/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:12,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:12,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:12,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:12,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:12,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:12,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:12,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:12,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:12,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:13,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:13,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:13,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:13,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:13,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:13,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:13,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:13,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:13,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:13,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:13,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:13,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:13,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:13,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:13,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:13,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:13,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:13,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:13,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:13,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:13,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:13,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:13,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:13,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:13,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:13,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:13,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:13,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:13,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:13,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:13,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:13,050 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 04:25:13,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:13,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:13,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:13,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:13,098 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:13,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:13,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:13,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:13,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:13,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:13,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:13,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:13,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:13,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:13,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:13,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:13,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:13,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:13,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:13,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:13,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:13,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:13,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:13,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:13,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:13,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:13,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:13,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:13,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:13,104 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:25:13,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:13,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:13,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:13,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:13,594 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:13,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 04:25:13,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b66992a76/679ab3e8dc82477baf4b5da6498660dc/FLAGa9c020a52 [2020-09-25 04:25:14,346 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:14,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 04:25:14,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b66992a76/679ab3e8dc82477baf4b5da6498660dc/FLAGa9c020a52 [2020-09-25 04:25:14,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b66992a76/679ab3e8dc82477baf4b5da6498660dc [2020-09-25 04:25:14,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:14,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:14,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:14,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:14,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:14,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:14" (1/1) ... [2020-09-25 04:25:14,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:14, skipping insertion in model container [2020-09-25 04:25:14,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:14" (1/1) ... [2020-09-25 04:25:14,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:14,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:15,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:15,169 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:15,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:15,479 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:15,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15 WrapperNode [2020-09-25 04:25:15,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:15,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:15,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:15,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:15,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (1/1) ... [2020-09-25 04:25:15,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:15,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:15,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:15,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:15,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (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 04:25:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:17,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:17,092 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:17 BoogieIcfgContainer [2020-09-25 04:25:17,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:17,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:17,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:17,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:17,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:14" (1/3) ... [2020-09-25 04:25:17,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:17, skipping insertion in model container [2020-09-25 04:25:17,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:15" (2/3) ... [2020-09-25 04:25:17,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:17, skipping insertion in model container [2020-09-25 04:25:17,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:17" (3/3) ... [2020-09-25 04:25:17,115 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 04:25:17,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:17,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:17,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:17,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:17,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:17,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:17,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:17,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:17,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:17,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:17,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 04:25:17,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:17,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:17,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 04:25:17,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:17,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 04:25:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 04:25:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 04:25:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:22,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:25:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:25:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:25:22,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:22,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:22,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:25:22,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:22,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:22,960 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 04:25:22,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 04:25:22,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:22,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:25:22,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273783044] [2020-09-25 04:25:22,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:22,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:22,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:22,995 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 04:25:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:25,869 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 04:25:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:25:25,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 04:25:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:25,898 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 04:25:25,898 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 04:25:25,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:25,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 04:25:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 04:25:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 04:25:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 04:25:26,031 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-25 04:25:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:26,032 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 04:25:26,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 04:25:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 04:25:26,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:26,044 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:26,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:26,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-25 04:25:26,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:26,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914113139] [2020-09-25 04:25:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:26,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:25:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:25:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-09-25 04:25:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:25:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:25:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:27,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:25:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:27,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:27,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:25:27,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:25:27,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:27,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914113139] [2020-09-25 04:25:27,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:27,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:27,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654389482] [2020-09-25 04:25:27,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:27,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:27,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:27,914 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-25 04:25:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:29,979 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-25 04:25:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:29,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 04:25:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:29,988 INFO L225 Difference]: With dead ends: 1928 [2020-09-25 04:25:29,988 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 04:25:29,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 04:25:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-25 04:25:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 04:25:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-25 04:25:30,058 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-25 04:25:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:30,059 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-25 04:25:30,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-25 04:25:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:25:30,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:30,068 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:30,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:30,069 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-25 04:25:30,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:30,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867106211] [2020-09-25 04:25:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:25:34,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4814 [2020-09-25 04:25:34,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:34,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:25:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:35,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:25:35,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:25:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:25:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:25:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:25:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:25:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:35,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867106211] [2020-09-25 04:25:35,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:35,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:25:35,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016842881] [2020-09-25 04:25:35,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:25:35,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:35,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:25:35,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:25:35,254 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-25 04:25:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:38,023 INFO L93 Difference]: Finished difference Result 3198 states and 4083 transitions. [2020-09-25 04:25:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:25:38,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 04:25:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:38,041 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 04:25:38,042 INFO L226 Difference]: Without dead ends: 1974 [2020-09-25 04:25:38,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:25:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-09-25 04:25:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1755. [2020-09-25 04:25:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-25 04:25:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2060 transitions. [2020-09-25 04:25:38,145 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2060 transitions. Word has length 133 [2020-09-25 04:25:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:38,147 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2060 transitions. [2020-09-25 04:25:38,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:25:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2060 transitions. [2020-09-25 04:25:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:25:38,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:38,153 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:38,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:38,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:38,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1160097473, now seen corresponding path program 1 times [2020-09-25 04:25:38,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:38,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635806410] [2020-09-25 04:25:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:25:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:25:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:25:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:43,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:25:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:25:43,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:43,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:43,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:25:43,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:25:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:25:43,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635806410] [2020-09-25 04:25:43,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:43,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:43,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216444483] [2020-09-25 04:25:43,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:43,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:43,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:43,528 INFO L87 Difference]: Start difference. First operand 1755 states and 2060 transitions. Second operand 7 states. [2020-09-25 04:25:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:45,414 INFO L93 Difference]: Finished difference Result 4404 states and 5367 transitions. [2020-09-25 04:25:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:45,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-25 04:25:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:45,437 INFO L225 Difference]: With dead ends: 4404 [2020-09-25 04:25:45,438 INFO L226 Difference]: Without dead ends: 2673 [2020-09-25 04:25:45,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:25:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2020-09-25 04:25:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2431. [2020-09-25 04:25:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-09-25 04:25:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 2883 transitions. [2020-09-25 04:25:45,582 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 2883 transitions. Word has length 154 [2020-09-25 04:25:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 2431 states and 2883 transitions. [2020-09-25 04:25:45,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 2883 transitions. [2020-09-25 04:25:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 04:25:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:45,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:45,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:45,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-25 04:25:45,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:45,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781337449] [2020-09-25 04:25:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:50,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 04:25:50,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:25:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:50,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:25:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:25:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:25:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:25:50,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:50,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:50,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:50,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:50,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:50,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:50,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:25:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 04:25:50,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:25:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 04:25:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:25:51,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 04:25:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:25:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:51,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781337449] [2020-09-25 04:25:51,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:51,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:25:51,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703590832] [2020-09-25 04:25:51,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:25:51,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:51,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:25:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:25:51,165 INFO L87 Difference]: Start difference. First operand 2431 states and 2883 transitions. Second operand 8 states. [2020-09-25 04:25:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:54,435 INFO L93 Difference]: Finished difference Result 5474 states and 6524 transitions. [2020-09-25 04:25:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:25:54,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 04:25:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:54,452 INFO L225 Difference]: With dead ends: 5474 [2020-09-25 04:25:54,452 INFO L226 Difference]: Without dead ends: 3067 [2020-09-25 04:25:54,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:25:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2020-09-25 04:25:54,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2588. [2020-09-25 04:25:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-09-25 04:25:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3068 transitions. [2020-09-25 04:25:54,544 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3068 transitions. Word has length 162 [2020-09-25 04:25:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:54,544 INFO L479 AbstractCegarLoop]: Abstraction has 2588 states and 3068 transitions. [2020-09-25 04:25:54,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:25:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3068 transitions. [2020-09-25 04:25:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:25:54,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:54,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:54,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:54,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:54,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1346264804, now seen corresponding path program 1 times [2020-09-25 04:25:54,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:54,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978857326] [2020-09-25 04:25:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:25:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:25:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-09-25 04:25:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:25:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:55,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:55,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:55,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:55,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:55,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:25:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:25:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:25:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:55,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:25:55,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 04:25:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:56,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:25:56,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:56,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:56,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:56,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 04:25:56,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978857326] [2020-09-25 04:25:56,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:56,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:56,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835333092] [2020-09-25 04:25:56,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:56,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:56,038 INFO L87 Difference]: Start difference. First operand 2588 states and 3068 transitions. Second operand 7 states. [2020-09-25 04:25:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:58,193 INFO L93 Difference]: Finished difference Result 6137 states and 7340 transitions. [2020-09-25 04:25:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:58,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 04:25:58,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:58,211 INFO L225 Difference]: With dead ends: 6137 [2020-09-25 04:25:58,211 INFO L226 Difference]: Without dead ends: 3573 [2020-09-25 04:25:58,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-09-25 04:25:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3017. [2020-09-25 04:25:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-09-25 04:25:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 3610 transitions. [2020-09-25 04:25:58,301 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 3610 transitions. Word has length 171 [2020-09-25 04:25:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:58,302 INFO L479 AbstractCegarLoop]: Abstraction has 3017 states and 3610 transitions. [2020-09-25 04:25:58,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 3610 transitions. [2020-09-25 04:25:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:25:58,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:58,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:58,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:25:58,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash 900247765, now seen corresponding path program 1 times [2020-09-25 04:25:58,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:58,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913024862] [2020-09-25 04:25:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking...