/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 interpolation-heuristic=FIRST --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/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:11:21,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:11:21,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:11:21,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:11:21,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:11:21,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:11:21,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:11:21,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:11:21,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:11:21,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:11:21,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:11:21,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:11:21,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:11:21,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:11:21,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:11:21,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:11:21,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:11:21,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:11:21,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:11:21,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:11:21,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:11:21,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:11:21,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:11:21,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:11:21,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:11:21,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:11:21,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:11:21,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:11:21,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:11:21,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:11:21,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:11:21,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:11:21,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:11:21,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:11:21,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:11:21,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:11:21,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:11:21,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:11:21,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:11:21,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:11:21,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:11:21,234 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 16:11:21,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:11:21,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:11:21,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:11:21,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:11:21,286 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:11:21,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:11:21,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:11:21,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:11:21,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:11:21,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:11:21,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:11:21,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:11:21,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:11:21,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:11:21,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:11:21,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:11:21,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:11:21,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:11:21,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:11:21,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:11:21,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:11:21,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:21,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:11:21,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:11:21,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:11:21,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:11:21,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:11:21,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:11:21,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:11:21,293 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:11:21,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:11:21,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:11:21,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:11:21,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:11:21,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:11:21,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-09-24 16:11:21,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2cf8c51/e5693ec5ad2b4e30b2ade429b0475cde/FLAGf284bf7c1 [2020-09-24 16:11:22,451 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:11:22,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/large_const.i [2020-09-24 16:11:22,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2cf8c51/e5693ec5ad2b4e30b2ade429b0475cde/FLAGf284bf7c1 [2020-09-24 16:11:22,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af2cf8c51/e5693ec5ad2b4e30b2ade429b0475cde [2020-09-24 16:11:22,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:11:22,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:11:22,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:22,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:11:22,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:11:22,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:22" (1/1) ... [2020-09-24 16:11:22,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4983149e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:22, skipping insertion in model container [2020-09-24 16:11:22,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:22" (1/1) ... [2020-09-24 16:11:22,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:11:22,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:11:23,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:23,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:11:23,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:23,154 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:11:23,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23 WrapperNode [2020-09-24 16:11:23,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:23,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:11:23,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:11:23,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:11:23,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (1/1) ... [2020-09-24 16:11:23,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:11:23,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:11:23,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:11:23,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:11:23,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (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 16:11:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:11:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:11:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:11:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:11:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:11:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:11:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:11:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:11:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:11:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:11:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:11:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:11:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:11:23,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:11:23,700 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:11:23,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:23 BoogieIcfgContainer [2020-09-24 16:11:23,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:11:23,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:11:23,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:11:23,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:11:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:11:22" (1/3) ... [2020-09-24 16:11:23,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5b9967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:23, skipping insertion in model container [2020-09-24 16:11:23,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:23" (2/3) ... [2020-09-24 16:11:23,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5b9967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:23, skipping insertion in model container [2020-09-24 16:11:23,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:23" (3/3) ... [2020-09-24 16:11:23,715 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-09-24 16:11:23,725 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:11:23,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:11:23,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:11:23,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:11:23,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:11:23,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:11:23,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:11:23,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:11:23,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:11:23,786 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:11:23,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:11:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-24 16:11:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:11:23,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:23,821 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 16:11:23,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash 288343897, now seen corresponding path program 1 times [2020-09-24 16:11:23,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:23,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492434853] [2020-09-24 16:11:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:23,975 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:23,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:23,975 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:23,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:11:23,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:11:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 16:11:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:24,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:24,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:24,028 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 16:11:24,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492434853] [2020-09-24 16:11:24,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:24,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:11:24,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652777689] [2020-09-24 16:11:24,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:11:24,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:24,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:11:24,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:24,060 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-24 16:11:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:24,094 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-09-24 16:11:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:11:24,096 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-09-24 16:11:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:24,110 INFO L225 Difference]: With dead ends: 75 [2020-09-24 16:11:24,110 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 16:11:24,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 16:11:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 16:11:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 16:11:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-24 16:11:24,169 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 27 [2020-09-24 16:11:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:24,170 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-24 16:11:24,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:11:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-24 16:11:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:11:24,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:24,172 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 16:11:24,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:11:24,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:24,174 INFO L82 PathProgramCache]: Analyzing trace with hash 320540924, now seen corresponding path program 1 times [2020-09-24 16:11:24,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:24,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422468578] [2020-09-24 16:11:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,218 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,219 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,219 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:11:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:11:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:11:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 16:11:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:11:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,293 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:24,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:24,303 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 16:11:24,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422468578] [2020-09-24 16:11:24,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:24,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:11:24,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099561790] [2020-09-24 16:11:24,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:11:24,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:11:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:11:24,308 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2020-09-24 16:11:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:24,414 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-09-24 16:11:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:11:24,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 16:11:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:24,417 INFO L225 Difference]: With dead ends: 67 [2020-09-24 16:11:24,417 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 16:11:24,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 16:11:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-24 16:11:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 16:11:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 16:11:24,431 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2020-09-24 16:11:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:24,433 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 16:11:24,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:11:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 16:11:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:11:24,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:24,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:24,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:11:24,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash 751787059, now seen corresponding path program 1 times [2020-09-24 16:11:24,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:24,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697616083] [2020-09-24 16:11:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 16:11:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 16:11:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:11:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:11:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,657 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,657 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:24,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:24,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697616083] [2020-09-24 16:11:24,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:24,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:11:24,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110263798] [2020-09-24 16:11:24,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:24,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:24,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:24,669 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-09-24 16:11:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:24,810 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-24 16:11:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:11:24,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-24 16:11:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:24,813 INFO L225 Difference]: With dead ends: 88 [2020-09-24 16:11:24,813 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 16:11:24,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 16:11:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-09-24 16:11:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 16:11:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-09-24 16:11:24,826 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 37 [2020-09-24 16:11:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:24,827 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-09-24 16:11:24,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-09-24 16:11:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 16:11:24,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:24,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:24,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:11:24,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:24,830 INFO L82 PathProgramCache]: Analyzing trace with hash 3796503, now seen corresponding path program 1 times [2020-09-24 16:11:24,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:24,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40148458] [2020-09-24 16:11:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:24,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:24,875 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:24,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 16:11:24,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:11:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:11:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,006 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:25,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40148458] [2020-09-24 16:11:25,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:25,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:11:25,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755077534] [2020-09-24 16:11:25,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:25,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:25,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:25,029 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 7 states. [2020-09-24 16:11:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:25,168 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-09-24 16:11:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:11:25,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 16:11:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:25,173 INFO L225 Difference]: With dead ends: 105 [2020-09-24 16:11:25,173 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 16:11:25,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 16:11:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-09-24 16:11:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 16:11:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 16:11:25,186 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 38 [2020-09-24 16:11:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:25,186 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 16:11:25,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 16:11:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 16:11:25,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:25,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:25,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:11:25,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 197728887, now seen corresponding path program 1 times [2020-09-24 16:11:25,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:25,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973984586] [2020-09-24 16:11:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,219 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,219 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,219 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 16:11:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:11:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:11:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:11:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,298 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:25,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973984586] [2020-09-24 16:11:25,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:25,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:11:25,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475329808] [2020-09-24 16:11:25,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:25,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:25,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:25,308 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 7 states. [2020-09-24 16:11:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:25,405 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-09-24 16:11:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:11:25,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 16:11:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:25,408 INFO L225 Difference]: With dead ends: 116 [2020-09-24 16:11:25,408 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 16:11:25,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 16:11:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2020-09-24 16:11:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 16:11:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-09-24 16:11:25,421 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 38 [2020-09-24 16:11:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:25,421 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-09-24 16:11:25,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-09-24 16:11:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 16:11:25,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:25,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:25,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:11:25,424 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:25,424 INFO L82 PathProgramCache]: Analyzing trace with hash 88652198, now seen corresponding path program 1 times [2020-09-24 16:11:25,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:25,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397060479] [2020-09-24 16:11:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 16:11:25,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:11:25,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:11:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 16:11:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:25,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 16:11:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,558 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,558 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:25,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397060479] [2020-09-24 16:11:25,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:25,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:25,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441337922] [2020-09-24 16:11:25,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:25,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:25,571 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 9 states. [2020-09-24 16:11:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:25,778 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-09-24 16:11:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:11:25,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-24 16:11:25,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:25,781 INFO L225 Difference]: With dead ends: 129 [2020-09-24 16:11:25,781 INFO L226 Difference]: Without dead ends: 127 [2020-09-24 16:11:25,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-24 16:11:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-09-24 16:11:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 16:11:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2020-09-24 16:11:25,795 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 49 [2020-09-24 16:11:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:25,795 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2020-09-24 16:11:25,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2020-09-24 16:11:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 16:11:25,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:25,798 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:25,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:11:25,798 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1084443264, now seen corresponding path program 1 times [2020-09-24 16:11:25,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:25,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942968253] [2020-09-24 16:11:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,823 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 16:11:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:11:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:11:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 16:11:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:11:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:25,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:25,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:25,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:25,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942968253] [2020-09-24 16:11:25,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:25,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 16:11:25,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361385476] [2020-09-24 16:11:25,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:11:25,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:25,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:11:25,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:11:25,906 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand 6 states. [2020-09-24 16:11:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:25,962 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2020-09-24 16:11:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:11:25,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-24 16:11:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:25,964 INFO L225 Difference]: With dead ends: 150 [2020-09-24 16:11:25,964 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 16:11:25,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 16:11:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-09-24 16:11:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 16:11:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-09-24 16:11:25,973 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 48 [2020-09-24 16:11:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:25,973 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-09-24 16:11:25,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:11:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-09-24 16:11:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 16:11:25,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:25,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:25,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:11:25,976 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1391225462, now seen corresponding path program 1 times [2020-09-24 16:11:25,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:25,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048123187] [2020-09-24 16:11:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,007 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,008 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,008 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:11:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:11:26,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 16:11:26,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,119 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,120 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,120 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,120 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:26,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 16:11:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:26,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:26,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:26,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048123187] [2020-09-24 16:11:26,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:26,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:26,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114498818] [2020-09-24 16:11:26,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:26,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:26,139 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-09-24 16:11:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:26,305 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-09-24 16:11:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:11:26,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-24 16:11:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:26,307 INFO L225 Difference]: With dead ends: 96 [2020-09-24 16:11:26,307 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 16:11:26,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 16:11:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2020-09-24 16:11:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 16:11:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-09-24 16:11:26,316 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 50 [2020-09-24 16:11:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:26,316 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-09-24 16:11:26,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-09-24 16:11:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 16:11:26,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:26,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:26,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:11:26,318 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:26,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:26,319 INFO L82 PathProgramCache]: Analyzing trace with hash -798805526, now seen corresponding path program 1 times [2020-09-24 16:11:26,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:26,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214921480] [2020-09-24 16:11:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,349 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,349 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:11:26,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 16:11:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 16:11:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:26,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214921480] [2020-09-24 16:11:26,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:26,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:26,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369484149] [2020-09-24 16:11:26,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:26,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:26,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:26,441 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-09-24 16:11:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:26,603 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-09-24 16:11:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:11:26,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-24 16:11:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:26,605 INFO L225 Difference]: With dead ends: 94 [2020-09-24 16:11:26,605 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 16:11:26,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 16:11:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-09-24 16:11:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 16:11:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-09-24 16:11:26,613 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 50 [2020-09-24 16:11:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:26,614 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-09-24 16:11:26,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-09-24 16:11:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 16:11:26,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:26,615 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:26,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:11:26,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1367702887, now seen corresponding path program 2 times [2020-09-24 16:11:26,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:26,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135905760] [2020-09-24 16:11:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,636 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,637 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,637 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 16:11:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:11:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:11:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 16:11:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:11:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,692 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:26,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 16:11:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,701 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,701 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,701 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:26,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:26,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:26,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:26,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:26,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:26,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:26,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:26,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:11:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 16:11:26,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135905760] [2020-09-24 16:11:26,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:26,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 16:11:26,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742927726] [2020-09-24 16:11:26,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:11:26,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:11:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:11:26,733 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 6 states. [2020-09-24 16:11:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:26,794 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-09-24 16:11:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:11:26,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-24 16:11:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:26,795 INFO L225 Difference]: With dead ends: 67 [2020-09-24 16:11:26,795 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:11:26,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:11:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:11:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:11:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:11:26,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-24 16:11:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:26,797 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:11:26,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:11:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:11:26,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:11:26,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:11:26,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:11:27,164 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-09-24 16:11:27,281 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2020-09-24 16:11:27,286 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:11:27,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:27,287 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:27,287 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:11:27,287 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:11:27,287 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:11:27,288 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:27,288 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:27,288 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:11:27,288 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:11:27,289 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:27,290 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~j~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 1 main_~i~0)) (.cse3 (<= main_~n~0 main_~i~0)) (.cse6 (<= main_~n~0 1)) (.cse4 (< 0 main_~k~0)) (.cse5 (<= 2000 main_~c2~0)) (.cse7 (<= 10000 main_~c3~0))) (or (and .cse0 (<= main_~i~0 0) (<= main_~n~0 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse1 (= main_~j~0 0) (<= 2000 main_~k~0) .cse2 .cse3 .cse6 .cse4 .cse5 .cse7))) [2020-09-24 16:11:27,290 INFO L268 CegarLoopResult]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2020-09-24 16:11:27,290 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 41) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 16:11:27,291 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:11:27,292 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 16:11:27,293 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-09-24 16:11:27,294 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (<= main_~i~0 0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2020-09-24 16:11:27,295 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:11:27,295 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:11:27,295 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:11:27,295 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 16:11:27,295 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:11:27,296 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:11:27,296 INFO L268 CegarLoopResult]: For program point L13(lines 13 41) no Hoare annotation was computed. [2020-09-24 16:11:27,296 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 41) no Hoare annotation was computed. [2020-09-24 16:11:27,296 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 16:11:27,296 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:11:27,297 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:11:27,298 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:11:27,299 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:27,299 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:11:27,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:11:27 BoogieIcfgContainer [2020-09-24 16:11:27,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:11:27,360 INFO L168 Benchmark]: Toolchain (without parser) took 4546.94 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 102.7 MB in the beginning and 156.9 MB in the end (delta: -54.2 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:27,362 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:11:27,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.25 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:27,366 INFO L168 Benchmark]: Boogie Preprocessor took 143.53 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 183.2 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:27,369 INFO L168 Benchmark]: RCFGBuilder took 405.03 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 166.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:27,374 INFO L168 Benchmark]: TraceAbstraction took 3646.51 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 165.4 MB in the beginning and 156.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:27,388 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 147.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.25 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.53 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 183.2 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.03 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 166.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3646.51 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 165.4 MB in the beginning and 156.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 49.9 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: 23]: Loop Invariant Derived loop invariant: (((((((4000 <= c1 && i <= 0) && 10000 <= c3 + k) && 0 <= i) && 4000 <= c1 + k) && 2000 <= c2 + k) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((n <= j && i <= 0) && n <= 0) || (((((((n <= j && 4000 <= c1) && 1 <= i) && n <= i) && 0 < k) && 2000 <= c2) && n <= 1) && 10000 <= c3)) || ((((((((4000 <= c1 && j == 0) && 2000 <= k) && 1 <= i) && n <= i) && n <= 1) && 0 < k) && 2000 <= c2) && 10000 <= c3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 564 SDtfs, 492 SDslu, 1794 SDs, 0 SdLazy, 465 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, 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, 10 MinimizatonAttempts, 125 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 21 NumberOfFragments, 142 HoareAnnotationTreeSize, 15 FomulaSimplifications, 71 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 320 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 45219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 36/50 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...