/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:36:11,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:36:11,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:36:11,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:36:11,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:36:11,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:36:11,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:36:11,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:36:11,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:36:11,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:36:11,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:36:11,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:36:11,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:36:11,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:36:11,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:36:11,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:36:11,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:36:11,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:36:11,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:36:11,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:36:11,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:36:11,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:36:11,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:36:11,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:36:11,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:36:11,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:36:11,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:36:11,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:36:11,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:36:11,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:36:11,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:36:11,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:36:11,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:36:11,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:36:11,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:36:11,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:36:11,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:36:11,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:36:11,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:36:11,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:36:11,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:36:11,635 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 06:36:11,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:36:11,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:36:11,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:36:11,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:36:11,684 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:36:11,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:36:11,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:36:11,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:36:11,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:36:11,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:36:11,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:36:11,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:36:11,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:36:11,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:36:11,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:36:11,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:36:11,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:36:11,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:36:11,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:36:11,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:36:11,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:36:11,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:11,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:36:11,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:36:11,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:36:11,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:36:11,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:36:11,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:36:11,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:36:11,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:36:12,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:36:12,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:36:12,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:36:12,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:36:12,242 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:36:12,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 06:36:12,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c01ab70/1853718fc15d4f84ad560ce11f2e2b95/FLAG9e335eb4d [2020-09-25 06:36:12,879 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:36:12,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 06:36:12,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c01ab70/1853718fc15d4f84ad560ce11f2e2b95/FLAG9e335eb4d [2020-09-25 06:36:13,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c01ab70/1853718fc15d4f84ad560ce11f2e2b95 [2020-09-25 06:36:13,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:36:13,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:36:13,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:13,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:36:13,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:36:13,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13, skipping insertion in model container [2020-09-25 06:36:13,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:36:13,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:36:13,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:13,538 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:36:13,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:13,578 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:36:13,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13 WrapperNode [2020-09-25 06:36:13,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:13,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:36:13,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:36:13,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:36:13,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (1/1) ... [2020-09-25 06:36:13,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:36:13,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:36:13,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:36:13,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:36:13,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (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 06:36:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:36:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:36:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:36:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:36:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:36:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:36:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:36:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:36:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:36:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:36:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:36:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:36:14,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:36:14,023 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:36:14,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:14 BoogieIcfgContainer [2020-09-25 06:36:14,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:36:14,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:36:14,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:36:14,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:36:14,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:36:13" (1/3) ... [2020-09-25 06:36:14,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:14, skipping insertion in model container [2020-09-25 06:36:14,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:13" (2/3) ... [2020-09-25 06:36:14,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:14, skipping insertion in model container [2020-09-25 06:36:14,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:14" (3/3) ... [2020-09-25 06:36:14,039 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-25 06:36:14,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:36:14,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:36:14,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:36:14,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:36:14,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:36:14,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:36:14,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:36:14,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:36:14,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:36:14,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:36:14,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:36:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:36:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:36:14,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:14,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:14,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:14,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:36:14,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:14,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228666241] [2020-09-25 06:36:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:14,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:36:14,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:36:14,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:14,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:36:14,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:14,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:14,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:14,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:14,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:14,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:14,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:36:14,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:14,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:14,550 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 06:36:14,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228666241] [2020-09-25 06:36:14,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:14,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:14,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645428330] [2020-09-25 06:36:14,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:14,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:14,579 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:36:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:14,716 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:36:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:14,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:36:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:14,744 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:14,745 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:36:14,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 06:36:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:36:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:36:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:14,813 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:36:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:14,813 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:14,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:36:14,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:14,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:14,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:36:14,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:14,817 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:36:14,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:14,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578334737] [2020-09-25 06:36:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:14,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:36:14,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 06:36:14,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:14,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:14,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:14,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:14,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:14,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:15,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:36:15,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,029 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 06:36:15,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578334737] [2020-09-25 06:36:15,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:15,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:15,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460882068] [2020-09-25 06:36:15,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:15,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:15,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:15,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:15,034 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:36:15,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:15,109 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:36:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:15,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:36:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:15,112 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:36:15,112 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:36:15,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 06:36:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:36:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:36:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:15,124 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:36:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:15,125 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:15,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:36:15,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:15,127 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] [2020-09-25 06:36:15,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:36:15,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:36:15,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026448226] [2020-09-25 06:36:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:36:15,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-25 06:36:15,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:36:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:15,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:15,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:15,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:16,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:16,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 06:36:16,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:36:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:36:16,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026448226] [2020-09-25 06:36:16,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:16,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:36:16,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156643364] [2020-09-25 06:36:16,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:16,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:16,122 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 06:36:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:16,284 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 06:36:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:16,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 06:36:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:16,288 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:16,288 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 06:36:16,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 06:36:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 06:36:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:36:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:36:16,301 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:36:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:16,302 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:36:16,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:36:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:36:16,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:16,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:16,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:36:16,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:16,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:16,306 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:36:16,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:16,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694242370] [2020-09-25 06:36:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:36:16,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:16,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-09-25 06:36:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:17,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:17,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 06:36:17,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:17,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:36:17,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:17,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:36:17,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:17,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:36:17,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694242370] [2020-09-25 06:36:17,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:17,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:17,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858125740] [2020-09-25 06:36:17,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:17,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:17,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:17,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:17,526 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 06:36:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:17,657 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 06:36:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:17,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 06:36:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:17,660 INFO L225 Difference]: With dead ends: 110 [2020-09-25 06:36:17,660 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:36:17,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:36:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:36:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 06:36:17,679 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 06:36:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:17,680 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 06:36:17,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 06:36:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:17,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:17,684 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:17,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:36:17,684 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:17,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 06:36:17,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:17,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548597024] [2020-09-25 06:36:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:22,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:36:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:22,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:26,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:26,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4150 [2020-09-25 06:36:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:26,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 06:36:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:27,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:27,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:27,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:27,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:27,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:36:27,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548597024] [2020-09-25 06:36:27,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:27,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:27,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019121770] [2020-09-25 06:36:27,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:27,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:27,239 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 06:36:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:27,462 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2020-09-25 06:36:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:36:27,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 06:36:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:27,465 INFO L225 Difference]: With dead ends: 78 [2020-09-25 06:36:27,465 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 06:36:27,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:36:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 06:36:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 06:36:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 06:36:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 06:36:27,495 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 51 [2020-09-25 06:36:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:27,497 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 06:36:27,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 06:36:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 06:36:27,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:27,503 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:27,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:36:27,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 06:36:27,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:27,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800040937] [2020-09-25 06:36:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 06:36:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:36:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:36:32,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 06:36:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:32,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:32,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:36:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:36:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:37,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:36:37,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:37,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:37,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:37,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:37,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:37,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:36:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 06:36:38,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:38,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:38,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:38,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:38,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 06:36:38,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800040937] [2020-09-25 06:36:38,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:38,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:38,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013200505] [2020-09-25 06:36:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:38,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:38,512 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 10 states. [2020-09-25 06:36:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:38,758 INFO L93 Difference]: Finished difference Result 144 states and 225 transitions. [2020-09-25 06:36:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:36:38,759 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 06:36:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:38,764 INFO L225 Difference]: With dead ends: 144 [2020-09-25 06:36:38,764 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 06:36:38,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:36:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 06:36:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-25 06:36:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 06:36:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2020-09-25 06:36:38,796 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 71 [2020-09-25 06:36:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:38,796 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2020-09-25 06:36:38,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2020-09-25 06:36:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 06:36:38,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:38,800 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:38,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:36:38,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 06:36:38,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:38,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758096127] [2020-09-25 06:36:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 06:36:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 06:36:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:36:43,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 06:36:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:43,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:43,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 06:36:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:36:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:36:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:36:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:36:49,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:49,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:49,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:50,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:36:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 06:36:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:36:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:36:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:52,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:36:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:36:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:52,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:52,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:52,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 32 proven. 76 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-25 06:36:52,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758096127] [2020-09-25 06:36:52,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:52,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:52,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851773640] [2020-09-25 06:36:52,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:52,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:52,194 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand 9 states. [2020-09-25 06:36:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:52,469 INFO L93 Difference]: Finished difference Result 202 states and 314 transitions. [2020-09-25 06:36:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:52,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-09-25 06:36:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:52,472 INFO L225 Difference]: With dead ends: 202 [2020-09-25 06:36:52,472 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 06:36:52,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:36:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 06:36:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2020-09-25 06:36:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 06:36:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2020-09-25 06:36:52,505 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 122 [2020-09-25 06:36:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:52,506 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2020-09-25 06:36:52,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2020-09-25 06:36:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 06:36:52,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:52,508 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:52,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:36:52,508 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-25 06:36:52,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:52,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329206534] [2020-09-25 06:36:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:36:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 06:37:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 06:37:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:37:02,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:02,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:37:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:02,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:37:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:37:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:04,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:04,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:04,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 06:37:04,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329206534] [2020-09-25 06:37:04,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:04,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:04,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836573218] [2020-09-25 06:37:04,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:04,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:04,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:04,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:04,586 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand 9 states. [2020-09-25 06:37:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:04,807 INFO L93 Difference]: Finished difference Result 152 states and 221 transitions. [2020-09-25 06:37:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:37:04,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-09-25 06:37:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:04,810 INFO L225 Difference]: With dead ends: 152 [2020-09-25 06:37:04,810 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 06:37:04,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 06:37:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2020-09-25 06:37:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 06:37:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 190 transitions. [2020-09-25 06:37:04,828 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 190 transitions. Word has length 105 [2020-09-25 06:37:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:04,829 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 190 transitions. [2020-09-25 06:37:04,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 190 transitions. [2020-09-25 06:37:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 06:37:04,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:04,832 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:04,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:37:04,832 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash 309714606, now seen corresponding path program 2 times [2020-09-25 06:37:04,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:04,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362718289] [2020-09-25 06:37:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking...