/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:36:16,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:36:16,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:36:16,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:36:16,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:36:16,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:36:16,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:36:16,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:36:16,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:36:16,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:36:16,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:36:16,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:36:16,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:36:16,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:36:16,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:36:16,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:36:16,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:36:16,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:36:16,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:36:16,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:36:16,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:36:16,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:36:16,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:36:16,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:36:16,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:36:16,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:36:16,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:36:16,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:36:16,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:36:16,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:36:16,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:36:16,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:36:16,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:36:16,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:36:16,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:36:16,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:36:16,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:36:16,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:36:16,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:36:16,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:36:16,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:36:16,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:36:16,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:36:16,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:36:16,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:36:16,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:36:16,316 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:36:16,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:36:16,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:36:16,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:36:16,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:36:16,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:36:16,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:36:16,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:36:16,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:36:16,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:36:16,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:36:16,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:36:16,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:36:16,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:36:16,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:36:16,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:36:16,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:36:16,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:36:16,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:36:16,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:36:16,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:36:16,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:36:16,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:36:16,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:36:16,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:36:16,792 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:36:16,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 04:36:16,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc6c0a8a/7dc36114c1074bbbb2c0b7b1e35d31c8/FLAGfdd6df983 [2020-09-25 04:36:17,385 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:36:17,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 04:36:17,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc6c0a8a/7dc36114c1074bbbb2c0b7b1e35d31c8/FLAGfdd6df983 [2020-09-25 04:36:17,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abc6c0a8a/7dc36114c1074bbbb2c0b7b1e35d31c8 [2020-09-25 04:36:17,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:36:17,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:36:17,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:36:17,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:36:17,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:36:17,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:36:17" (1/1) ... [2020-09-25 04:36:17,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3baf0e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:17, skipping insertion in model container [2020-09-25 04:36:17,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:36:17" (1/1) ... [2020-09-25 04:36:17,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:36:17,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:36:17,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:36:17,996 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:36:18,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:36:18,029 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:36:18,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18 WrapperNode [2020-09-25 04:36:18,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:36:18,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:36:18,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:36:18,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:36:18,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... [2020-09-25 04:36:18,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:36:18,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:36:18,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:36:18,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:36:18,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:36:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:36:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:36:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:36:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:36:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:36:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:36:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:36:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:36:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:36:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:36:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:36:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:36:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:36:18,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:36:18,487 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 04:36:18,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:36:18 BoogieIcfgContainer [2020-09-25 04:36:18,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:36:18,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:36:18,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:36:18,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:36:18,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:36:17" (1/3) ... [2020-09-25 04:36:18,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e46a19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:36:18, skipping insertion in model container [2020-09-25 04:36:18,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:36:18" (2/3) ... [2020-09-25 04:36:18,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e46a19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:36:18, skipping insertion in model container [2020-09-25 04:36:18,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:36:18" (3/3) ... [2020-09-25 04:36:18,515 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-09-25 04:36:18,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:36:18,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:36:18,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:36:18,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:36:18,606 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:36:18,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:36:18,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:36:18,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:36:18,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:36:18,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:36:18,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:36:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 04:36:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 04:36:18,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:18,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:18,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:18,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1930258608, now seen corresponding path program 1 times [2020-09-25 04:36:18,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:18,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868537789] [2020-09-25 04:36:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:36:18,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 04:36:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:18,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:36:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:36:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:18,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:18,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:36:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:18,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:36:18,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868537789] [2020-09-25 04:36:18,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:18,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 04:36:18,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996619772] [2020-09-25 04:36:18,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 04:36:18,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:18,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 04:36:18,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 04:36:18,914 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-09-25 04:36:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:18,946 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-09-25 04:36:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 04:36:18,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-25 04:36:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:18,960 INFO L225 Difference]: With dead ends: 48 [2020-09-25 04:36:18,960 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 04:36:18,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 04:36:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 04:36:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 04:36:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 04:36:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-09-25 04:36:19,017 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2020-09-25 04:36:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:19,018 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-09-25 04:36:19,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 04:36:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-09-25 04:36:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 04:36:19,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:19,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:19,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:36:19,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:19,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1900705936, now seen corresponding path program 1 times [2020-09-25 04:36:19,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:19,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392267653] [2020-09-25 04:36:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:36:19,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:36:19,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:19,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:36:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:36:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:36:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:19,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:36:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:19,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:36:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:36:19,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392267653] [2020-09-25 04:36:19,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:19,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:36:19,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921254502] [2020-09-25 04:36:19,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:36:19,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:19,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:36:19,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:19,218 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-09-25 04:36:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:19,251 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-09-25 04:36:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:36:19,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 04:36:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:19,253 INFO L225 Difference]: With dead ends: 29 [2020-09-25 04:36:19,253 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 04:36:19,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 04:36:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-09-25 04:36:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 04:36:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-09-25 04:36:19,265 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-09-25 04:36:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:19,266 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-09-25 04:36:19,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:36:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-09-25 04:36:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 04:36:19,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:19,267 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] [2020-09-25 04:36:19,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:36:19,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1024587775, now seen corresponding path program 1 times [2020-09-25 04:36:19,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:19,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441721028] [2020-09-25 04:36:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:36:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:36:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 04:36:19,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:19,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:36:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:36:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:36:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:36:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:19,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:19,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:19,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:36:19,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:19,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:36:19,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441721028] [2020-09-25 04:36:19,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:19,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:36:19,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712194948] [2020-09-25 04:36:19,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:36:19,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:36:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:19,710 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-09-25 04:36:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:19,739 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 04:36:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:36:19,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-25 04:36:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:19,741 INFO L225 Difference]: With dead ends: 38 [2020-09-25 04:36:19,741 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 04:36:19,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 04:36:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-09-25 04:36:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 04:36:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-25 04:36:19,748 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2020-09-25 04:36:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:19,749 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-25 04:36:19,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:36:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-25 04:36:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 04:36:19,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:19,750 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] [2020-09-25 04:36:19,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:36:19,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:19,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:19,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2065885280, now seen corresponding path program 1 times [2020-09-25 04:36:19,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:19,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379655865] [2020-09-25 04:36:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:20,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:36:20,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:36:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-25 04:36:20,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:20,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:36:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:36:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:36:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:36:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:36:20,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:20,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:36:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:36:20,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379655865] [2020-09-25 04:36:20,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:36:20,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 04:36:20,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330347047] [2020-09-25 04:36:20,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:36:20,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:36:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:36:20,403 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 4 states. [2020-09-25 04:36:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:20,477 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-25 04:36:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:36:20,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-25 04:36:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:20,479 INFO L225 Difference]: With dead ends: 37 [2020-09-25 04:36:20,482 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 04:36:20,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:36:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 04:36:20,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-09-25 04:36:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 04:36:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 04:36:20,496 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-09-25 04:36:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:20,497 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 04:36:20,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:36:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 04:36:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:36:20,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:20,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:20,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:36:20,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:20,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:20,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1729554991, now seen corresponding path program 2 times [2020-09-25 04:36:20,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:20,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003701356] [2020-09-25 04:36:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:36:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:36:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-25 04:36:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:36:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:36:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:36:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:21,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:21,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:21,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:36:21,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:21,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:36:21,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003701356] [2020-09-25 04:36:21,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:36:21,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:36:21,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130590434] [2020-09-25 04:36:21,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:36:21,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:36:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:36:21,362 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 04:36:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:21,401 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 04:36:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:36:21,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 04:36:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:21,403 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:36:21,403 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 04:36:21,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:36:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 04:36:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 04:36:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:36:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 04:36:21,411 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 27 [2020-09-25 04:36:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:21,412 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 04:36:21,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:36:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 04:36:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:36:21,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:21,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:21,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:36:21,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:21,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash -373902912, now seen corresponding path program 3 times [2020-09-25 04:36:21,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:21,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639757926] [2020-09-25 04:36:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:23,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:36:23,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 04:36:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2131 [2020-09-25 04:36:23,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:23,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:36:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:36:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:36:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:36:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:23,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:36:23,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639757926] [2020-09-25 04:36:23,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:36:23,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:36:23,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283953129] [2020-09-25 04:36:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:36:23,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:36:23,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:36:23,599 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 5 states. [2020-09-25 04:36:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:23,665 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 04:36:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:36:23,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 04:36:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:23,667 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:36:23,667 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:36:23,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:36:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:36:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-09-25 04:36:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 04:36:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-25 04:36:23,677 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 32 [2020-09-25 04:36:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:23,677 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-25 04:36:23,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:36:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-25 04:36:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:36:23,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:23,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:23,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:36:23,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 120988159, now seen corresponding path program 4 times [2020-09-25 04:36:23,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:23,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258391571] [2020-09-25 04:36:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:36:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:36:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-09-25 04:36:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:36:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:36:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:36:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:26,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:36:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:26,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:36:26,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258391571] [2020-09-25 04:36:26,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:26,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:36:26,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128979812] [2020-09-25 04:36:26,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:36:26,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:26,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:36:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:26,372 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 3 states. [2020-09-25 04:36:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:26,396 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-09-25 04:36:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:36:26,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-25 04:36:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:26,399 INFO L225 Difference]: With dead ends: 62 [2020-09-25 04:36:26,399 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 04:36:26,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:36:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 04:36:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 04:36:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:36:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-25 04:36:26,410 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2020-09-25 04:36:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:26,411 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-25 04:36:26,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:36:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-25 04:36:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:36:26,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:36:26,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:36:26,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:36:26,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:36:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:36:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash -981133151, now seen corresponding path program 5 times [2020-09-25 04:36:26,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:36:26,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619287852] [2020-09-25 04:36:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:36:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:27,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:27,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:36:27,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:36:27,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-09-25 04:36:27,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:27,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:36:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 04:36:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:36:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:36:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:36:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:36:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:36:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:36:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:36:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:36:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:36:27,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:36:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:36:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:36:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:36:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:36:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:36:27,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619287852] [2020-09-25 04:36:27,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:36:27,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:36:27,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444508503] [2020-09-25 04:36:27,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:36:27,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:36:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:36:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:36:27,304 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2020-09-25 04:36:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:36:27,346 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-25 04:36:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:36:27,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 04:36:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:36:27,348 INFO L225 Difference]: With dead ends: 53 [2020-09-25 04:36:27,348 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:36:27,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:36:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:36:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:36:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:36:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:36:27,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-25 04:36:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:36:27,350 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:36:27,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:36:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:36:27,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:36:27,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:36:27,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:36:27,573 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 04:36:27,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,573 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:36:27,574 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:36:27,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:36:27,574 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 04:36:27,574 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 04:36:27,574 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 04:36:27,574 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 04:36:27,575 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 04:36:27,575 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 04:36:27,575 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2020-09-25 04:36:27,575 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 04:36:27,576 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 04:36:27,576 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 04:36:27,576 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 04:36:27,576 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2020-09-25 04:36:27,576 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2020-09-25 04:36:27,576 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 04:36:27,577 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (< 19 main_~j~0) (= main_~k~0 4)) [2020-09-25 04:36:27,577 INFO L264 CegarLoopResult]: At program point L24-3(lines 18 27) the Hoare annotation is: (or (and (< 19 main_~j~0) (= main_~k~0 4)) (and (<= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2020-09-25 04:36:27,577 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: (or (and (< 19 main_~j~0) (= main_~k~0 4)) (<= main_~i~0 1)) [2020-09-25 04:36:27,577 INFO L268 CegarLoopResult]: For program point L20-3(lines 20 22) no Hoare annotation was computed. [2020-09-25 04:36:27,577 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 04:36:27,577 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 27) the Hoare annotation is: (and (< 19 main_~j~0) (= main_~k~0 4)) [2020-09-25 04:36:27,578 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 04:36:27,579 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 04:36:27,579 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 04:36:27,579 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 04:36:27,579 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 04:36:27,579 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 04:36:27,580 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 04:36:27,580 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 04:36:27,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:36:27 BoogieIcfgContainer [2020-09-25 04:36:27,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:36:27,631 INFO L168 Benchmark]: Toolchain (without parser) took 9880.82 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 102.8 MB in the beginning and 110.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,631 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:36:27,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.88 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,633 INFO L168 Benchmark]: Boogie Preprocessor took 112.26 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,637 INFO L168 Benchmark]: RCFGBuilder took 349.14 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 167.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,640 INFO L168 Benchmark]: TraceAbstraction took 9112.84 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 167.4 MB in the beginning and 110.6 MB in the end (delta: 56.8 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:36:27,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.88 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.26 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.14 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 167.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9112.84 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 167.4 MB in the beginning and 110.6 MB in the end (delta: 56.8 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 19 < j && k == 4 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (19 < j && k == 4) || i <= 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (19 < j && k == 4) || (i <= 0 && j + 100 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 34 SDslu, 236 SDs, 0 SdLazy, 91 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 33 NumberOfFragments, 47 HoareAnnotationTreeSize, 17 FomulaSimplifications, 68 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8673 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 64/85 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...