/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:19:57,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:19:57,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:19:57,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:19:57,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:19:57,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:19:57,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:19:57,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:19:57,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:19:57,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:19:57,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:19:57,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:19:57,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:19:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:19:57,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:19:57,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:19:57,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:19:57,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:19:57,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:19:57,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:19:57,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:19:57,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:19:57,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:19:57,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:19:57,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:19:57,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:19:57,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:19:57,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:19:57,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:19:57,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:19:57,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:19:57,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:19:57,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:19:57,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:19:57,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:19:57,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:19:57,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:19:57,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:19:57,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:19:57,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:19:57,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:19:57,385 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 [2020-10-12 16:19:57,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:19:57,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:19:57,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:19:57,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:19:57,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:19:57,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:19:57,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:19:57,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:19:57,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:19:57,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:19:57,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:19:57,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:19:57,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:19:57,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:19:57,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:19:57,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:19:57,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:19:57,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:19:57,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:19:57,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:19:57,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:19:57,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:19:57,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:19:57,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:19:57,420 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:19:57,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:19:57,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:19:57,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:19:57,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:19:57,733 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:19:57,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-10-12 16:19:57,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e17880bc1/56e3aa0a43014d47a159c643c2a8239d/FLAG5f88db0fd [2020-10-12 16:19:58,238 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:19:58,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-10-12 16:19:58,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e17880bc1/56e3aa0a43014d47a159c643c2a8239d/FLAG5f88db0fd [2020-10-12 16:19:58,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e17880bc1/56e3aa0a43014d47a159c643c2a8239d [2020-10-12 16:19:58,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:19:58,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:19:58,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:58,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:19:58,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:19:58,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab12f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58, skipping insertion in model container [2020-10-12 16:19:58,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:19:58,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:19:58,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:58,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:19:58,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:58,875 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:19:58,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58 WrapperNode [2020-10-12 16:19:58,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:58,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:19:58,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:19:58,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:19:58,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:58,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (1/1) ... [2020-10-12 16:19:59,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:19:59,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:19:59,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:19:59,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:19:59,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (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 [2020-10-12 16:19:59,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:19:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:19:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:19:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:19:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:19:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:19:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:19:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:19:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:19:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:19:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:19:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:19:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:19:59,311 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:19:59,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:19:59,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:59 BoogieIcfgContainer [2020-10-12 16:19:59,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:19:59,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:19:59,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:19:59,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:19:59,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:19:58" (1/3) ... [2020-10-12 16:19:59,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ccdd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:59, skipping insertion in model container [2020-10-12 16:19:59,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:58" (2/3) ... [2020-10-12 16:19:59,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ccdd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:59, skipping insertion in model container [2020-10-12 16:19:59,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:59" (3/3) ... [2020-10-12 16:19:59,325 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-10-12 16:19:59,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:19:59,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:19:59,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:19:59,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:19:59,407 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:19:59,407 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:19:59,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:19:59,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:19:59,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:19:59,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:19:59,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:19:59,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-12 16:19:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:19:59,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:59,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:59,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:59,475 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-10-12 16:19:59,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:59,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530940634] [2020-10-12 16:19:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:59,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:19:59,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 16:19:59,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:19:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:19:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:19:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 16:20:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:20:00,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:00,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530940634] [2020-10-12 16:20:00,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:00,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:20:00,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274679768] [2020-10-12 16:20:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:20:00,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:20:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:20:00,116 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-12 16:20:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:00,412 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2020-10-12 16:20:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:20:00,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-12 16:20:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:00,424 INFO L225 Difference]: With dead ends: 50 [2020-10-12 16:20:00,425 INFO L226 Difference]: Without dead ends: 23 [2020-10-12 16:20:00,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:20:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-12 16:20:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-10-12 16:20:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-12 16:20:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-12 16:20:00,468 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-10-12 16:20:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:00,469 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-12 16:20:00,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:20:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-12 16:20:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 16:20:00,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:00,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:00,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:20:00,471 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-10-12 16:20:00,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:00,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279997033] [2020-10-12 16:20:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:20:00,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-12 16:20:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:20:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:20:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:01,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:01,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:01,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279997033] [2020-10-12 16:20:01,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:01,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:20:01,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791071820] [2020-10-12 16:20:01,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:01,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:01,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:01,148 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 8 states. [2020-10-12 16:20:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:07,582 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-10-12 16:20:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:20:07,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-12 16:20:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:07,584 INFO L225 Difference]: With dead ends: 40 [2020-10-12 16:20:07,584 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 16:20:07,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:20:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 16:20:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-10-12 16:20:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-12 16:20:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-12 16:20:07,592 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-10-12 16:20:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:07,592 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-12 16:20:07,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-12 16:20:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:20:07,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:07,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:07,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:20:07,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-10-12 16:20:07,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:07,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963821221] [2020-10-12 16:20:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:20:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 16:20:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:20:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:20:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:20:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:08,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963821221] [2020-10-12 16:20:08,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:08,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:20:08,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858810405] [2020-10-12 16:20:08,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:20:08,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:20:08,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:20:08,106 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-10-12 16:20:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:16,606 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-12 16:20:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:20:16,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-12 16:20:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:16,610 INFO L225 Difference]: With dead ends: 39 [2020-10-12 16:20:16,612 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:20:16,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:20:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:20:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-10-12 16:20:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 16:20:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-10-12 16:20:16,629 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2020-10-12 16:20:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:16,629 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-12 16:20:16,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:20:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-10-12 16:20:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 16:20:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:16,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:16,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:20:16,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-10-12 16:20:16,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:16,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168493739] [2020-10-12 16:20:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:16,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:20:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 16:20:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:20:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:17,482 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2020-10-12 16:20:17,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:17,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168493739] [2020-10-12 16:20:17,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:17,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:17,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800830837] [2020-10-12 16:20:17,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:17,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:17,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:17,499 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 5 states. [2020-10-12 16:20:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:21,785 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2020-10-12 16:20:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:21,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-12 16:20:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:21,787 INFO L225 Difference]: With dead ends: 44 [2020-10-12 16:20:21,787 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 16:20:21,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 16:20:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-10-12 16:20:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 16:20:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-12 16:20:21,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2020-10-12 16:20:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:21,796 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-12 16:20:21,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-12 16:20:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:20:21,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:21,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:21,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:20:21,798 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-10-12 16:20:21,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:21,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128617535] [2020-10-12 16:20:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:22,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:22,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:20:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-12 16:20:22,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:20:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:22,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:20:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:22,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128617535] [2020-10-12 16:20:22,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:22,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:22,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882243910] [2020-10-12 16:20:22,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:22,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:22,406 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2020-10-12 16:20:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:22,553 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2020-10-12 16:20:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:22,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:20:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:22,555 INFO L225 Difference]: With dead ends: 44 [2020-10-12 16:20:22,555 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 16:20:22,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 16:20:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-12 16:20:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 16:20:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-12 16:20:22,567 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2020-10-12 16:20:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:22,568 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-12 16:20:22,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-12 16:20:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:20:22,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:22,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:22,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:20:22,569 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-10-12 16:20:22,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:22,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623955096] [2020-10-12 16:20:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:23,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:20:23,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-12 16:20:23,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:20:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:23,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:23,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:20:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:23,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623955096] [2020-10-12 16:20:23,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:23,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:23,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40764411] [2020-10-12 16:20:23,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:23,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:23,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:23,410 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2020-10-12 16:20:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:23,520 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-10-12 16:20:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:23,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-12 16:20:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:23,523 INFO L225 Difference]: With dead ends: 44 [2020-10-12 16:20:23,523 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 16:20:23,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 16:20:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 16:20:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 16:20:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-12 16:20:23,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 21 [2020-10-12 16:20:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:23,536 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-12 16:20:23,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-12 16:20:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:20:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:23,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:23,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:20:23,543 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-10-12 16:20:23,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:23,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412338287] [2020-10-12 16:20:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:20:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-12 16:20:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:20:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:20:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:24,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:24,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:24,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:24,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:24,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:24,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:24,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:24,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 16:20:24,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412338287] [2020-10-12 16:20:24,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:24,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:20:24,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567950490] [2020-10-12 16:20:24,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:20:24,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:24,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:20:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:20:24,139 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2020-10-12 16:20:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:24,380 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-12 16:20:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:20:24,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-12 16:20:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:24,382 INFO L225 Difference]: With dead ends: 40 [2020-10-12 16:20:24,382 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 16:20:24,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:20:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 16:20:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-12 16:20:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 16:20:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-12 16:20:24,389 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2020-10-12 16:20:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:24,390 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-12 16:20:24,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:20:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-12 16:20:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:20:24,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:24,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:24,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:20:24,391 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-10-12 16:20:24,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:24,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468213522] [2020-10-12 16:20:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:33,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:20:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8788 [2020-10-12 16:20:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:20:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:20:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:20:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:33,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:33,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:33,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:33,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:33,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:33,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:33,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468213522] [2020-10-12 16:20:33,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:33,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:20:33,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383555498] [2020-10-12 16:20:33,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:20:33,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:20:33,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:20:33,414 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-12 16:20:38,092 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 858993459 c_main_~l~0))) (and (<= 0 (+ .cse0 (* 4294967296 (div (+ (* c_main_~l~0 (- 858993459)) 858993459) 4294967296)))) (= c_~SIZE~0 |c_old(~SIZE~0)|) (<= (let ((.cse3 (div c_main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ c_main_~l~0 .cse2) 5))) (+ (* 3689348818177884160 (div (+ c_main_~l~0 (* .cse1 (- 5)) .cse2) 4294967296)) (* 4294967296 .cse1) (* 3689348813882916864 .cse3) 858993459)))) .cse0))) is different from false [2020-10-12 16:20:46,471 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-12 16:21:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:03,471 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-12 16:21:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:21:03,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-12 16:21:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:03,474 INFO L225 Difference]: With dead ends: 57 [2020-10-12 16:21:03,474 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 16:21:03,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=34, Invalid=73, Unknown=7, NotChecked=18, Total=132 [2020-10-12 16:21:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 16:21:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-10-12 16:21:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 16:21:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-10-12 16:21:03,483 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 24 [2020-10-12 16:21:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:03,484 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-10-12 16:21:03,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:21:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-10-12 16:21:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 16:21:03,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:03,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:03,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:21:03,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:03,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-10-12 16:21:03,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:03,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731948226] [2020-10-12 16:21:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:15,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 16:21:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12110 [2020-10-12 16:21:15,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:21:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:21:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:21:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:15,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:21:15,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731948226] [2020-10-12 16:21:15,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:15,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:21:15,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353850301] [2020-10-12 16:21:15,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:21:15,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:21:15,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:21:15,702 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 6 states. [2020-10-12 16:21:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:15,824 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2020-10-12 16:21:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:21:15,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-12 16:21:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:15,826 INFO L225 Difference]: With dead ends: 62 [2020-10-12 16:21:15,826 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 16:21:15,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:21:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 16:21:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-12 16:21:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 16:21:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-10-12 16:21:15,835 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 25 [2020-10-12 16:21:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:15,835 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-10-12 16:21:15,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:21:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-10-12 16:21:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 16:21:15,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:15,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:15,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:21:15,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-10-12 16:21:15,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:15,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735532920] [2020-10-12 16:21:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:21:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22963 [2020-10-12 16:21:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:21:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:21:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:21:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:21:38,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735532920] [2020-10-12 16:21:38,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:38,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:21:38,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923660858] [2020-10-12 16:21:38,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:21:38,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:21:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:21:38,965 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 6 states. [2020-10-12 16:21:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:41,205 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-10-12 16:21:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:21:41,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-12 16:21:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:41,208 INFO L225 Difference]: With dead ends: 62 [2020-10-12 16:21:41,208 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 16:21:41,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:21:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 16:21:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-12 16:21:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 16:21:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-12 16:21:41,217 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 26 [2020-10-12 16:21:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:41,217 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-12 16:21:41,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:21:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-12 16:21:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 16:21:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:41,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:41,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:21:41,220 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-10-12 16:21:41,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:41,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096592575] [2020-10-12 16:21:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 16:22:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55071 [2020-10-12 16:22:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 16:22:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:22:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:22:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:22:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:36,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:22:36,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:36,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 16:22:36,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096592575] [2020-10-12 16:22:36,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:22:36,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:22:36,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111577840] [2020-10-12 16:22:36,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:22:36,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:22:36,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:22:36,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:22:36,458 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 8 states. [2020-10-12 16:22:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:22:36,597 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-12 16:22:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:22:36,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-12 16:22:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:22:36,598 INFO L225 Difference]: With dead ends: 40 [2020-10-12 16:22:36,598 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:22:36,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:22:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:22:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:22:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:22:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:22:36,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-12 16:22:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:22:36,600 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:22:36,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:22:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:22:36,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:22:36,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:22:36,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:22:36,716 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:22:36,717 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-12 16:22:36,717 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:22:36,717 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:22:36,717 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:22:36,717 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:22:36,717 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-10-12 16:22:36,718 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-10-12 16:22:36,719 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-10-12 16:22:36,719 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-10-12 16:22:36,719 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-10-12 16:22:36,719 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-12 16:22:36,719 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (let ((.cse2 (+ main_~l~0 (* 4294967296 (div .cse0 4294967296)))) (.cse1 (* 4294967296 (div main_~l~0 4294967296)))) (and (<= .cse0 main_~l~0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse1) .cse2) (< .cse2 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse1 1))))) [2020-10-12 16:22:36,719 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-10-12 16:22:36,720 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-10-12 16:22:36,720 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 16:22:36,720 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-12 16:22:36,720 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:22:36,720 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 16:22:36,720 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-12 16:22:36,720 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:22:36,721 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-12 16:22:36,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:22:36 BoogieIcfgContainer [2020-10-12 16:22:36,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:22:36,743 INFO L168 Benchmark]: Toolchain (without parser) took 158108.95 ms. Allocated memory was 146.8 MB in the beginning and 390.6 MB in the end (delta: 243.8 MB). Free memory was 103.0 MB in the beginning and 258.5 MB in the end (delta: -155.5 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,744 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.46 ms. Allocated memory is still 146.8 MB. Free memory was 103.0 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,745 INFO L168 Benchmark]: Boogie Preprocessor took 124.16 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,746 INFO L168 Benchmark]: RCFGBuilder took 314.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,747 INFO L168 Benchmark]: TraceAbstraction took 157423.05 ms. Allocated memory was 202.9 MB in the beginning and 390.6 MB in the end (delta: 187.7 MB). Free memory was 166.7 MB in the beginning and 258.5 MB in the end (delta: -91.7 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:22:36,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.46 ms. Allocated memory is still 146.8 MB. Free memory was 103.0 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.16 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 157423.05 ms. Allocated memory was 202.9 MB in the beginning and 390.6 MB in the end (delta: 187.7 MB). Free memory was 166.7 MB in the beginning and 258.5 MB in the end (delta: -91.7 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 157.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 52.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 346 SDslu, 236 SDs, 0 SdLazy, 704 SolverSat, 92 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 33.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=10, 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, 11 MinimizatonAttempts, 32 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 29 NumberOfFragments, 82 HoareAnnotationTreeSize, 19 FomulaSimplifications, 1147 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 110 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 103.9s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 47900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 47/80 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...