/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:13,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:13,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:13,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:13,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:13,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:13,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:13,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:13,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:13,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:13,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:13,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:13,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:13,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:13,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:13,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:13,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:13,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:13,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:13,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:13,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:13,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:13,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:13,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:13,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:13,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:13,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:13,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:13,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:13,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:13,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:13,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:13,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:13,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:13,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:13,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:13,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:13,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:13,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:13,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:13,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:13,514 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 [2020-09-25 03:08:13,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:13,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:13,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:13,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:13,566 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:13,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:13,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:13,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:13,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:13,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:13,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:13,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:13,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:13,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:13,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:13,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:13,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:13,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:13,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:13,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:13,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:13,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:13,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:13,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:13,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:13,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:13,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:13,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:13,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:13,573 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:08:14,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:14,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:14,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:14,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:14,064 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:14,065 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-25 03:08:14,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b0478bc/ffa1967237d94678ad01f6c45498adc3/FLAG7726c1423 [2020-09-25 03:08:14,719 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:14,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-25 03:08:14,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b0478bc/ffa1967237d94678ad01f6c45498adc3/FLAG7726c1423 [2020-09-25 03:08:15,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b0478bc/ffa1967237d94678ad01f6c45498adc3 [2020-09-25 03:08:15,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:15,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:15,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:15,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:15,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:15,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15, skipping insertion in model container [2020-09-25 03:08:15,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:15,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:15,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:15,364 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:15,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:15,413 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:15,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15 WrapperNode [2020-09-25 03:08:15,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:15,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:15,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:15,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:15,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:15,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:15,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:15,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:15,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:15,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (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 [2020-09-25 03:08:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:08:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 03:08:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:08:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:15,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:15,958 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:08:15,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:15 BoogieIcfgContainer [2020-09-25 03:08:15,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:15,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:15,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:15,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:15,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:15" (1/3) ... [2020-09-25 03:08:15,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3766701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:15, skipping insertion in model container [2020-09-25 03:08:15,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:15" (2/3) ... [2020-09-25 03:08:15,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3766701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:15, skipping insertion in model container [2020-09-25 03:08:15,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:15" (3/3) ... [2020-09-25 03:08:15,974 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-09-25 03:08:16,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:16,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:16,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:16,074 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:16,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:16,075 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:16,075 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:16,075 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:16,075 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:16,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:16,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-25 03:08:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 03:08:16,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:16,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:16,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:16,118 INFO L82 PathProgramCache]: Analyzing trace with hash -7732671, now seen corresponding path program 1 times [2020-09-25 03:08:16,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:16,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168420897] [2020-09-25 03:08:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:16,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:16,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:08:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 03:08:16,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:08:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:16,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168420897] [2020-09-25 03:08:16,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:16,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 03:08:16,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837360887] [2020-09-25 03:08:16,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 03:08:16,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 03:08:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 03:08:16,438 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-09-25 03:08:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:16,471 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-09-25 03:08:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 03:08:16,473 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-25 03:08:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:16,484 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:08:16,484 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 03:08:16,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 03:08:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 03:08:16,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 03:08:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:08:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-09-25 03:08:16,544 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 12 [2020-09-25 03:08:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:16,545 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-09-25 03:08:16,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 03:08:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-09-25 03:08:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 03:08:16,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:16,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:16,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:16,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash -87155477, now seen corresponding path program 1 times [2020-09-25 03:08:16,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:16,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358019886] [2020-09-25 03:08:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:08:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 03:08:16,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:08:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:16,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:16,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:08:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:16,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358019886] [2020-09-25 03:08:16,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:16,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:08:16,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023741149] [2020-09-25 03:08:16,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:08:16,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:16,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:08:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:08:16,831 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 3 states. [2020-09-25 03:08:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:16,943 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 03:08:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:08:16,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-25 03:08:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:16,945 INFO L225 Difference]: With dead ends: 55 [2020-09-25 03:08:16,946 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 03:08:16,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:08:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 03:08:16,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-25 03:08:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 03:08:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-09-25 03:08:16,957 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 12 [2020-09-25 03:08:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:16,957 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-09-25 03:08:16,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:08:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-09-25 03:08:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:16,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:16,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:16,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:16,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:16,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1575516068, now seen corresponding path program 1 times [2020-09-25 03:08:16,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:16,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921817774] [2020-09-25 03:08:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:08:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 03:08:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-09-25 03:08:18,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:08:21,498 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 4294967296 (div c_main_~y~0 4294967296)))) (or (<= (+ c_main_~y~0 1) .cse0) (let ((.cse37 (div c_main_~y~0 2))) (let ((.cse21 (* 2 .cse37)) (.cse19 (div c_main_~x~0 2))) (let ((.cse35 (* .cse37 (- 2))) (.cse36 (* .cse19 (- 2))) (.cse13 (= c_main_~y~0 .cse21))) (let ((.cse24 (< c_main_~y~0 .cse0)) (.cse25 (not .cse13)) (.cse5 (div (+ .cse36 c_main_~x~0 (- 2)) 4294967296)) (.cse27 (div (+ c_main_~y~0 .cse35 (- 2)) 4294967296)) (.cse1 (div (+ .cse36 c_main_~x~0) 4294967296)) (.cse31 (* 2 .cse19)) (.cse28 (div (+ c_main_~y~0 .cse35) 4294967296)) (.cse34 (* 4294967296 (div c_main_~x~0 4294967296)))) (let ((.cse7 (<= .cse34 c_main_~x~0)) (.cse29 (* 4294967296 .cse28)) (.cse6 (= c_main_~x~0 .cse31)) (.cse32 (* 4294967296 .cse1)) (.cse30 (* 4294967296 .cse27)) (.cse33 (* 4294967296 .cse5)) (.cse14 (<= .cse0 c_main_~y~0)) (.cse15 (and .cse24 .cse25))) (let ((.cse20 (and (or .cse13 (< 0 .cse27) .cse14) (or (< 0 .cse28) .cse15))) (.cse9 (+ .cse31 c_main_~y~0 .cse33 1)) (.cse8 (+ c_main_~x~0 .cse21 .cse30)) (.cse11 (+ .cse31 .cse32 c_main_~y~0)) (.cse10 (+ c_main_~x~0 .cse21 .cse30 1)) (.cse3 (< c_main_~x~0 .cse34)) (.cse4 (not .cse6)) (.cse17 (+ .cse31 c_main_~y~0 .cse33 3)) (.cse18 (+ .cse31 .cse32 c_main_~y~0 1)) (.cse16 (+ c_main_~x~0 .cse29 .cse21)) (.cse2 (or .cse6 .cse7))) (and (or (and (<= (+ .cse1 1) 0) .cse2) (and .cse3 .cse4 (<= (+ .cse5 1) 0)) (let ((.cse12 (and .cse3 .cse4))) (and (or (and (or .cse6 .cse7 (< .cse8 .cse9)) (or (< .cse10 .cse11) .cse12)) .cse13 .cse14) (or .cse15 (and (or .cse6 .cse7 (< .cse16 .cse17)) (or (< .cse16 .cse18) .cse12))))) (and (or (<= 20 c_main_~x~0) (< 9 .cse19)) (or (<= c_main_~x~0 20) .cse20 (<= .cse19 9)))) (let ((.cse23 (or .cse13 .cse14))) (or (let ((.cse26 (+ .cse30 .cse21)) (.cse22 (+ .cse29 .cse21))) (and (or (<= c_main_~y~0 .cse21) (and (<= c_main_~y~0 .cse22) .cse23) (and .cse24 .cse25 (<= c_main_~y~0 .cse26)) .cse20) (or (and .cse24 (<= .cse26 c_main_~y~0) .cse25) (and .cse24 .cse25 (<= .cse27 0)) (and (<= .cse22 c_main_~y~0) .cse23) (and (<= .cse28 0) .cse23)))) (and .cse24 .cse25 (or (and .cse3 (<= .cse9 .cse8) .cse4) (and (<= .cse11 .cse10) .cse2))) .cse13 (and (or (and .cse3 .cse4 (<= .cse17 .cse16)) (and (<= .cse18 .cse16) .cse2)) .cse23)))))))))))) is different from true [2020-09-25 03:08:21,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:21,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:21,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:21,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-09-25 03:08:21,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921817774] [2020-09-25 03:08:21,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:21,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:08:21,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792806095] [2020-09-25 03:08:21,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:08:21,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:21,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:08:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=183, Unknown=1, NotChecked=26, Total=240 [2020-09-25 03:08:21,590 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 16 states. [2020-09-25 03:08:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:23,077 INFO L93 Difference]: Finished difference Result 195 states and 260 transitions. [2020-09-25 03:08:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:08:23,078 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-09-25 03:08:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:23,084 INFO L225 Difference]: With dead ends: 195 [2020-09-25 03:08:23,084 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 03:08:23,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=34, Invalid=209, Unknown=1, NotChecked=28, Total=272 [2020-09-25 03:08:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 03:08:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-09-25 03:08:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 03:08:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2020-09-25 03:08:23,106 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 155 transitions. Word has length 33 [2020-09-25 03:08:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:23,106 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 155 transitions. [2020-09-25 03:08:23,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:08:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 155 transitions. [2020-09-25 03:08:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:23,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:23,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:23,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:23,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:23,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1539703076, now seen corresponding path program 1 times [2020-09-25 03:08:23,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:23,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147884923] [2020-09-25 03:08:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:08:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-09-25 03:08:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-09-25 03:08:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:26,331 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 40 DAG size of output: 19 [2020-09-25 03:08:26,742 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 18 [2020-09-25 03:08:33,307 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 120 DAG size of output: 28 [2020-09-25 03:08:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:33,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:33,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:33,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147884923] [2020-09-25 03:08:33,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:33,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:08:33,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7823809] [2020-09-25 03:08:33,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:08:33,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:08:33,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=103, Unknown=2, NotChecked=0, Total=132 [2020-09-25 03:08:33,364 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. Second operand 12 states. [2020-09-25 03:08:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:34,332 INFO L93 Difference]: Finished difference Result 246 states and 305 transitions. [2020-09-25 03:08:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:08:34,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-25 03:08:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:34,335 INFO L225 Difference]: With dead ends: 246 [2020-09-25 03:08:34,335 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 03:08:34,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=35, Invalid=145, Unknown=2, NotChecked=0, Total=182 [2020-09-25 03:08:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 03:08:34,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 115. [2020-09-25 03:08:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 03:08:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2020-09-25 03:08:34,350 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 141 transitions. Word has length 33 [2020-09-25 03:08:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:34,351 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 141 transitions. [2020-09-25 03:08:34,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:08:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 141 transitions. [2020-09-25 03:08:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:34,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:34,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:34,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:08:34,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash -243170692, now seen corresponding path program 1 times [2020-09-25 03:08:34,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:34,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304972820] [2020-09-25 03:08:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:08:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-09-25 03:08:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-09-25 03:08:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:36,744 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 10 [2020-09-25 03:08:36,898 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 11 [2020-09-25 03:08:37,297 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 25 [2020-09-25 03:08:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:37,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:37,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:37,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304972820] [2020-09-25 03:08:37,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:37,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:08:37,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955982473] [2020-09-25 03:08:37,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:08:37,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:08:37,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:08:37,343 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. Second operand 11 states. [2020-09-25 03:08:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:37,949 INFO L93 Difference]: Finished difference Result 230 states and 296 transitions. [2020-09-25 03:08:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:08:37,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-25 03:08:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:37,951 INFO L225 Difference]: With dead ends: 230 [2020-09-25 03:08:37,951 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 03:08:37,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:08:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 03:08:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 87. [2020-09-25 03:08:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 03:08:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2020-09-25 03:08:37,965 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 33 [2020-09-25 03:08:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:37,965 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2020-09-25 03:08:37,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:08:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2020-09-25 03:08:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:37,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:37,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:08:37,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash 625868124, now seen corresponding path program 1 times [2020-09-25 03:08:37,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:37,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761594173] [2020-09-25 03:08:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:08:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:08:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 03:08:38,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,946 WARN L193 SmtUtils]: Spent 8.53 s on a formula simplification. DAG size of input: 136 DAG size of output: 29 [2020-09-25 03:08:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:51,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:51,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:51,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761594173] [2020-09-25 03:08:51,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:51,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:08:51,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608898651] [2020-09-25 03:08:51,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:08:51,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:51,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:08:51,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2020-09-25 03:08:51,985 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand 11 states. [2020-09-25 03:08:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:52,523 INFO L93 Difference]: Finished difference Result 177 states and 217 transitions. [2020-09-25 03:08:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:08:52,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-25 03:08:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:52,525 INFO L225 Difference]: With dead ends: 177 [2020-09-25 03:08:52,525 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 03:08:52,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2020-09-25 03:08:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 03:08:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2020-09-25 03:08:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 03:08:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-09-25 03:08:52,535 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 33 [2020-09-25 03:08:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:52,536 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-09-25 03:08:52,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:08:52,536 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-09-25 03:08:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:52,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:52,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:52,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:08:52,538 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1873408444, now seen corresponding path program 1 times [2020-09-25 03:08:52,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:52,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436931340] [2020-09-25 03:08:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:53,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:08:53,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 03:08:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-09-25 03:08:53,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:08:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:55,782 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 55 DAG size of output: 10 [2020-09-25 03:08:57,953 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse18 (div c_main_~x~0 2))) (let ((.cse35 (* 4294967296 (div c_main_~x~0 4294967296))) (.cse19 (* 2 .cse18))) (let ((.cse34 (* .cse18 (- 2))) (.cse11 (= c_main_~x~0 .cse19)) (.cse12 (<= .cse35 c_main_~x~0))) (let ((.cse2 (or .cse11 .cse12)) (.cse3 (< c_main_~x~0 .cse35)) (.cse4 (not .cse11)) (.cse0 (* 4294967296 (div c_main_~y~0 4294967296))) (.cse5 (div (+ .cse34 c_main_~x~0 (- 2)) 4294967296)) (.cse1 (div (+ .cse34 c_main_~x~0) 4294967296))) (or (<= (+ c_main_~y~0 1) .cse0) (and (<= (+ .cse1 1) 0) .cse2) (and .cse3 .cse4 (<= (+ .cse5 1) 0)) (let ((.cse33 (div c_main_~y~0 2))) (let ((.cse32 (* .cse33 (- 2))) (.cse21 (* 2 .cse33))) (let ((.cse13 (= c_main_~y~0 .cse21)) (.cse30 (div (+ c_main_~y~0 .cse32) 4294967296)) (.cse29 (div (+ c_main_~y~0 .cse32 (- 2)) 4294967296))) (let ((.cse22 (* 4294967296 .cse29)) (.cse23 (* 4294967296 .cse1)) (.cse31 (* 4294967296 .cse30)) (.cse20 (* 4294967296 .cse5)) (.cse26 (< c_main_~y~0 .cse0)) (.cse27 (not .cse13))) (let ((.cse6 (and .cse26 .cse27)) (.cse10 (+ .cse19 c_main_~y~0 .cse20 2)) (.cse8 (+ c_main_~x~0 .cse31 .cse21)) (.cse9 (+ .cse19 .cse23 c_main_~y~0)) (.cse14 (+ c_main_~x~0 .cse21 .cse22 2)) (.cse16 (+ .cse19 c_main_~y~0 .cse20)) (.cse15 (+ c_main_~x~0 .cse21 .cse22)) (.cse17 (<= .cse0 c_main_~y~0))) (and (let ((.cse7 (and .cse3 .cse4))) (or (and (or .cse6 (and (or .cse7 (< .cse8 .cse9)) (or (< .cse8 .cse10) .cse11 .cse12))) (or .cse13 (and (or (< .cse14 .cse9) .cse7) (or (< .cse15 .cse16) .cse11 .cse12)) .cse17)) (and (or (<= .cse18 3) (<= c_main_~x~0 8) (and (or (and (or .cse11 .cse12 (< .cse15 (+ .cse19 c_main_~y~0 .cse20 1))) (or (< (+ c_main_~x~0 .cse21 .cse22 1) .cse9) .cse7)) .cse13 .cse17) (or .cse6 (and (or .cse11 .cse12 (< .cse8 (+ .cse19 c_main_~y~0 .cse20 3))) (or (< .cse8 (+ .cse19 .cse23 c_main_~y~0 1)) .cse7))))) (or (<= 8 c_main_~x~0) (< 3 .cse18))))) (let ((.cse25 (or .cse13 .cse17))) (or (let ((.cse28 (+ .cse22 .cse21)) (.cse24 (+ .cse31 .cse21))) (and (or (<= c_main_~y~0 .cse21) (and (<= c_main_~y~0 .cse24) .cse25) (and .cse26 .cse27 (<= c_main_~y~0 .cse28)) (and (or .cse13 (< 0 .cse29) .cse17) (or (< 0 .cse30) .cse6))) (or (and .cse26 (<= .cse28 c_main_~y~0) .cse27) (and .cse26 .cse27 (<= .cse29 0)) (and (<= .cse24 c_main_~y~0) .cse25) (and (<= .cse30 0) .cse25)))) .cse13 (and .cse25 (or (and .cse3 .cse4 (<= .cse10 .cse8)) (and (<= .cse9 .cse8) .cse2))) (and .cse26 .cse27 (or (and (<= .cse9 .cse14) .cse2) (and .cse3 .cse4 (<= .cse16 .cse15))))))))))))))))) is different from true [2020-09-25 03:08:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:57,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:57,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-09-25 03:08:57,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436931340] [2020-09-25 03:08:58,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:58,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:08:58,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981071330] [2020-09-25 03:08:58,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:08:58,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:58,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:08:58,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2020-09-25 03:08:58,001 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 11 states. [2020-09-25 03:08:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:58,818 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-09-25 03:08:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:08:58,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-25 03:08:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:58,820 INFO L225 Difference]: With dead ends: 200 [2020-09-25 03:08:58,820 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 03:08:58,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=24, Invalid=89, Unknown=1, NotChecked=18, Total=132 [2020-09-25 03:08:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 03:08:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-09-25 03:08:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 03:08:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2020-09-25 03:08:58,833 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 33 [2020-09-25 03:08:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:58,834 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2020-09-25 03:08:58,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:08:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2020-09-25 03:08:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:08:58,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:58,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:58,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:08:58,836 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:58,837 INFO L82 PathProgramCache]: Analyzing trace with hash 132907260, now seen corresponding path program 1 times [2020-09-25 03:08:58,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:58,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611595134] [2020-09-25 03:08:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:08:58,851 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:08:58,851 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:08:58,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:08:58,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:08:58 BoogieIcfgContainer [2020-09-25 03:08:58,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:08:58,877 INFO L168 Benchmark]: Toolchain (without parser) took 43801.64 ms. Allocated memory was 147.3 MB in the beginning and 317.7 MB in the end (delta: 170.4 MB). Free memory was 104.5 MB in the beginning and 112.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 162.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:58,878 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:08:58,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.03 ms. Allocated memory is still 147.3 MB. Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:58,879 INFO L168 Benchmark]: Boogie Preprocessor took 135.54 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 183.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:58,880 INFO L168 Benchmark]: RCFGBuilder took 413.95 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 165.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:58,881 INFO L168 Benchmark]: TraceAbstraction took 42909.31 ms. Allocated memory was 204.5 MB in the beginning and 317.7 MB in the end (delta: 113.2 MB). Free memory was 165.5 MB in the beginning and 112.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 166.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:58,885 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.03 ms. Allocated memory is still 147.3 MB. Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.54 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 183.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.95 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 165.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42909.31 ms. Allocated memory was 204.5 MB in the beginning and 317.7 MB in the end (delta: 113.2 MB). Free memory was 165.5 MB in the beginning and 112.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 166.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 332 SDtfs, 220 SDslu, 1164 SDs, 0 SdLazy, 3381 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 30.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 185 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 193848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/5 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 incorrect! Received shutdown request...