/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:21:04,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:21:04,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:21:04,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:21:04,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:21:04,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:21:04,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:21:04,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:21:04,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:21:04,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:21:04,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:21:04,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:21:04,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:21:04,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:21:04,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:21:04,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:21:04,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:21:04,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:21:04,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:21:04,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:21:04,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:21:04,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:21:04,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:21:04,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:21:04,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:21:04,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:21:04,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:21:04,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:21:04,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:21:04,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:21:04,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:21:04,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:21:04,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:21:04,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:21:04,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:21:04,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:21:04,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:21:04,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:21:04,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:21:04,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:21:04,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:21:04,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:21:04,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:21:04,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:21:04,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:21:04,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:21:04,163 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:21:04,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:21:04,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:21:04,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:21:04,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:21:04,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:21:04,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:21:04,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:21:04,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:21:04,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:21:04,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:21:04,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:21:04,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:21:04,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:21:04,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:21:04,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:21:04,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:21:04,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:21:04,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:21:04,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:21:04,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:21:04,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:21:04,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:21:04,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:21:04,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:21:04,168 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;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;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;log-additional-information=true; [2020-09-24 17:21:04,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:21:04,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:21:04,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:21:04,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:21:04,658 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:21:04,659 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-24 17:21:04,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd94980/9f034fa22a3247cb8a40c74de92a1ce7/FLAGa172dd206 [2020-09-24 17:21:05,381 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:21:05,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-24 17:21:05,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd94980/9f034fa22a3247cb8a40c74de92a1ce7/FLAGa172dd206 [2020-09-24 17:21:05,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddfd94980/9f034fa22a3247cb8a40c74de92a1ce7 [2020-09-24 17:21:05,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:21:05,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:21:05,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:21:05,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:21:05,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:21:05,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:21:05" (1/1) ... [2020-09-24 17:21:05,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:05, skipping insertion in model container [2020-09-24 17:21:05,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:21:05" (1/1) ... [2020-09-24 17:21:05,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:21:05,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:21:06,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:21:06,030 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:21:06,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:21:06,181 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:21:06,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06 WrapperNode [2020-09-24 17:21:06,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:21:06,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:21:06,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:21:06,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:21:06,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (1/1) ... [2020-09-24 17:21:06,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:21:06,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:21:06,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:21:06,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:21:06,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (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 [2020-09-24 17:21:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:21:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:21:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:21:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:21:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:21:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:21:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:21:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:21:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:21:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:21:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:21:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:21:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:21:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:21:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:21:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:21:06,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:21:06,735 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:21:06,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:21:06 BoogieIcfgContainer [2020-09-24 17:21:06,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:21:06,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:21:06,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:21:06,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:21:06,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:21:05" (1/3) ... [2020-09-24 17:21:06,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65850573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:21:06, skipping insertion in model container [2020-09-24 17:21:06,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:21:06" (2/3) ... [2020-09-24 17:21:06,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65850573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:21:06, skipping insertion in model container [2020-09-24 17:21:06,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:21:06" (3/3) ... [2020-09-24 17:21:06,755 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-24 17:21:06,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:21:06,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-24 17:21:06,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-24 17:21:06,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:21:06,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:21:06,853 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:21:06,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:21:06,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:21:06,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:21:06,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:21:06,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:21:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-24 17:21:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:21:06,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:06,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:06,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash 477414535, now seen corresponding path program 1 times [2020-09-24 17:21:06,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:06,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832227524] [2020-09-24 17:21:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:07,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:07,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 17:21:07,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-24 17:21:07,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:21:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 17:21:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:21:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:21:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:21:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:07,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832227524] [2020-09-24 17:21:07,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:07,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:21:07,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358166316] [2020-09-24 17:21:07,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:21:07,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:21:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:21:07,774 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 5 states. [2020-09-24 17:21:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:08,326 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2020-09-24 17:21:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:21:08,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 17:21:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:08,343 INFO L225 Difference]: With dead ends: 223 [2020-09-24 17:21:08,344 INFO L226 Difference]: Without dead ends: 116 [2020-09-24 17:21:08,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:21:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-24 17:21:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-09-24 17:21:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 17:21:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-24 17:21:08,404 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 30 [2020-09-24 17:21:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:08,404 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-24 17:21:08,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:21:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-24 17:21:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 17:21:08,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:08,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:08,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:21:08,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:08,407 INFO L82 PathProgramCache]: Analyzing trace with hash -921386779, now seen corresponding path program 1 times [2020-09-24 17:21:08,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:08,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747358347] [2020-09-24 17:21:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:21:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 17:21:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:21:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:21:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:08,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:21:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 17:21:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:08,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747358347] [2020-09-24 17:21:08,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:08,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:21:08,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835400812] [2020-09-24 17:21:08,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:21:08,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:08,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:21:08,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:21:08,663 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 6 states. [2020-09-24 17:21:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:08,908 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-09-24 17:21:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:21:08,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-24 17:21:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:08,911 INFO L225 Difference]: With dead ends: 93 [2020-09-24 17:21:08,911 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 17:21:08,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:21:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 17:21:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2020-09-24 17:21:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:21:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-24 17:21:08,922 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 31 [2020-09-24 17:21:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:08,923 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-24 17:21:08,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:21:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-24 17:21:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 17:21:08,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:08,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:08,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:21:08,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash -223412704, now seen corresponding path program 1 times [2020-09-24 17:21:08,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:08,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874898494] [2020-09-24 17:21:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:09,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:09,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:21:09,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 17:21:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:21:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:21:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:21:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:09,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:21:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:09,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874898494] [2020-09-24 17:21:09,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:09,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:21:09,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561174290] [2020-09-24 17:21:09,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:21:09,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:21:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:21:09,156 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2020-09-24 17:21:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:09,314 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-09-24 17:21:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:21:09,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-24 17:21:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:09,316 INFO L225 Difference]: With dead ends: 101 [2020-09-24 17:21:09,316 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 17:21:09,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:21:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 17:21:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2020-09-24 17:21:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:21:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-09-24 17:21:09,338 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 33 [2020-09-24 17:21:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:09,338 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-09-24 17:21:09,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:21:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-09-24 17:21:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:21:09,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:09,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:09,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:21:09,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash 276122014, now seen corresponding path program 1 times [2020-09-24 17:21:09,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:09,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739723702] [2020-09-24 17:21:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:21:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:21:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-24 17:21:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:21:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:21:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 17:21:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:10,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:21:10,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:10,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739723702] [2020-09-24 17:21:10,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:10,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:21:10,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440047394] [2020-09-24 17:21:10,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:21:10,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:21:10,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:21:10,380 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 6 states. [2020-09-24 17:21:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:10,617 INFO L93 Difference]: Finished difference Result 171 states and 179 transitions. [2020-09-24 17:21:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:21:10,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 17:21:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:10,620 INFO L225 Difference]: With dead ends: 171 [2020-09-24 17:21:10,620 INFO L226 Difference]: Without dead ends: 129 [2020-09-24 17:21:10,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:21:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-24 17:21:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 93. [2020-09-24 17:21:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 17:21:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-09-24 17:21:10,632 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 52 [2020-09-24 17:21:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:10,633 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-09-24 17:21:10,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:21:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-09-24 17:21:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:21:10,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:10,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:10,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:21:10,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash -94524522, now seen corresponding path program 1 times [2020-09-24 17:21:10,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:10,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241926642] [2020-09-24 17:21:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:21:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 17:21:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:21:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 17:21:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:21:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:10,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:10,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:21:10,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:10,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:21:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:10,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241926642] [2020-09-24 17:21:10,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:10,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:21:10,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738303355] [2020-09-24 17:21:10,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:21:10,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:10,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:21:10,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:21:10,882 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 6 states. [2020-09-24 17:21:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:11,171 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2020-09-24 17:21:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:21:11,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-24 17:21:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:11,173 INFO L225 Difference]: With dead ends: 135 [2020-09-24 17:21:11,173 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 17:21:11,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:21:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 17:21:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2020-09-24 17:21:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 17:21:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-09-24 17:21:11,199 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 53 [2020-09-24 17:21:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:11,200 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-09-24 17:21:11,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:21:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-09-24 17:21:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:21:11,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:11,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:11,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:21:11,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash 893991191, now seen corresponding path program 1 times [2020-09-24 17:21:11,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:11,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935684823] [2020-09-24 17:21:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:11,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:11,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:21:11,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 17:21:11,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:21:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:21:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:21:11,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:11,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:21:11,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:11,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:11,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935684823] [2020-09-24 17:21:11,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:11,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:21:11,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516605226] [2020-09-24 17:21:11,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:21:11,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:11,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:21:11,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:21:11,627 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 6 states. [2020-09-24 17:21:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:11,929 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2020-09-24 17:21:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:21:11,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-24 17:21:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:11,932 INFO L225 Difference]: With dead ends: 188 [2020-09-24 17:21:11,932 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 17:21:11,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:21:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 17:21:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 70. [2020-09-24 17:21:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 17:21:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 17:21:11,953 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 53 [2020-09-24 17:21:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:11,953 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 17:21:11,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:21:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 17:21:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 17:21:11,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:11,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:11,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:21:11,957 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2013372873, now seen corresponding path program 1 times [2020-09-24 17:21:11,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:11,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558756025] [2020-09-24 17:21:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:12,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:13,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:13,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 17:21:13,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:21:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-09-24 17:21:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:21:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:21:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:21:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:14,402 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 49 [2020-09-24 17:21:14,681 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-09-24 17:21:15,138 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 69 [2020-09-24 17:21:15,363 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 60 [2020-09-24 17:21:15,602 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2020-09-24 17:21:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:21:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:21:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:21:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:21:15,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:21:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:21:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:21:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:21:15,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558756025] [2020-09-24 17:21:15,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:21:15,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 17:21:15,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251827665] [2020-09-24 17:21:15,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:21:15,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:21:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:21:15,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:21:15,882 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 14 states. [2020-09-24 17:21:16,216 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-24 17:21:20,873 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 80 [2020-09-24 17:21:27,373 WARN L193 SmtUtils]: Spent 6.41 s on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 17:21:29,679 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 17:21:29,848 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-09-24 17:21:30,029 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-24 17:21:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:21:30,211 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-09-24 17:21:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:21:30,212 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-24 17:21:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:21:30,214 INFO L225 Difference]: With dead ends: 94 [2020-09-24 17:21:30,214 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 17:21:30,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:21:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 17:21:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-09-24 17:21:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 17:21:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-24 17:21:30,222 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 55 [2020-09-24 17:21:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:21:30,222 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-24 17:21:30,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:21:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-24 17:21:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 17:21:30,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:21:30,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:21:30,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:21:30,224 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:21:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:21:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 511170824, now seen corresponding path program 1 times [2020-09-24 17:21:30,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:21:30,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515566058] [2020-09-24 17:21:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:21:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:21:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:21:35,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:21:35,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 17:21:35,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:21:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5619 [2020-09-24 17:21:35,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:21:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:21:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:21:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:21:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:21:39,001 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 18 [2020-09-24 17:21:41,078 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse23 (div c_main_~main__index2~0 4294967296))) (let ((.cse12 (* 4294967296 .cse23))) (let ((.cse11 (<= (+ c_main_~main__index2~0 2) .cse12))) (or (let ((.cse21 (div c_main_~main__index1~0 4294967296))) (let ((.cse22 (* 4294967296 .cse21)) (.cse0 (* c_main_~main__index2~0 (- 1))) (.cse16 (* .cse21 4294967296))) (let ((.cse14 (div (+ .cse0 .cse16 4294967294) 4294967296)) (.cse24 (+ .cse22 2147483647))) (let ((.cse3 (<= c_main_~main__index1~0 .cse24)) (.cse5 (< .cse24 c_main_~main__index1~0)) (.cse6 (* c_main_~main__index1~0 (- 1))) (.cse7 (* .cse23 (- 4294967296))) (.cse1 (* .cse21 (- 4294967296))) (.cse2 (* .cse14 (- 4294967296)))) (let ((.cse4 (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ c_main_~main__index1~0 .cse0 .cse1 .cse2 (- 1)) 4294967296))))) (.cse9 (<= c_main_~main__index1~0 (+ .cse22 4294967295))) (.cse15 (<= (+ c_main_~main__index2~0 .cse22 1) (+ c_main_~main__index1~0 .cse12))) (.cse8 (<= 1 (+ (* 4294967296 (div (+ .cse6 c_main_~main__index2~0 .cse7 1) 4294967296)) c_main_~main__index1~0))) (.cse17 (let ((.cse18 (select |c_#memory_int| |c_main_~#main__array~0.base|)) (.cse19 (* c_main_~main__index1~0 4)) (.cse20 (* .cse21 (- 17179869184)))) (or (and (= (select .cse18 (+ .cse19 |c_main_~#main__array~0.offset| .cse20)) |c_main_#t~mem4|) .cse3) (and (= (select .cse18 (+ .cse19 |c_main_~#main__array~0.offset| .cse20 (- 17179869184))) |c_main_#t~mem4|) .cse5))))) (and (or (and (or (and (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ c_main_~main__index1~0 .cse0 .cse1 .cse2 4294967295) 4294967296)))) .cse3) (and .cse4 .cse5)) .cse5) (<= 1 (+ (* 4294967296 (div (+ .cse0 .cse2 2147483646) 4294967296)) c_main_~main__index1~0))) (or (and (or (and .cse5 (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ .cse6 c_main_~main__index2~0 .cse7 4294967297) 4294967296))))) (and .cse8 .cse3)) (or (and .cse5 (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ c_main_~main__index1~0 .cse0 .cse1 .cse2 (- 4294967297)) 4294967296))))) (and .cse4 .cse3))) (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ c_main_~main__index2~0 .cse1 .cse7 (- 2147483647)) 4294967296))))) .cse9 (or (let ((.cse10 (or .cse8 .cse11))) (and .cse10 (or .cse11 (and .cse10 (or (<= c_main_~main__index2~0 (+ .cse12 2147483646)) (and (or (and .cse10 (let ((.cse13 (* 4294967296 .cse14))) (or (and .cse5 (<= (+ .cse13 .cse12 1) c_main_~main__index1~0)) (and (<= (+ .cse13 .cse12) (+ c_main_~main__index1~0 4294967295)) .cse3))) .cse15) .cse11) .cse9 (or (and .cse5 (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ (* (div (+ c_main_~main__index1~0 .cse0 4294967294) 4294967296) (- 4294967296)) .cse6 .cse16 .cse7 4294967295) 4294967296))))) (and (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ (* (div (+ c_main_~main__index1~0 .cse0 8589934590) 4294967296) (- 4294967296)) .cse6 .cse16 .cse7 4294967295) 4294967296)))) .cse3)) .cse15 .cse8 .cse17)))) .cse9 .cse15 .cse8 (<= 1 (+ c_main_~main__index1~0 (* 4294967296 (div (+ .cse6 4294967295) 4294967296)))))) .cse11) .cse15 .cse8 .cse17)))))) .cse11)))) is different from false [2020-09-24 17:21:58,439 WARN L193 SmtUtils]: Spent 16.77 s on a formula simplification. DAG size of input: 236 DAG size of output: 82