/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:34:46,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:34:46,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:34:46,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:34:46,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:34:46,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:34:46,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:34:46,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:34:46,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:34:46,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:34:46,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:34:46,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:34:46,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:34:46,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:34:46,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:34:46,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:34:46,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:34:46,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:34:46,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:34:46,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:34:46,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:34:46,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:34:46,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:34:46,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:34:46,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:34:46,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:34:46,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:34:46,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:34:46,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:34:46,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:34:46,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:34:46,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:34:46,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:34:46,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:34:46,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:34:46,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:34:46,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:34:46,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:34:46,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:34:46,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:34:46,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:34:46,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:34:46,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:34:46,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:34:46,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:34:46,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:34:46,750 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:34:46,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:34:46,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:34:46,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:34:46,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:34:46,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:34:46,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:34:46,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:34:46,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:34:46,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:34:46,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:34:46,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:34:46,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:34:46,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:34:46,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:34:46,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:34:46,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:34:46,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:34:46,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:34:46,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:34:46,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:34:46,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:34:46,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:34:46,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:34:46,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:34:46,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:34:47,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:34:47,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:34:47,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:34:47,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:34:47,263 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:34:47,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 19:34:47,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13e00ca/fe086b80bb25426ebb36874e07aaeb9f/FLAG39e51859e [2020-09-24 19:34:47,927 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:34:47,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 19:34:47,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13e00ca/fe086b80bb25426ebb36874e07aaeb9f/FLAG39e51859e [2020-09-24 19:34:48,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13e00ca/fe086b80bb25426ebb36874e07aaeb9f [2020-09-24 19:34:48,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:34:48,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:34:48,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:48,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:34:48,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:34:48,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4556d30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48, skipping insertion in model container [2020-09-24 19:34:48,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:34:48,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:34:48,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:48,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:34:48,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:48,675 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:34:48,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48 WrapperNode [2020-09-24 19:34:48,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:48,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:34:48,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:34:48,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:34:48,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... [2020-09-24 19:34:48,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:34:48,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:34:48,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:34:48,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:34:48,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:34:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:34:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:34:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:34:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:34:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:34:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:34:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:34:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:34:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:34:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:34:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:34:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:34:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:34:49,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:34:49,160 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 19:34:49,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:49 BoogieIcfgContainer [2020-09-24 19:34:49,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:34:49,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:34:49,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:34:49,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:34:49,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:34:48" (1/3) ... [2020-09-24 19:34:49,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d348f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:49, skipping insertion in model container [2020-09-24 19:34:49,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:48" (2/3) ... [2020-09-24 19:34:49,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d348f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:49, skipping insertion in model container [2020-09-24 19:34:49,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:49" (3/3) ... [2020-09-24 19:34:49,178 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-24 19:34:49,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:34:49,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:34:49,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:34:49,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:34:49,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:34:49,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:34:49,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:34:49,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:34:49,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:34:49,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:34:49,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:34:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-24 19:34:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 19:34:49,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:49,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:49,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:49,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-24 19:34:49,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:49,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771238019] [2020-09-24 19:34:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:49,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:49,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:49,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:34:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 19:34:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:34:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:34:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:34:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:34:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:49,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:34:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:49,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:49,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771238019] [2020-09-24 19:34:49,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:49,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:34:49,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962834588] [2020-09-24 19:34:49,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:34:49,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:34:49,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:34:49,953 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-24 19:34:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:50,102 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-24 19:34:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:34:50,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 19:34:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:50,119 INFO L225 Difference]: With dead ends: 89 [2020-09-24 19:34:50,119 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 19:34:50,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:34:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 19:34:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 19:34:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 19:34:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 19:34:50,183 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-24 19:34:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:50,184 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 19:34:50,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:34:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 19:34:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 19:34:50,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:50,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:50,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:34:50,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:50,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-24 19:34:50,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:50,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797788309] [2020-09-24 19:34:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:50,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:34:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 19:34:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:34:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:34:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:34:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:34:50,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:50,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:50,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:50,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:50,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:50,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797788309] [2020-09-24 19:34:50,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:50,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:34:50,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995541199] [2020-09-24 19:34:50,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:34:50,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:50,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:34:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:34:50,471 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-24 19:34:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:50,661 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-24 19:34:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:34:50,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 19:34:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:50,664 INFO L225 Difference]: With dead ends: 90 [2020-09-24 19:34:50,664 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 19:34:50,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:34:50,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 19:34:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-24 19:34:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 19:34:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-24 19:34:50,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-24 19:34:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-24 19:34:50,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:34:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-24 19:34:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:34:50,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:50,686 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:50,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:34:50,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-24 19:34:50,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:50,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829703163] [2020-09-24 19:34:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:34:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:34:50,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:34:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:34:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:34:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:34:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:50,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829703163] [2020-09-24 19:34:50,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:50,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:34:50,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686098295] [2020-09-24 19:34:50,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:34:50,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:34:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:34:50,862 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-24 19:34:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:50,949 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-24 19:34:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:34:50,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-24 19:34:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:50,953 INFO L225 Difference]: With dead ends: 90 [2020-09-24 19:34:50,954 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 19:34:50,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:34:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 19:34:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-24 19:34:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 19:34:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 19:34:50,969 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-24 19:34:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:50,969 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 19:34:50,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:34:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 19:34:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 19:34:50,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:50,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:50,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:34:50,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-24 19:34:50,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:50,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766403370] [2020-09-24 19:34:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:51,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:34:51,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:34:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-24 19:34:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:34:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:34:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:34:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:34:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:51,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:51,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:34:51,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:34:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:34:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:51,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766403370] [2020-09-24 19:34:51,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:51,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:34:51,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507077246] [2020-09-24 19:34:51,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:34:51,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:51,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:34:51,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:34:51,701 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-24 19:34:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:52,018 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-24 19:34:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:34:52,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 19:34:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:52,022 INFO L225 Difference]: With dead ends: 146 [2020-09-24 19:34:52,022 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 19:34:52,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:34:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 19:34:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-24 19:34:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 19:34:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-24 19:34:52,041 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-24 19:34:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:52,042 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-24 19:34:52,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:34:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-24 19:34:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 19:34:52,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:52,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:52,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:34:52,045 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:52,045 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-24 19:34:52,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:52,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088426324] [2020-09-24 19:34:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:34:53,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:34:53,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:34:53,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:34:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:34:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:34:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:53,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088426324] [2020-09-24 19:34:53,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:34:53,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125440644] [2020-09-24 19:34:53,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:34:53,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:34:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:34:53,094 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 4 states. [2020-09-24 19:34:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:53,153 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-09-24 19:34:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:34:53,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-24 19:34:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:53,155 INFO L225 Difference]: With dead ends: 145 [2020-09-24 19:34:53,156 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 19:34:53,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:34:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 19:34:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-24 19:34:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 19:34:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-09-24 19:34:53,168 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 38 [2020-09-24 19:34:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:53,169 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-09-24 19:34:53,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:34:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-09-24 19:34:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:34:53,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:53,171 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:53,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:34:53,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-24 19:34:53,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:53,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143034100] [2020-09-24 19:34:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 19:34:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:34:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:34:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:34:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:34:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:53,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:34:53,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:34:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:53,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:34:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:34:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:34:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 19:34:53,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143034100] [2020-09-24 19:34:53,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:53,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:34:53,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247097213] [2020-09-24 19:34:53,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:34:53,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:34:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:34:53,436 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 8 states. [2020-09-24 19:34:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:53,661 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2020-09-24 19:34:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:34:53,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-24 19:34:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:53,663 INFO L225 Difference]: With dead ends: 152 [2020-09-24 19:34:53,663 INFO L226 Difference]: Without dead ends: 150 [2020-09-24 19:34:53,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:34:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-24 19:34:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2020-09-24 19:34:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-24 19:34:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-09-24 19:34:53,681 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 46 [2020-09-24 19:34:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:53,681 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-09-24 19:34:53,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:34:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-09-24 19:34:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 19:34:53,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:53,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:53,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:34:53,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-24 19:34:53,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:53,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528955729] [2020-09-24 19:34:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:54,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:34:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:34:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:34:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:34:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:34:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:34:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:54,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:34:54,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:34:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:34:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 19:34:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:54,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:34:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:34:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:34:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 19:34:54,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528955729] [2020-09-24 19:34:54,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:54,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:34:54,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164132457] [2020-09-24 19:34:54,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:34:54,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:54,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:34:54,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:34:54,871 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 9 states. [2020-09-24 19:34:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:55,061 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2020-09-24 19:34:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:34:55,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 19:34:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:55,064 INFO L225 Difference]: With dead ends: 155 [2020-09-24 19:34:55,064 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 19:34:55,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:34:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 19:34:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2020-09-24 19:34:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-24 19:34:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-09-24 19:34:55,096 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 47 [2020-09-24 19:34:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:55,096 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-09-24 19:34:55,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:34:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-09-24 19:34:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 19:34:55,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:55,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:55,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:34:55,102 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-24 19:34:55,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:55,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856418051] [2020-09-24 19:34:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:34:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:34:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:34:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:34:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:34:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:34:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:34:56,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:56,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 19:34:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:34:56,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 19:34:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:34:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 19:34:56,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856418051] [2020-09-24 19:34:56,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:56,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:34:56,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553306311] [2020-09-24 19:34:56,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:34:56,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:34:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:34:56,231 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-09-24 19:34:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:56,347 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2020-09-24 19:34:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:34:56,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-24 19:34:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:56,349 INFO L225 Difference]: With dead ends: 136 [2020-09-24 19:34:56,350 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 19:34:56,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:34:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 19:34:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2020-09-24 19:34:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 19:34:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-09-24 19:34:56,376 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 50 [2020-09-24 19:34:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:56,377 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-09-24 19:34:56,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:34:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-09-24 19:34:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 19:34:56,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:56,378 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:56,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:34:56,378 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1080348991, now seen corresponding path program 2 times [2020-09-24 19:34:56,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:56,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255252778] [2020-09-24 19:34:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:34:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 19:34:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:34:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:34:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:34:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:34:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:34:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:34:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:34:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:34:56,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 19:34:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:34:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:34:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:56,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:56,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:56,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:56,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:34:56,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:56,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 19:34:56,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255252778] [2020-09-24 19:34:56,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:34:56,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740768950] [2020-09-24 19:34:56,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:34:56,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:56,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:34:56,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:34:56,836 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 10 states. [2020-09-24 19:34:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:57,198 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-09-24 19:34:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:34:57,199 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-24 19:34:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:57,199 INFO L225 Difference]: With dead ends: 116 [2020-09-24 19:34:57,200 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:34:57,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:34:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:34:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:34:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:34:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:34:57,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 19:34:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:57,204 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:34:57,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:34:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:34:57,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:34:57,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:34:57,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:34:57,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:34:57,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:34:57,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:34:57,759 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:34:57,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 19:34:57,760 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 19:34:57,761 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-24 19:34:57,762 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:34:57,762 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 19:34:57,763 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 19:34:57,763 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 19:34:57,764 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 19:34:57,765 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 19:34:57,765 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 19:34:57,765 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 19:34:57,765 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 2)) (.cse3 (+ (* 2 main_~i~0) 1))) (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse4 (<= .cse3 main_~k~0)) (.cse5 (<= main_~k~0 main_~n~0)) (.cse2 (= .cse0 main_~j~0))) (or (and (= .cse0 main_~k~0) .cse1 .cse2) (and (<= .cse3 main_~j~0) .cse1 .cse4 .cse5) (and .cse4 .cse5 .cse2)))) [2020-09-24 19:34:57,765 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 19:34:57,766 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 19:34:57,766 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-24 19:34:57,766 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 19:34:57,766 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-24 19:34:57,766 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 19:34:57,767 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse4 (* main_~i~0 2)) (.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0)) (.cse3 (<= .cse1 main_~k~0)) (.cse5 (= .cse4 main_~j~0))) (or (and .cse0 (<= .cse1 main_~j~0) .cse2 .cse3) (and (= .cse4 main_~k~0) .cse2 .cse5) (and .cse0 .cse3 .cse5)))) [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 19:34:57,767 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-24 19:34:57,768 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-24 19:34:57,768 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 19:34:57,768 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 19:34:57,768 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 19:34:57,769 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-24 19:34:57,769 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 19:34:57,769 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:34:57,769 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 19:34:57,769 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 19:34:57,769 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:34:57,770 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 19:34:57,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:34:57 BoogieIcfgContainer [2020-09-24 19:34:57,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:34:57,820 INFO L168 Benchmark]: Toolchain (without parser) took 9467.50 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 102.4 MB in the beginning and 102.4 MB in the end (delta: 22.3 kB). Peak memory consumption was 145.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,821 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.13 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,824 INFO L168 Benchmark]: Boogie Preprocessor took 131.37 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 179.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,827 INFO L168 Benchmark]: RCFGBuilder took 358.10 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 164.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,831 INFO L168 Benchmark]: TraceAbstraction took 8644.07 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 164.1 MB in the beginning and 102.4 MB in the end (delta: 61.7 MB). Peak memory consumption was 144.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:57,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.13 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.37 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 179.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.10 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 164.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8644.07 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 164.1 MB in the beginning and 102.4 MB in the end (delta: 61.7 MB). Peak memory consumption was 144.6 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: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i + 1 <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n)) || ((2 * i + 1 <= k && k <= n) && i * 2 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 513 SDtfs, 259 SDslu, 1864 SDs, 0 SdLazy, 960 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=7, 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, 9 MinimizatonAttempts, 166 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 56 NumberOfFragments, 230 HoareAnnotationTreeSize, 32 FomulaSimplifications, 3333 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 236 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 36789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 82/99 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...