/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:29:04,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:29:04,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:29:04,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:29:04,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:29:04,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:29:04,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:29:04,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:29:04,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:29:04,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:29:04,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:29:04,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:29:04,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:29:04,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:29:04,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:29:04,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:29:04,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:29:04,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:29:04,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:29:04,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:29:04,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:29:04,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:29:04,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:29:04,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:29:04,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:29:04,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:29:04,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:29:04,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:29:04,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:29:04,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:29:04,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:29:04,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:29:04,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:29:04,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:29:04,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:29:04,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:29:04,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:29:04,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:29:04,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:29:04,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:29:04,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:29:04,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:29:04,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:29:04,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:29:04,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:29:04,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:29:04,203 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:29:04,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:29:04,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:29:04,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:29:04,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:29:04,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:29:04,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:29:04,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:29:04,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:29:04,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:29:04,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:29:04,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:29:04,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:29:04,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:29:04,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:29:04,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:29:04,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:29:04,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:29:04,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:29:04,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:29:04,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:29:04,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:29:04,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:29:04,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:29:04,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:29:04,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:29:04,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:29:04,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:29:04,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:29:04,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:29:04,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:29:04,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 03:29:04,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa427e6b9/54aaf549c1364502a6e03fab1fd2e2c3/FLAG58da6d207 [2020-09-25 03:29:05,414 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:29:05,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 03:29:05,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa427e6b9/54aaf549c1364502a6e03fab1fd2e2c3/FLAG58da6d207 [2020-09-25 03:29:05,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa427e6b9/54aaf549c1364502a6e03fab1fd2e2c3 [2020-09-25 03:29:05,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:29:05,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:29:05,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:05,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:29:05,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:29:05,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:05" (1/1) ... [2020-09-25 03:29:05,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:05, skipping insertion in model container [2020-09-25 03:29:05,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:05" (1/1) ... [2020-09-25 03:29:05,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:29:05,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:29:06,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:06,045 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:29:06,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:06,085 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:29:06,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06 WrapperNode [2020-09-25 03:29:06,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:06,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:29:06,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:29:06,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:29:06,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... [2020-09-25 03:29:06,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:29:06,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:29:06,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:29:06,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:29:06,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:29:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:29:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:29:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:29:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:29:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:29:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:29:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:29:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:29:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:29:06,611 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:29:06,611 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 03:29:06,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:06 BoogieIcfgContainer [2020-09-25 03:29:06,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:29:06,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:29:06,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:29:06,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:29:06,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:29:05" (1/3) ... [2020-09-25 03:29:06,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b009bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:06, skipping insertion in model container [2020-09-25 03:29:06,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:06" (2/3) ... [2020-09-25 03:29:06,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b009bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:06, skipping insertion in model container [2020-09-25 03:29:06,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:06" (3/3) ... [2020-09-25 03:29:06,631 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-25 03:29:06,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:29:06,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:29:06,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:29:06,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:29:06,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:29:06,706 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:29:06,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:29:06,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:29:06,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:29:06,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:29:06,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:29:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 03:29:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 03:29:06,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:06,739 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] [2020-09-25 03:29:06,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:06,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-25 03:29:06,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:06,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787956178] [2020-09-25 03:29:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:07,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:07,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:29:07,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:29:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 03:29:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:29:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:07,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:07,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:29:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:07,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787956178] [2020-09-25 03:29:07,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:29:07,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:29:07,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891318277] [2020-09-25 03:29:07,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:29:07,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:07,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:29:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:29:07,398 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-25 03:29:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:07,502 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-25 03:29:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:29:07,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 03:29:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:07,520 INFO L225 Difference]: With dead ends: 105 [2020-09-25 03:29:07,521 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 03:29:07,527 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 03:29:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 03:29:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-25 03:29:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:29:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 03:29:07,596 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-25 03:29:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:07,597 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 03:29:07,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:29:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 03:29:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:29:07,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:07,599 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] [2020-09-25 03:29:07,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:29:07,600 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-25 03:29:07,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:07,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785884843] [2020-09-25 03:29:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:08,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:29:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:29:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-25 03:29:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:29:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:29:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:29:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:29:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:08,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785884843] [2020-09-25 03:29:08,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:08,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:29:08,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309568224] [2020-09-25 03:29:08,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:29:08,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:08,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:29:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:29:08,324 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-09-25 03:29:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:08,478 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 03:29:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:29:08,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 03:29:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:08,481 INFO L225 Difference]: With dead ends: 92 [2020-09-25 03:29:08,481 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:29:08,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:29:08,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:29:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 51. [2020-09-25 03:29:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 03:29:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-09-25 03:29:08,494 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 27 [2020-09-25 03:29:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:08,494 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-09-25 03:29:08,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:29:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-09-25 03:29:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 03:29:08,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:08,496 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:29:08,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:29:08,496 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-25 03:29:08,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:08,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573563397] [2020-09-25 03:29:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:08,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:29:08,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:29:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 03:29:08,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:29:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:29:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:08,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:08,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:08,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:29:08,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:09,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573563397] [2020-09-25 03:29:09,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:09,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:29:09,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829434073] [2020-09-25 03:29:09,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:29:09,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:09,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:29:09,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:29:09,007 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 9 states. [2020-09-25 03:29:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:09,213 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 03:29:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:29:09,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-25 03:29:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:09,215 INFO L225 Difference]: With dead ends: 135 [2020-09-25 03:29:09,216 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 03:29:09,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:29:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 03:29:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2020-09-25 03:29:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:29:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-09-25 03:29:09,227 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 31 [2020-09-25 03:29:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:09,227 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-09-25 03:29:09,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:29:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-09-25 03:29:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:29:09,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:09,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:09,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:29:09,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-25 03:29:09,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:09,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084555613] [2020-09-25 03:29:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:29:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:29:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-09-25 03:29:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:29:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:29:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:10,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:10,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084555613] [2020-09-25 03:29:10,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:10,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:29:10,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150616864] [2020-09-25 03:29:10,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:29:10,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:10,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:29:10,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:29:10,281 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 11 states. [2020-09-25 03:29:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:10,524 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-09-25 03:29:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:29:10,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-25 03:29:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:10,526 INFO L225 Difference]: With dead ends: 118 [2020-09-25 03:29:10,526 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 03:29:10,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:29:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 03:29:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-25 03:29:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:29:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-25 03:29:10,535 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-25 03:29:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:10,535 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-25 03:29:10,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:29:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-25 03:29:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 03:29:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:10,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:10,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:29:10,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-25 03:29:10,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:10,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636452876] [2020-09-25 03:29:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:11,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:11,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:29:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:29:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-09-25 03:29:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:29:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:29:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:11,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:11,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:11,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636452876] [2020-09-25 03:29:11,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:11,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:29:11,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989931534] [2020-09-25 03:29:11,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:29:11,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:29:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:29:11,843 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-25 03:29:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:12,121 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-25 03:29:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:29:12,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-25 03:29:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:12,123 INFO L225 Difference]: With dead ends: 121 [2020-09-25 03:29:12,123 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 03:29:12,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:29:12,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 03:29:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-25 03:29:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 03:29:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-25 03:29:12,132 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-25 03:29:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:12,132 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-25 03:29:12,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:29:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-25 03:29:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 03:29:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:12,134 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:12,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:29:12,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:12,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-25 03:29:12,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:12,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82844333] [2020-09-25 03:29:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:29:13,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:29:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-09-25 03:29:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:29:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:29:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:14,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:14,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:14,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:14,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82844333] [2020-09-25 03:29:14,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:14,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:29:14,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320626553] [2020-09-25 03:29:14,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:29:14,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:14,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:29:14,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:29:14,212 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 15 states. [2020-09-25 03:29:14,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:14,679 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-25 03:29:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:29:14,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-09-25 03:29:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:14,682 INFO L225 Difference]: With dead ends: 129 [2020-09-25 03:29:14,682 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 03:29:14,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-09-25 03:29:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 03:29:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-25 03:29:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:29:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 03:29:14,690 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-25 03:29:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:14,691 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 03:29:14,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:29:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 03:29:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:29:14,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:14,693 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:14,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:29:14,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:14,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-25 03:29:14,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:14,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007600675] [2020-09-25 03:29:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:15,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:16,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:29:16,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:29:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-09-25 03:29:16,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:29:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:29:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:19,054 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 83 DAG size of output: 13 [2020-09-25 03:29:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:19,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:29:19,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:19,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007600675] [2020-09-25 03:29:19,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:19,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:29:19,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813747851] [2020-09-25 03:29:19,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:29:19,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:19,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:29:19,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:29:19,116 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 17 states. [2020-09-25 03:29:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:19,746 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2020-09-25 03:29:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 03:29:19,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-09-25 03:29:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:19,749 INFO L225 Difference]: With dead ends: 112 [2020-09-25 03:29:19,752 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:29:19,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2020-09-25 03:29:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:29:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2020-09-25 03:29:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 03:29:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-09-25 03:29:19,769 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 47 [2020-09-25 03:29:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:19,770 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-09-25 03:29:19,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:29:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-09-25 03:29:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:29:19,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:19,775 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:19,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:29:19,776 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-25 03:29:19,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:19,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536105346] [2020-09-25 03:29:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:29:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:29:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-09-25 03:29:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:29:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:29:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:24,153 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 83 DAG size of output: 13 [2020-09-25 03:29:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:24,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:24,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:29:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:24,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536105346] [2020-09-25 03:29:24,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:24,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 03:29:24,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606112032] [2020-09-25 03:29:24,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 03:29:24,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:24,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 03:29:24,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:29:24,226 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 19 states. [2020-09-25 03:29:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:24,965 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2020-09-25 03:29:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 03:29:24,971 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-09-25 03:29:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:24,972 INFO L225 Difference]: With dead ends: 175 [2020-09-25 03:29:24,973 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 03:29:24,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 03:29:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 03:29:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2020-09-25 03:29:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:29:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 03:29:24,986 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 51 [2020-09-25 03:29:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:24,987 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 03:29:24,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 03:29:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 03:29:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:29:24,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:24,989 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:24,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:29:24,989 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash 737585385, now seen corresponding path program 8 times [2020-09-25 03:29:24,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:24,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407710205] [2020-09-25 03:29:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:26,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 03:29:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:29:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-09-25 03:29:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:29:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:29:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:27,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:27,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:27,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407710205] [2020-09-25 03:29:27,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:27,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 03:29:27,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416989528] [2020-09-25 03:29:27,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 03:29:27,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 03:29:27,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:29:27,060 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 19 states. [2020-09-25 03:29:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:27,782 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2020-09-25 03:29:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 03:29:27,783 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-25 03:29:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:27,784 INFO L225 Difference]: With dead ends: 158 [2020-09-25 03:29:27,784 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 03:29:27,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 03:29:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 03:29:27,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-09-25 03:29:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 03:29:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 03:29:27,798 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2020-09-25 03:29:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:27,799 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 03:29:27,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 03:29:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 03:29:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:29:27,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:27,801 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:27,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:29:27,802 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535194, now seen corresponding path program 9 times [2020-09-25 03:29:27,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:27,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826740063] [2020-09-25 03:29:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:30,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:30,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:29:30,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:29:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-09-25 03:29:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:29:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:29:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:30,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826740063] [2020-09-25 03:29:30,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:30,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 03:29:30,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777808377] [2020-09-25 03:29:30,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 03:29:30,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:30,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 03:29:30,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:29:30,909 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 23 states. [2020-09-25 03:29:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:31,922 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-09-25 03:29:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 03:29:31,922 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-09-25 03:29:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:31,924 INFO L225 Difference]: With dead ends: 124 [2020-09-25 03:29:31,924 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 03:29:31,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 03:29:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 03:29:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 83. [2020-09-25 03:29:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 03:29:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-25 03:29:31,939 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 59 [2020-09-25 03:29:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:31,939 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-25 03:29:31,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 03:29:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-25 03:29:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 03:29:31,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:31,943 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:31,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:29:31,944 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash 111341795, now seen corresponding path program 10 times [2020-09-25 03:29:31,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:31,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929576924] [2020-09-25 03:29:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:34,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 03:29:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:29:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2579 [2020-09-25 03:29:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 03:29:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:29:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 03:29:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:29:35,426 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2020-09-25 03:29:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:35,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:35,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:29:35,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:29:35,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:35,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929576924] [2020-09-25 03:29:35,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:29:35,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 03:29:35,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894503015] [2020-09-25 03:29:35,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 03:29:35,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 03:29:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 03:29:35,528 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 25 states. [2020-09-25 03:29:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:36,788 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2020-09-25 03:29:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 03:29:36,790 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2020-09-25 03:29:36,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:36,791 INFO L225 Difference]: With dead ends: 166 [2020-09-25 03:29:36,791 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:29:36,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 03:29:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:29:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:29:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:29:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:29:36,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-25 03:29:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:36,800 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:29:36,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 03:29:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:29:36,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:29:36,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:29:36,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:29:37,156 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 29 [2020-09-25 03:29:37,161 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:29:37,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:29:37,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:29:37,161 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:29:37,161 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 03:29:37,162 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 03:29:37,163 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 03:29:37,163 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 03:29:37,163 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 03:29:37,163 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:29:37,163 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-25 03:29:37,163 INFO L264 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 03:29:37,164 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 03:29:37,164 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 03:29:37,164 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 03:29:37,164 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 03:29:37,164 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-25 03:29:37,164 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= main_~v~0 8) (< 0 (+ (div main_~v~0 4294967296) 1)))) [2020-09-25 03:29:37,165 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) [2020-09-25 03:29:37,165 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-25 03:29:37,165 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 03:29:37,165 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 03:29:37,165 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-25 03:29:37,165 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-25 03:29:37,166 INFO L264 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 03:29:37,166 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-25 03:29:37,166 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-25 03:29:37,166 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-25 03:29:37,166 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 03:29:37,166 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-25 03:29:37,166 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 03:29:37,167 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 03:29:37,167 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-25 03:29:37,167 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 03:29:37,167 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 03:29:37,167 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 03:29:37,167 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 03:29:37,167 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 03:29:37,168 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 03:29:37,168 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 03:29:37,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:29:37 BoogieIcfgContainer [2020-09-25 03:29:37,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:29:37,197 INFO L168 Benchmark]: Toolchain (without parser) took 31431.72 ms. Allocated memory was 138.9 MB in the beginning and 400.0 MB in the end (delta: 261.1 MB). Free memory was 102.0 MB in the beginning and 102.4 MB in the end (delta: -349.1 kB). Peak memory consumption was 260.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,198 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.41 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,200 INFO L168 Benchmark]: Boogie Preprocessor took 117.69 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,200 INFO L168 Benchmark]: RCFGBuilder took 411.00 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 164.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,201 INFO L168 Benchmark]: TraceAbstraction took 30577.70 ms. Allocated memory was 200.8 MB in the beginning and 400.0 MB in the end (delta: 199.2 MB). Free memory was 163.3 MB in the beginning and 102.4 MB in the end (delta: 60.9 MB). Peak memory consumption was 260.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:29:37,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.41 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.69 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.00 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 164.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30577.70 ms. Allocated memory was 200.8 MB in the beginning and 400.0 MB in the end (delta: 199.2 MB). Free memory was 163.3 MB in the beginning and 102.4 MB in the end (delta: 60.9 MB). Peak memory consumption was 260.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((v <= 9 && 9 <= v) || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v)) || (v <= 8 && 0 < v / 4294967296 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.0s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 517 SDslu, 6884 SDs, 0 SdLazy, 3527 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 290 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 24 PreInvPairs, 44 NumberOfFragments, 166 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 105550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...