:57,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:52:57,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:52:57,430 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:52:57,430 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:57,430 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:57,431 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:52:57,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:52:57,431 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:57,431 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2020-09-24 21:52:57,431 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 21:52:57,431 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 21:52:57,432 INFO L264 CegarLoopResult]: At program point L15-4(lines 14 20) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~x~0 main_~w~0) (<= main_~z~0 main_~y~0) (<= main_~w~0 main_~x~0)) [2020-09-24 21:52:57,433 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,433 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,434 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 21:52:57,435 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 21:52:57,435 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-24 21:52:57,435 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 21:52:57,435 INFO L264 CegarLoopResult]: At program point L14-4(lines 14 20) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296))) (.cse3 (+ main_~x~0 (* 4294967296 (div main_~w~0 4294967296)))) (.cse2 (* 4294967296 (div main_~x~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= (+ main_~w~0 .cse2) .cse3) (< .cse3 (+ main_~w~0 .cse2 1)) (<= main_~z~0 main_~y~0) (<= main_~w~0 main_~x~0))) [2020-09-24 21:52:57,435 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 21:52:57,436 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 21:52:57,436 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 21:52:57,436 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:57,436 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 21:52:57,436 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 21:52:57,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:52:57 BoogieIcfgContainer [2020-09-24 21:52:57,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:52:57,462 INFO L168 Benchmark]: Toolchain (without parser) took 5471.67 ms. Allocated memory was 144.2 MB in the beginning and 252.2 MB in the end (delta: 108.0 MB). Free memory was 99.4 MB in the beginning and 159.3 MB in the end (delta: -59.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:57,463 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:52:57,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.70 ms. Allocated memory is still 144.2 MB. Free memory was 98.8 MB in the beginning and 89.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:57,466 INFO L168 Benchmark]: Boogie Preprocessor took 125.59 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 89.2 MB in the beginning and 179.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:57,467 INFO L168 Benchmark]: RCFGBuilder took 325.42 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 166.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:57,468 INFO L168 Benchmark]: TraceAbstraction took 4649.06 ms. Allocated memory was 200.8 MB in the beginning and 252.2 MB in the end (delta: 51.4 MB). Free memory was 165.6 MB in the beginning and 159.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:57,472 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.70 ms. Allocated memory is still 144.2 MB. Free memory was 98.8 MB in the beginning and 89.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.59 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 89.2 MB in the beginning and 179.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.42 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 166.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4649.06 ms. Allocated memory was 200.8 MB in the beginning and 252.2 MB in the end (delta: 51.4 MB). Free memory was 165.6 MB in the beginning and 159.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: ((y <= z && x <= w) && z <= y) && w <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 188 SDslu, 607 SDs, 0 SdLazy, 302 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, 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, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 19 NumberOfFragments, 87 HoareAnnotationTreeSize, 12 FomulaSimplifications, 230 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 94307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/12 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...