/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:45:44,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:45:44,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:45:44,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:45:44,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:45:44,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:45:44,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:45:44,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:45:44,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:45:44,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:45:44,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:45:44,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:45:44,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:45:44,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:45:44,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:45:44,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:45:44,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:45:44,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:45:44,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:45:44,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:45:44,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:45:44,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:45:44,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:45:44,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:45:44,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:45:44,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:45:44,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:45:44,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:45:44,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:45:44,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:45:44,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:45:44,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:45:44,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:45:44,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:45:44,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:45:44,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:45:44,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:45:44,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:45:44,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:45:44,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:45:44,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:45:44,259 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 14:45:44,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:45:44,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:45:44,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:45:44,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:45:44,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:45:44,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:45:44,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:45:44,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:45:44,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:45:44,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:45:44,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:45:44,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:45:44,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:45:44,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:45:44,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:45:44,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:45:44,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:45:44,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:45:44,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:45:44,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:45:44,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:45:44,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:45:44,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:45:44,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:45:44,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:45:44,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:45:44,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:45:44,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:45:44,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:45:44,315 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:45:44,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:45:44,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:45:44,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:45:44,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:45:44,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:45:44,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 14:45:44,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e80f92a9d/8eaa11ec2d804389ab50eb2cde7896ac/FLAG81d7f5680 [2020-09-25 14:45:45,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:45:45,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 14:45:45,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e80f92a9d/8eaa11ec2d804389ab50eb2cde7896ac/FLAG81d7f5680 [2020-09-25 14:45:45,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e80f92a9d/8eaa11ec2d804389ab50eb2cde7896ac [2020-09-25 14:45:45,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:45:45,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:45:45,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:45:45,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:45:45,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:45:45,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:45:45" (1/1) ... [2020-09-25 14:45:45,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a6d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:45, skipping insertion in model container [2020-09-25 14:45:45,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:45:45" (1/1) ... [2020-09-25 14:45:45,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:45:45,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:45:46,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:45:46,103 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:45:46,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:45:46,148 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:45:46,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46 WrapperNode [2020-09-25 14:45:46,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:45:46,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:45:46,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:45:46,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:45:46,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (1/1) ... [2020-09-25 14:45:46,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:45:46,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:45:46,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:45:46,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:45:46,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (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 14:45:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:45:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:45:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:45:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 14:45:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:45:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:45:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:45:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:45:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 14:45:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:45:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:45:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:45:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:45:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:45:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:45:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:45:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:45:46,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:45:46,744 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 14:45:46,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:45:46 BoogieIcfgContainer [2020-09-25 14:45:46,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:45:46,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:45:46,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:45:46,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:45:46,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:45:45" (1/3) ... [2020-09-25 14:45:46,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1566dce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:45:46, skipping insertion in model container [2020-09-25 14:45:46,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:45:46" (2/3) ... [2020-09-25 14:45:46,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1566dce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:45:46, skipping insertion in model container [2020-09-25 14:45:46,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:45:46" (3/3) ... [2020-09-25 14:45:46,762 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 14:45:46,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:45:46,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:45:46,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:45:46,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:45:46,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:45:46,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:45:46,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:45:46,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:45:46,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:45:46,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:45:46,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:45:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 14:45:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:45:46,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:46,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:46,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 14:45:46,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:46,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011203067] [2020-09-25 14:45:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:47,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:45:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 14:45:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:45:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:45:47,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:47,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:45:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:47,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:47,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:45:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:45:47,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:47,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:45:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:47,501 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 14:45:47,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011203067] [2020-09-25 14:45:47,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:45:47,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:45:47,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885565351] [2020-09-25 14:45:47,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:45:47,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:47,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:45:47,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:45:47,536 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-09-25 14:45:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:47,735 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 14:45:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:45:47,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 14:45:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:47,752 INFO L225 Difference]: With dead ends: 94 [2020-09-25 14:45:47,752 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 14:45:47,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:45:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 14:45:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-09-25 14:45:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 14:45:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-09-25 14:45:47,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-09-25 14:45:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:47,815 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-09-25 14:45:47,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:45:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-09-25 14:45:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:45:47,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:47,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:47,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:45:47,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash 31734745, now seen corresponding path program 1 times [2020-09-25 14:45:47,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:47,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147474046] [2020-09-25 14:45:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:48,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:48,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:45:48,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 14:45:48,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:48,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:45:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:45:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:45:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:48,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:45:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:48,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:48,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:45:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:45:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:45:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:45:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:45:48,456 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 14:45:48,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147474046] [2020-09-25 14:45:48,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:45:48,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:45:48,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109225763] [2020-09-25 14:45:48,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:45:48,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:48,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:45:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:45:48,465 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2020-09-25 14:45:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:48,787 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-09-25 14:45:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:45:48,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-25 14:45:48,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:48,790 INFO L225 Difference]: With dead ends: 81 [2020-09-25 14:45:48,792 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 14:45:48,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:45:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 14:45:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-09-25 14:45:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:45:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 14:45:48,818 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 14:45:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:48,819 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 14:45:48,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:45:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 14:45:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:45:48,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:48,823 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] [2020-09-25 14:45:48,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:45:48,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash -579567659, now seen corresponding path program 1 times [2020-09-25 14:45:48,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:48,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976715496] [2020-09-25 14:45:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:49,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:45:49,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-25 14:45:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:49,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:45:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:45:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:49,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:49,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:49,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:45:49,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:49,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:49,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:45:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:45:49,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:49,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:45:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:45:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:49,488 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 14:45:49,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976715496] [2020-09-25 14:45:49,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:45:49,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:45:49,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178310466] [2020-09-25 14:45:49,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:45:49,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:49,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:45:49,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:45:49,492 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-09-25 14:45:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:49,787 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 14:45:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:45:49,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 14:45:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:49,789 INFO L225 Difference]: With dead ends: 87 [2020-09-25 14:45:49,789 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:45:49,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:45:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:45:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-09-25 14:45:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 14:45:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-09-25 14:45:49,799 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 35 [2020-09-25 14:45:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:49,799 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-09-25 14:45:49,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:45:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-09-25 14:45:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 14:45:49,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:49,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:45:49,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:45:49,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash 556324561, now seen corresponding path program 2 times [2020-09-25 14:45:49,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:49,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885967458] [2020-09-25 14:45:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:50,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:50,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:45:50,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-25 14:45:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:50,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:45:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:45:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:50,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:50,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:50,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:45:50,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:50,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:50,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:50,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:45:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:45:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:45:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:45:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:45:50,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885967458] [2020-09-25 14:45:50,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:45:50,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:45:50,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551118906] [2020-09-25 14:45:50,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:45:50,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:45:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:45:50,707 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 11 states. [2020-09-25 14:45:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:51,164 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-25 14:45:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:45:51,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-25 14:45:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:51,166 INFO L225 Difference]: With dead ends: 93 [2020-09-25 14:45:51,167 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 14:45:51,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:45:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 14:45:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-09-25 14:45:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 14:45:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 14:45:51,188 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 41 [2020-09-25 14:45:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:51,190 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 14:45:51,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:45:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 14:45:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:45:51,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:51,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:51,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:45:51,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash 946274509, now seen corresponding path program 3 times [2020-09-25 14:45:51,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:51,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700223835] [2020-09-25 14:45:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:52,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:45:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-09-25 14:45:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:52,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:45:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:45:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:52,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:52,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:45:52,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:52,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:52,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:52,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:52,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:45:52,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 14:45:52,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:52,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:52,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:45:52,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:52,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:45:52,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:45:52,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700223835] [2020-09-25 14:45:52,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:45:52,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:45:52,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855621983] [2020-09-25 14:45:52,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:45:52,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:45:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:45:52,781 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 13 states. [2020-09-25 14:45:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:53,261 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-09-25 14:45:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:45:53,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-25 14:45:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:53,263 INFO L225 Difference]: With dead ends: 99 [2020-09-25 14:45:53,263 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 14:45:53,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:45:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 14:45:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-09-25 14:45:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 14:45:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-25 14:45:53,273 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 47 [2020-09-25 14:45:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:53,273 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-25 14:45:53,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:45:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-25 14:45:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:45:53,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:53,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:53,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:45:53,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1531231689, now seen corresponding path program 4 times [2020-09-25 14:45:53,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:53,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327649244] [2020-09-25 14:45:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:54,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:54,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 14:45:54,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-09-25 14:45:54,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:54,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:45:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:45:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:54,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:54,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:54,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:45:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:54,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:54,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:54,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:45:54,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:54,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 14:45:54,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:54,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:45:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:45:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:45:55,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327649244] [2020-09-25 14:45:55,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:45:55,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:45:55,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793562375] [2020-09-25 14:45:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:45:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:45:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:45:55,062 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 15 states. [2020-09-25 14:45:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:55,767 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2020-09-25 14:45:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:45:55,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-09-25 14:45:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:55,770 INFO L225 Difference]: With dead ends: 105 [2020-09-25 14:45:55,770 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 14:45:55,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-25 14:45:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 14:45:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-09-25 14:45:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 14:45:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 14:45:55,791 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 53 [2020-09-25 14:45:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:55,792 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 14:45:55,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:45:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 14:45:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 14:45:55,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:55,800 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:55,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:45:55,801 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1250414021, now seen corresponding path program 5 times [2020-09-25 14:45:55,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:55,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815311599] [2020-09-25 14:45:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 14:45:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:45:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-09-25 14:45:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:45:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:45:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:45:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:45:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:57,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:45:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:45:57,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:57,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:45:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:45:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:45:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:45:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:45:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:57,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:45:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:45:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:45:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-25 14:45:57,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:45:57,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:45:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:45:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:45:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:45:57,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:45:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:45:57,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815311599] [2020-09-25 14:45:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:45:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:45:57,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862663972] [2020-09-25 14:45:57,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:45:57,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:45:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:45:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:45:57,917 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 17 states. [2020-09-25 14:45:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:45:58,563 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-09-25 14:45:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:45:58,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-09-25 14:45:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:45:58,565 INFO L225 Difference]: With dead ends: 111 [2020-09-25 14:45:58,565 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 14:45:58,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 14:45:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 14:45:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-09-25 14:45:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 14:45:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 14:45:58,574 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 59 [2020-09-25 14:45:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:45:58,575 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 14:45:58,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:45:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 14:45:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:45:58,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:45:58,576 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:45:58,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:45:58,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:45:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:45:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash 195424449, now seen corresponding path program 6 times [2020-09-25 14:45:58,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:45:58,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83318806] [2020-09-25 14:45:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:45:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:45:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:45:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:46:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-09-25 14:46:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:00,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:46:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:46:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:00,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:00,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:00,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:46:00,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:00,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:00,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:01,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 14:46:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-25 14:46:01,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:01,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:46:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:46:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:01,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83318806] [2020-09-25 14:46:01,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:01,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:46:01,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600736668] [2020-09-25 14:46:01,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:46:01,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:01,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:46:01,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:46:01,359 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 19 states. [2020-09-25 14:46:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:02,456 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-25 14:46:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 14:46:02,456 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 14:46:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:02,459 INFO L225 Difference]: With dead ends: 117 [2020-09-25 14:46:02,459 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 14:46:02,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 14:46:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 14:46:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2020-09-25 14:46:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 14:46:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 14:46:02,486 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 65 [2020-09-25 14:46:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:02,487 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 14:46:02,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:46:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 14:46:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:46:02,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:02,489 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:46:02,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:46:02,489 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1530599747, now seen corresponding path program 7 times [2020-09-25 14:46:02,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:02,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766503629] [2020-09-25 14:46:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:04,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:04,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:46:04,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-09-25 14:46:04,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:04,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:46:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 14:46:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:46:04,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:04,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:05,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:05,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:05,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:46:05,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 14:46:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:46:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:46:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:06,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766503629] [2020-09-25 14:46:06,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:06,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:46:06,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853486272] [2020-09-25 14:46:06,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:46:06,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:06,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:46:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:46:06,062 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 21 states. [2020-09-25 14:46:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:07,014 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2020-09-25 14:46:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:46:07,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 71 [2020-09-25 14:46:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:07,016 INFO L225 Difference]: With dead ends: 123 [2020-09-25 14:46:07,016 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 14:46:07,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1632, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 14:46:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 14:46:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-09-25 14:46:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 14:46:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-09-25 14:46:07,027 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 71 [2020-09-25 14:46:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:07,028 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-09-25 14:46:07,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:46:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-09-25 14:46:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 14:46:07,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:07,030 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:46:07,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:46:07,031 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:07,031 INFO L82 PathProgramCache]: Analyzing trace with hash -658870343, now seen corresponding path program 8 times [2020-09-25 14:46:07,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:07,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610348229] [2020-09-25 14:46:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:46:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-09-25 14:46:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:09,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:46:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:46:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:09,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:09,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:46:09,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:09,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:09,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:46:10,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-09-25 14:46:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:10,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:46:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:46:10,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:10,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610348229] [2020-09-25 14:46:10,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:10,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 14:46:10,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555423790] [2020-09-25 14:46:10,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 14:46:10,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:10,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 14:46:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:46:10,863 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 23 states. [2020-09-25 14:46:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:12,139 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-09-25 14:46:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 14:46:12,143 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 77 [2020-09-25 14:46:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:12,144 INFO L225 Difference]: With dead ends: 129 [2020-09-25 14:46:12,145 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 14:46:12,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=1996, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 14:46:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 14:46:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-09-25 14:46:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 14:46:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-09-25 14:46:12,152 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 77 [2020-09-25 14:46:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:12,153 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-09-25 14:46:12,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 14:46:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-09-25 14:46:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 14:46:12,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:12,154 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:46:12,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:46:12,154 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -485733451, now seen corresponding path program 9 times [2020-09-25 14:46:12,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:12,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013168589] [2020-09-25 14:46:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:15,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:15,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:46:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2918 [2020-09-25 14:46:15,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:15,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:46:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 14:46:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:46:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:15,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:16,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:16,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:46:16,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:16,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-09-25 14:46:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:16,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:46:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:46:16,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:46:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:16,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013168589] [2020-09-25 14:46:16,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:16,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 14:46:16,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316797179] [2020-09-25 14:46:16,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 14:46:16,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:16,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 14:46:16,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:46:16,555 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 25 states. [2020-09-25 14:46:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:17,995 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-09-25 14:46:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 14:46:17,996 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 83 [2020-09-25 14:46:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:17,997 INFO L225 Difference]: With dead ends: 135 [2020-09-25 14:46:17,998 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 14:46:18,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=796, Invalid=2396, Unknown=0, NotChecked=0, Total=3192 [2020-09-25 14:46:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 14:46:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-09-25 14:46:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 14:46:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-09-25 14:46:18,010 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 83 [2020-09-25 14:46:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:18,011 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-09-25 14:46:18,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 14:46:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-09-25 14:46:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:46:18,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:18,012 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:46:18,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:46:18,012 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 871381681, now seen corresponding path program 10 times [2020-09-25 14:46:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:18,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719691154] [2020-09-25 14:46:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:21,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:21,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:46:21,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3169 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:46:21,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:21,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:21,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:21,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:46:21,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:21,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:46:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:22,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:46:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-25 14:46:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:22,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:46:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:46:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:22,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719691154] [2020-09-25 14:46:22,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:22,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 14:46:22,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333411648] [2020-09-25 14:46:22,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 14:46:22,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:22,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 14:46:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:46:22,720 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 27 states. [2020-09-25 14:46:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:24,188 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2020-09-25 14:46:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 14:46:24,189 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 89 [2020-09-25 14:46:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:24,190 INFO L225 Difference]: With dead ends: 141 [2020-09-25 14:46:24,190 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 14:46:24,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=936, Invalid=2724, Unknown=0, NotChecked=0, Total=3660 [2020-09-25 14:46:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 14:46:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2020-09-25 14:46:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 14:46:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-09-25 14:46:24,198 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 89 [2020-09-25 14:46:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:24,199 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-09-25 14:46:24,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 14:46:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-09-25 14:46:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-25 14:46:24,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:24,200 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 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 14:46:24,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:46:24,201 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash 743177389, now seen corresponding path program 11 times [2020-09-25 14:46:24,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:24,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460962008] [2020-09-25 14:46:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:27,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:46:27,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:46:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3202 [2020-09-25 14:46:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:27,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:46:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:46:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:46:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:27,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:27,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:27,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:46:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:28,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:28,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:46:28,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:46:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:46:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:29,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460962008] [2020-09-25 14:46:29,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:46:29,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 14:46:29,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026349079] [2020-09-25 14:46:29,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 14:46:29,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:29,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 14:46:29,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-09-25 14:46:29,272 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 29 states. [2020-09-25 14:46:31,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:31,061 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2020-09-25 14:46:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 14:46:31,062 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 95 [2020-09-25 14:46:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:31,064 INFO L225 Difference]: With dead ends: 147 [2020-09-25 14:46:31,064 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 14:46:31,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1103, Invalid=3187, Unknown=0, NotChecked=0, Total=4290 [2020-09-25 14:46:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 14:46:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-09-25 14:46:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 14:46:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-09-25 14:46:31,074 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 95 [2020-09-25 14:46:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:31,074 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-09-25 14:46:31,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 14:46:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-09-25 14:46:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:46:31,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:31,075 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 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 14:46:31,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:46:31,076 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash -642428503, now seen corresponding path program 12 times [2020-09-25 14:46:31,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:31,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211837695] [2020-09-25 14:46:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking...