/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:39:45,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:45,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:45,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:45,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:45,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:45,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:45,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:45,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:45,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:45,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:45,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:45,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:45,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:45,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:45,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:45,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:45,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:45,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:45,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:45,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:45,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:45,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:45,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:45,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:45,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:45,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:45,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:45,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:45,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:45,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:45,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:45,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:45,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:45,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:45,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:45,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:45,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:45,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:45,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:45,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:45,248 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 13:39:45,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:45,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:45,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:45,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:45,279 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:45,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:45,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:45,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:45,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:45,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:45,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:45,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:45,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:45,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:45,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:45,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:45,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:45,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:45,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:45,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:45,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:45,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:45,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:45,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:45,283 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:39:45,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:45,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:45,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:45,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:45,803 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:45,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 13:39:45,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/900d0702f/34a0dce3cfcc4a9f9695fb8e61a26405/FLAG72526da93 [2020-09-25 13:39:46,487 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:46,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 13:39:46,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/900d0702f/34a0dce3cfcc4a9f9695fb8e61a26405/FLAG72526da93 [2020-09-25 13:39:46,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/900d0702f/34a0dce3cfcc4a9f9695fb8e61a26405 [2020-09-25 13:39:46,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:46,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:46,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:46,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:46,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:46,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1d3574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46, skipping insertion in model container [2020-09-25 13:39:46,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:46,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:47,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:47,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:47,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:47,149 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:47,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47 WrapperNode [2020-09-25 13:39:47,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:47,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:47,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:47,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:47,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (1/1) ... [2020-09-25 13:39:47,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:47,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:47,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:47,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:47,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (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 13:39:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:39:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:39:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:39:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:39:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:47,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:47,708 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 13:39:47,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:47 BoogieIcfgContainer [2020-09-25 13:39:47,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:47,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:47,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:47,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:47,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:46" (1/3) ... [2020-09-25 13:39:47,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aff4fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:47, skipping insertion in model container [2020-09-25 13:39:47,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:47" (2/3) ... [2020-09-25 13:39:47,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aff4fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:47, skipping insertion in model container [2020-09-25 13:39:47,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:47" (3/3) ... [2020-09-25 13:39:47,723 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-09-25 13:39:47,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:47,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:47,766 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:47,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:47,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:47,797 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:47,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:47,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:47,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:47,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:47,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-25 13:39:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 13:39:47,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:47,830 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] [2020-09-25 13:39:47,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-09-25 13:39:47,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:47,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564167942] [2020-09-25 13:39:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:39:48,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:48,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 13:39:48,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:39:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:39:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:48,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,195 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 13:39:48,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564167942] [2020-09-25 13:39:48,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:48,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:48,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389018418] [2020-09-25 13:39:48,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:48,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:48,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:48,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:48,228 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 5 states. [2020-09-25 13:39:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:48,339 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2020-09-25 13:39:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:39:48,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 13:39:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:48,354 INFO L225 Difference]: With dead ends: 83 [2020-09-25 13:39:48,354 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 13:39:48,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 13:39:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-25 13:39:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 13:39:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-25 13:39:48,422 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 24 [2020-09-25 13:39:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:48,423 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-25 13:39:48,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-25 13:39:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:39:48,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:48,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:48,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:48,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:48,428 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-09-25 13:39:48,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:48,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170848680] [2020-09-25 13:39:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:39:48,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 13:39:48,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:39:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:39:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:48,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:39:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:39:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:48,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170848680] [2020-09-25 13:39:48,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:48,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:39:48,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492777983] [2020-09-25 13:39:48,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:39:48,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:39:48,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:48,972 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-09-25 13:39:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:49,136 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-09-25 13:39:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:39:49,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 13:39:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:49,144 INFO L225 Difference]: With dead ends: 82 [2020-09-25 13:39:49,145 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 13:39:49,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 13:39:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-09-25 13:39:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:39:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-09-25 13:39:49,189 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-09-25 13:39:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:49,191 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-09-25 13:39:49,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:39:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-09-25 13:39:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 13:39:49,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:49,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:49,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:49,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-09-25 13:39:49,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:49,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083601348] [2020-09-25 13:39:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:39:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 13:39:49,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:39:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:39:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:39:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:49,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:39:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:39:49,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:49,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083601348] [2020-09-25 13:39:49,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:49,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:39:49,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498535037] [2020-09-25 13:39:49,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:49,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:49,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:49,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:49,985 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 7 states. [2020-09-25 13:39:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:50,217 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2020-09-25 13:39:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:39:50,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-25 13:39:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:50,223 INFO L225 Difference]: With dead ends: 96 [2020-09-25 13:39:50,223 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 13:39:50,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:39:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 13:39:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-09-25 13:39:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 13:39:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-09-25 13:39:50,245 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 44 [2020-09-25 13:39:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:50,246 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-09-25 13:39:50,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-09-25 13:39:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 13:39:50,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:50,250 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:50,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:39:50,250 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -777003023, now seen corresponding path program 2 times [2020-09-25 13:39:50,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:50,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126418492] [2020-09-25 13:39:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:39:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 13:39:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:39:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:39:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:39:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:39:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:50,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:39:50,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 13:39:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:39:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:39:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:50,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126418492] [2020-09-25 13:39:50,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:50,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:39:50,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044800126] [2020-09-25 13:39:50,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:50,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:50,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:50,590 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2020-09-25 13:39:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:50,689 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-25 13:39:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:39:50,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 13:39:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:50,693 INFO L225 Difference]: With dead ends: 79 [2020-09-25 13:39:50,693 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 13:39:50,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 13:39:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2020-09-25 13:39:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 13:39:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-25 13:39:50,723 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 50 [2020-09-25 13:39:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:50,730 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-25 13:39:50,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-25 13:39:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 13:39:50,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:50,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:39:50,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:39:50,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:50,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:50,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1318170893, now seen corresponding path program 3 times [2020-09-25 13:39:50,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:50,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871065054] [2020-09-25 13:39:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:39:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-25 13:39:51,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:39:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:39:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:51,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 13:39:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:39:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 13:39:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:39:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 13:39:51,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871065054] [2020-09-25 13:39:51,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:51,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:39:51,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94539283] [2020-09-25 13:39:51,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:51,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:51,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:51,486 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 9 states. [2020-09-25 13:39:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:51,726 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-09-25 13:39:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:39:51,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 13:39:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:51,730 INFO L225 Difference]: With dead ends: 138 [2020-09-25 13:39:51,730 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 13:39:51,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:39:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 13:39:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 78. [2020-09-25 13:39:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 13:39:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-25 13:39:51,743 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 70 [2020-09-25 13:39:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:51,744 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-25 13:39:51,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-25 13:39:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:39:51,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:51,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:39:51,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:39:51,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:51,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1633055509, now seen corresponding path program 4 times [2020-09-25 13:39:51,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:51,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969507657] [2020-09-25 13:39:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 13:39:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-09-25 13:39:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:39:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:39:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:39:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:53,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:39:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:39:53,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:39:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:53,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:39:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:53,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:39:53,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969507657] [2020-09-25 13:39:53,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:53,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:39:53,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956142869] [2020-09-25 13:39:53,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:39:53,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:39:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:39:53,965 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 11 states. [2020-09-25 13:39:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:54,261 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2020-09-25 13:39:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:39:54,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 13:39:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:54,264 INFO L225 Difference]: With dead ends: 152 [2020-09-25 13:39:54,264 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:39:54,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:39:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:39:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 84. [2020-09-25 13:39:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:39:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 13:39:54,275 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 76 [2020-09-25 13:39:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:54,276 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 13:39:54,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:39:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 13:39:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 13:39:54,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:54,277 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-09-25 13:39:54,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:39:54,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:54,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1899204381, now seen corresponding path program 5 times [2020-09-25 13:39:54,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:54,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433109783] [2020-09-25 13:39:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 13:39:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-25 13:39:54,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:39:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:39:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:39:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:54,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:39:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:39:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 13:39:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:39:54,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433109783] [2020-09-25 13:39:54,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:54,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:39:54,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228755976] [2020-09-25 13:39:54,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:54,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:54,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:54,852 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 9 states. [2020-09-25 13:39:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:54,933 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-09-25 13:39:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:54,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 13:39:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:54,935 INFO L225 Difference]: With dead ends: 107 [2020-09-25 13:39:54,935 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 13:39:54,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:39:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 13:39:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2020-09-25 13:39:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 13:39:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2020-09-25 13:39:54,945 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 82 [2020-09-25 13:39:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:54,946 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2020-09-25 13:39:54,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2020-09-25 13:39:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 13:39:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:54,948 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 13:39:54,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:39:54,949 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash -927854023, now seen corresponding path program 6 times [2020-09-25 13:39:54,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:54,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685501259] [2020-09-25 13:39:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 13:39:56,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-09-25 13:39:56,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:39:56,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:39:56,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:39:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:39:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:56,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:39:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 13:39:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:56,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 13:39:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:56,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:39:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:39:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:39:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 78 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 13:39:56,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685501259] [2020-09-25 13:39:56,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:56,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:39:56,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484960730] [2020-09-25 13:39:56,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:39:56,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:39:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:39:56,369 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 13 states. [2020-09-25 13:39:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:56,790 INFO L93 Difference]: Finished difference Result 194 states and 214 transitions. [2020-09-25 13:39:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:39:56,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-09-25 13:39:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:56,793 INFO L225 Difference]: With dead ends: 194 [2020-09-25 13:39:56,793 INFO L226 Difference]: Without dead ends: 149 [2020-09-25 13:39:56,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:39:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-25 13:39:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 106. [2020-09-25 13:39:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 13:39:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 13:39:56,814 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 102 [2020-09-25 13:39:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:56,815 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 13:39:56,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:39:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 13:39:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 13:39:56,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:56,817 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 13:39:56,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:39:56,817 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:56,818 INFO L82 PathProgramCache]: Analyzing trace with hash 917288001, now seen corresponding path program 7 times [2020-09-25 13:39:56,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:56,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448624470] [2020-09-25 13:39:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 13:40:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-09-25 13:40:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:40:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 13:40:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:01,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:40:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:01,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 13:40:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:01,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:01,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:01,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:40:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:40:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 13:40:01,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448624470] [2020-09-25 13:40:01,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:01,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:40:01,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344372981] [2020-09-25 13:40:01,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:40:01,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:40:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:01,380 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 10 states. [2020-09-25 13:40:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:01,457 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-09-25 13:40:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:40:01,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-09-25 13:40:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:01,459 INFO L225 Difference]: With dead ends: 123 [2020-09-25 13:40:01,459 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 13:40:01,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 13:40:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2020-09-25 13:40:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 13:40:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2020-09-25 13:40:01,468 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 108 [2020-09-25 13:40:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:01,468 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2020-09-25 13:40:01,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:40:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2020-09-25 13:40:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 13:40:01,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:01,470 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 13:40:01,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:40:01,471 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:01,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1617732209, now seen corresponding path program 8 times [2020-09-25 13:40:01,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:01,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083315546] [2020-09-25 13:40:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:40:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 13:40:02,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:40:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:40:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:40:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 13:40:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:02,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:40:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:40:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:40:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:40:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-25 13:40:02,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083315546] [2020-09-25 13:40:02,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:02,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:40:02,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343537381] [2020-09-25 13:40:02,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:40:02,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:02,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:40:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:40:02,537 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand 15 states. [2020-09-25 13:40:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:02,951 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2020-09-25 13:40:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:40:02,952 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 118 [2020-09-25 13:40:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:02,953 INFO L225 Difference]: With dead ends: 224 [2020-09-25 13:40:02,953 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 13:40:02,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=465, Unknown=0, NotChecked=0, Total=702 [2020-09-25 13:40:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 13:40:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 122. [2020-09-25 13:40:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:40:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2020-09-25 13:40:02,967 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 118 [2020-09-25 13:40:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:02,969 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2020-09-25 13:40:02,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:40:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2020-09-25 13:40:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 13:40:02,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:02,974 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 13:40:02,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:40:02,974 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash -581374057, now seen corresponding path program 9 times [2020-09-25 13:40:02,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:02,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781964911] [2020-09-25 13:40:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:40:08,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:40:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:40:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:40:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:40:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:08,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:40:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 13:40:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:40:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:08,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:40:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:08,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781964911] [2020-09-25 13:40:08,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:08,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:08,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740211206] [2020-09-25 13:40:08,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:08,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:08,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:08,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:08,244 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand 11 states. [2020-09-25 13:40:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:08,335 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-09-25 13:40:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:40:08,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-09-25 13:40:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:08,337 INFO L225 Difference]: With dead ends: 139 [2020-09-25 13:40:08,337 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 13:40:08,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 13:40:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 132. [2020-09-25 13:40:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 13:40:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 137 transitions. [2020-09-25 13:40:08,346 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 137 transitions. Word has length 124 [2020-09-25 13:40:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:08,346 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 137 transitions. [2020-09-25 13:40:08,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 137 transitions. [2020-09-25 13:40:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 13:40:08,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:08,348 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2020-09-25 13:40:08,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:40:08,349 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:08,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1723472539, now seen corresponding path program 10 times [2020-09-25 13:40:08,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:08,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511531619] [2020-09-25 13:40:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 13:40:10,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:10,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-09-25 13:40:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:40:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:40:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:10,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:40:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:40:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:40:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 13:40:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:40:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:40:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 13:40:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:10,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:40:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:10,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 152 proven. 102 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 13:40:10,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511531619] [2020-09-25 13:40:10,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:10,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:40:10,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976293766] [2020-09-25 13:40:10,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:40:10,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:40:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:40:10,634 INFO L87 Difference]: Start difference. First operand 132 states and 137 transitions. Second operand 17 states. [2020-09-25 13:40:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:11,288 INFO L93 Difference]: Finished difference Result 254 states and 280 transitions. [2020-09-25 13:40:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:40:11,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2020-09-25 13:40:11,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:11,292 INFO L225 Difference]: With dead ends: 254 [2020-09-25 13:40:11,292 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 13:40:11,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:40:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 13:40:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 138. [2020-09-25 13:40:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-25 13:40:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 143 transitions. [2020-09-25 13:40:11,312 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 143 transitions. Word has length 134 [2020-09-25 13:40:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:11,313 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 143 transitions. [2020-09-25 13:40:11,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:40:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 143 transitions. [2020-09-25 13:40:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 13:40:11,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:11,316 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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] [2020-09-25 13:40:11,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:40:11,316 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 318138221, now seen corresponding path program 11 times [2020-09-25 13:40:11,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:11,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979666862] [2020-09-25 13:40:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:40:16,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:40:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:40:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:16,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 13:40:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:16,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:40:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 13:40:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 13:40:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:16,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 13:40:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 13:40:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:16,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 154 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 13:40:16,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979666862] [2020-09-25 13:40:16,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:16,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:40:16,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319631714] [2020-09-25 13:40:16,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:40:16,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:16,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:40:16,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:16,602 INFO L87 Difference]: Start difference. First operand 138 states and 143 transitions. Second operand 12 states. [2020-09-25 13:40:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:16,699 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-09-25 13:40:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:16,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-25 13:40:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:16,701 INFO L225 Difference]: With dead ends: 155 [2020-09-25 13:40:16,701 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 13:40:16,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:40:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 13:40:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2020-09-25 13:40:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 13:40:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 153 transitions. [2020-09-25 13:40:16,717 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 153 transitions. Word has length 140 [2020-09-25 13:40:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:16,717 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 153 transitions. [2020-09-25 13:40:16,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:40:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 153 transitions. [2020-09-25 13:40:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:40:16,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:16,719 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2020-09-25 13:40:16,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:40:16,720 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:16,720 INFO L82 PathProgramCache]: Analyzing trace with hash -186119749, now seen corresponding path program 12 times [2020-09-25 13:40:16,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:16,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587391226] [2020-09-25 13:40:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:40:18,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2212 [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 13:40:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:40:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 13:40:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:19,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:40:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 13:40:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 13:40:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:19,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 13:40:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 13:40:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:40:19,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 13:40:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:19,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:19,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:40:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 198 proven. 140 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-09-25 13:40:19,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587391226] [2020-09-25 13:40:19,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:19,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:40:19,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971377044] [2020-09-25 13:40:19,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:40:19,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:19,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:40:19,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:19,279 INFO L87 Difference]: Start difference. First operand 148 states and 153 transitions. Second operand 19 states. [2020-09-25 13:40:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:19,826 INFO L93 Difference]: Finished difference Result 284 states and 313 transitions. [2020-09-25 13:40:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 13:40:19,826 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-09-25 13:40:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:19,829 INFO L225 Difference]: With dead ends: 284 [2020-09-25 13:40:19,830 INFO L226 Difference]: Without dead ends: 221 [2020-09-25 13:40:19,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 13:40:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-25 13:40:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 154. [2020-09-25 13:40:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 13:40:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2020-09-25 13:40:19,844 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 150 [2020-09-25 13:40:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:19,844 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2020-09-25 13:40:19,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:40:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2020-09-25 13:40:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:40:19,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:19,846 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2020-09-25 13:40:19,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:40:19,847 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:19,847 INFO L82 PathProgramCache]: Analyzing trace with hash -693929021, now seen corresponding path program 13 times [2020-09-25 13:40:19,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:19,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434534120] [2020-09-25 13:40:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:40:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 13:40:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 13:40:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 13:40:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 13:40:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-25 13:40:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 13:40:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 13:40:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:25,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 13:40:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 13:40:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 200 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 13:40:25,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434534120] [2020-09-25 13:40:25,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:25,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:40:25,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451071372] [2020-09-25 13:40:25,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:40:25,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:40:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:40:25,331 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 21 states. [2020-09-25 13:40:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:26,099 INFO L93 Difference]: Finished difference Result 298 states and 330 transitions. [2020-09-25 13:40:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 13:40:26,100 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 156 [2020-09-25 13:40:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:26,105 INFO L225 Difference]: With dead ends: 298 [2020-09-25 13:40:26,105 INFO L226 Difference]: Without dead ends: 235 [2020-09-25 13:40:26,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=489, Invalid=993, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 13:40:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-25 13:40:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 160. [2020-09-25 13:40:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 13:40:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 165 transitions. [2020-09-25 13:40:26,119 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 165 transitions. Word has length 156 [2020-09-25 13:40:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:26,119 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 165 transitions. [2020-09-25 13:40:26,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 13:40:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 165 transitions. [2020-09-25 13:40:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:40:26,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:26,121 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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] [2020-09-25 13:40:26,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:40:26,122 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1840465867, now seen corresponding path program 14 times [2020-09-25 13:40:26,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:26,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029351287] [2020-09-25 13:40:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:40:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 13:40:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 13:40:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:40:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 13:40:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 13:40:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 13:40:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 13:40:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 13:40:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 13:40:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:27,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 250 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 13:40:27,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029351287] [2020-09-25 13:40:27,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:27,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:40:27,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464974137] [2020-09-25 13:40:27,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:40:27,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:27,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:40:27,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:40:27,426 INFO L87 Difference]: Start difference. First operand 160 states and 165 transitions. Second operand 14 states. [2020-09-25 13:40:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:27,584 INFO L93 Difference]: Finished difference Result 183 states and 189 transitions. [2020-09-25 13:40:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:27,585 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 162 [2020-09-25 13:40:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:27,588 INFO L225 Difference]: With dead ends: 183 [2020-09-25 13:40:27,588 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 13:40:27,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:40:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 13:40:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 176. [2020-09-25 13:40:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 13:40:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 182 transitions. [2020-09-25 13:40:27,596 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 182 transitions. Word has length 162 [2020-09-25 13:40:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:27,596 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 182 transitions. [2020-09-25 13:40:27,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:40:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 182 transitions. [2020-09-25 13:40:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 13:40:27,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:27,599 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2020-09-25 13:40:27,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:40:27,599 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 270313447, now seen corresponding path program 15 times [2020-09-25 13:40:27,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:27,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104372393] [2020-09-25 13:40:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:40:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 13:40:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:29,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 13:40:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:40:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 13:40:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:29,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 13:40:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 13:40:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:29,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 13:40:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 13:40:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 13:40:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 13:40:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 13:40:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:29,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 308 proven. 234 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-09-25 13:40:29,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104372393] [2020-09-25 13:40:29,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:29,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 13:40:29,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319079945] [2020-09-25 13:40:29,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 13:40:29,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 13:40:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:40:29,778 INFO L87 Difference]: Start difference. First operand 176 states and 182 transitions. Second operand 23 states. [2020-09-25 13:40:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:30,735 INFO L93 Difference]: Finished difference Result 340 states and 376 transitions. [2020-09-25 13:40:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 13:40:30,735 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 182 [2020-09-25 13:40:30,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:30,738 INFO L225 Difference]: With dead ends: 340 [2020-09-25 13:40:30,738 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 13:40:30,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=593, Invalid=1213, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 13:40:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 13:40:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 182. [2020-09-25 13:40:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-25 13:40:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 188 transitions. [2020-09-25 13:40:30,748 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 188 transitions. Word has length 182 [2020-09-25 13:40:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:30,748 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 188 transitions. [2020-09-25 13:40:30,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 13:40:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 188 transitions. [2020-09-25 13:40:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 13:40:30,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:30,751 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2020-09-25 13:40:30,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:40:30,751 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1179515375, now seen corresponding path program 16 times [2020-09-25 13:40:30,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:30,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930112833] [2020-09-25 13:40:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 13:40:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:40:35,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 13:40:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 13:40:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:40:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:40:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:35,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:35,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:40:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 13:40:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 13:40:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 13:40:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 13:40:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:36,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 13:40:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-25 13:40:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:36,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-25 13:40:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 310 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 13:40:36,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930112833] [2020-09-25 13:40:36,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:36,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:40:36,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868556990] [2020-09-25 13:40:36,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:40:36,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:40:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:40:36,095 INFO L87 Difference]: Start difference. First operand 182 states and 188 transitions. Second operand 15 states. [2020-09-25 13:40:36,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:36,250 INFO L93 Difference]: Finished difference Result 199 states and 205 transitions. [2020-09-25 13:40:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:40:36,251 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2020-09-25 13:40:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:36,254 INFO L225 Difference]: With dead ends: 199 [2020-09-25 13:40:36,254 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 13:40:36,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:40:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 13:40:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2020-09-25 13:40:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 13:40:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 198 transitions. [2020-09-25 13:40:36,265 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 198 transitions. Word has length 188 [2020-09-25 13:40:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:36,265 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 198 transitions. [2020-09-25 13:40:36,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:40:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 198 transitions. [2020-09-25 13:40:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 13:40:36,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:36,268 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2020-09-25 13:40:36,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:40:36,269 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 831775165, now seen corresponding path program 17 times [2020-09-25 13:40:36,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:36,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818384370] [2020-09-25 13:40:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-09-25 13:40:39,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 13:40:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 13:40:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:40:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:39,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:40:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:40:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 13:40:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 13:40:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 13:40:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 13:40:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 13:40:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-25 13:40:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:39,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-25 13:40:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-25 13:40:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 372 proven. 290 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 13:40:39,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818384370] [2020-09-25 13:40:39,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:39,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 13:40:39,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967369215] [2020-09-25 13:40:39,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 13:40:39,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 13:40:39,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:40:39,592 INFO L87 Difference]: Start difference. First operand 192 states and 198 transitions. Second operand 25 states.